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raspberrypi-kernel
提交 807f4f8c 编写于 作者: L Linus Torvalds
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Merge branch 'x86-core-v2-for-linus' of... 

Merge branch 'x86-core-v2-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

This merges in:

  x86/build, x86/microcode, x86/spinlocks, x86/memory-corruption-check,
  x86/early-printk, x86/xsave, x86/quirks, x86/setup, x86/signal,
  core/signal, x86/urgent, x86/xen

* 'x86-core-v2-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (142 commits)
  x86: make processor type select depend on CONFIG_EMBEDDED
  x86: extend processor type select help text
  x86, amd-iommu: propagate PCI device enabling error
  warnings: fix arch/x86/kernel/io_apic_64.c
  warnings: fix arch/x86/kernel/early_printk.c
  x86, fpu: check __clear_user() return value
  x86: memory corruption check - cleanup
  x86: ioperm user_regset
  xen: do not reserve 2 pages of padding between hypervisor and fixmap.
  xen: use spin_lock_nest_lock when pinning a pagetable
  x86: xsave: set FP, SSE bits in the xsave header in the user sigcontext
  x86: xsave: fix error condition in save_i387_xstate()
  x86: SB450: deprioritize DMI quirks
  x86: SB450: skip IRQ0 override if it is not routed to INT2 of IOAPIC
  x86: replace a magic number with a named constant in the VESA boot code
  x86 setup: remove IMAGE_OFFSET
  x86 setup: remove DEF_INITSEG and DEF_SETUPSEG
  Revert "x86: fix ghost EDD devices in /sys again"
  x86 setup: fix ghost entries under /sys/firmware/edd take 3
  x86: signal: remove indent in restore_sigcontext()
  ...
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Documentation/kernel-parameters.txt
浏览文件 @ 807f4f8c
......@@ -658,11 +658,12 @@ and is between 256 and 4096 characters. It is defined in the file
earlyprintk= [X86-32,X86-64,SH,BLACKFIN]
earlyprintk=vga
earlyprintk=serial[,ttySn[,baudrate]]
earlyprintk=dbgp
Append ",keep" to not disable it when the real console
takes over.
Only vga or serial at a time, not both.
Only vga or serial or usb debug port at a time.
Currently only ttyS0 and ttyS1 are supported.
......@@ -1231,6 +1232,29 @@ and is between 256 and 4096 characters. It is defined in the file
or
memmap=0x10000$0x18690000
memory_corruption_check=0/1 [X86]
Some BIOSes seem to corrupt the first 64k of
memory when doing things like suspend/resume.
Setting this option will scan the memory
looking for corruption. Enabling this will
both detect corruption and prevent the kernel
from using the memory being corrupted.
However, its intended as a diagnostic tool; if
repeatable BIOS-originated corruption always
affects the same memory, you can use memmap=
to prevent the kernel from using that memory.
memory_corruption_check_size=size [X86]
By default it checks for corruption in the low
64k, making this memory unavailable for normal
use. Use this parameter to scan for
corruption in more or less memory.
memory_corruption_check_period=seconds [X86]
By default it checks for corruption every 60
seconds. Use this parameter to check at some
other rate. 0 disables periodic checking.
memtest= [KNL,X86] Enable memtest
Format: <integer>
range: 0,4 : pattern number
......
MAINTAINERS
浏览文件 @ 807f4f8c
......@@ -390,6 +390,11 @@ L: iommu@lists.linux-foundation.org
T: git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux-2.6-iommu.git
S: Supported
AMD MICROCODE UPDATE SUPPORT
P: Peter Oruba
M: peter.oruba@amd.com
S: Supported
AMS (Apple Motion Sensor) DRIVER
P: Stelian Pop
M: stelian@popies.net
......
arch/ia64/include/asm/siginfo.h
浏览文件 @ 807f4f8c
......@@ -113,11 +113,6 @@ typedef struct siginfo {
#undef NSIGSEGV
#define NSIGSEGV 3
/*
* SIGTRAP si_codes
*/
#define TRAP_BRANCH (__SI_FAULT|3) /* process taken branch trap */
#define TRAP_HWBKPT (__SI_FAULT|4) /* hardware breakpoint or watchpoint */
#undef NSIGTRAP
#define NSIGTRAP 4
......
arch/powerpc/include/asm/siginfo.h
浏览文件 @ 807f4f8c
......@@ -15,11 +15,6 @@
#include <asm-generic/siginfo.h>
/*
* SIGTRAP si_codes
*/
#define TRAP_BRANCH (__SI_FAULT|3) /* process taken branch trap */
#define TRAP_HWBKPT (__SI_FAULT|4) /* hardware breakpoint or watchpoint */
#undef NSIGTRAP
#define NSIGTRAP 4
......
arch/x86/Kconfig
浏览文件 @ 807f4f8c
......@@ -778,23 +778,45 @@ config X86_REBOOTFIXUPS
Say N otherwise.
config MICROCODE
tristate "/dev/cpu/microcode - Intel IA32 CPU microcode support"
tristate "/dev/cpu/microcode - microcode support"
select FW_LOADER
---help---
If you say Y here, you will be able to update the microcode on
Intel processors in the IA32 family, e.g. Pentium Pro, Pentium II,
Pentium III, Pentium 4, Xeon etc. You will obviously need the
actual microcode binary data itself which is not shipped with the
Linux kernel.
certain Intel and AMD processors. The Intel support is for the
IA32 family, e.g. Pentium Pro, Pentium II, Pentium III,
Pentium 4, Xeon etc. The AMD support is for family 0x10 and
0x11 processors, e.g. Opteron, Phenom and Turion 64 Ultra.
You will obviously need the actual microcode binary data itself
which is not shipped with the Linux kernel.
For latest news and information on obtaining all the required
ingredients for this driver, check:
<http://www.urbanmyth.org/microcode/>.
This option selects the general module only, you need to select
at least one vendor specific module as well.
To compile this driver as a module, choose M here: the
module will be called microcode.
config MICROCODE_OLD_INTERFACE
config MICROCODE_INTEL
bool "Intel microcode patch loading support"
depends on MICROCODE
default MICROCODE
select FW_LOADER
--help---
This options enables microcode patch loading support for Intel
processors.
For latest news and information on obtaining all the required
Intel ingredients for this driver, check:
<http://www.urbanmyth.org/microcode/>.
config MICROCODE_AMD
bool "AMD microcode patch loading support"
depends on MICROCODE
select FW_LOADER
--help---
If you select this option, microcode patch loading support for AMD
processors will be enabled.
config MICROCODE_OLD_INTERFACE
def_bool y
depends on MICROCODE
......@@ -1061,6 +1083,56 @@ config HIGHPTE
low memory. Setting this option will put user-space page table
entries in high memory.
config X86_CHECK_BIOS_CORRUPTION
bool "Check for low memory corruption"
help
Periodically check for memory corruption in low memory, which
is suspected to be caused by BIOS. Even when enabled in the
configuration, it is disabled at runtime. Enable it by
setting "memory_corruption_check=1" on the kernel command
line. By default it scans the low 64k of memory every 60
seconds; see the memory_corruption_check_size and
memory_corruption_check_period parameters in
Documentation/kernel-parameters.txt to adjust this.
When enabled with the default parameters, this option has
almost no overhead, as it reserves a relatively small amount
of memory and scans it infrequently. It both detects corruption
and prevents it from affecting the running system.
It is, however, intended as a diagnostic tool; if repeatable
BIOS-originated corruption always affects the same memory,
you can use memmap= to prevent the kernel from using that
memory.
config X86_BOOTPARAM_MEMORY_CORRUPTION_CHECK
bool "Set the default setting of memory_corruption_check"
depends on X86_CHECK_BIOS_CORRUPTION
default y
help
Set whether the default state of memory_corruption_check is
on or off.
config X86_RESERVE_LOW_64K
bool "Reserve low 64K of RAM on AMI/Phoenix BIOSen"
default y
help
Reserve the first 64K of physical RAM on BIOSes that are known
to potentially corrupt that memory range. A numbers of BIOSes are
known to utilize this area during suspend/resume, so it must not
be used by the kernel.
Set this to N if you are absolutely sure that you trust the BIOS
to get all its memory reservations and usages right.
If you have doubts about the BIOS (e.g. suspend/resume does not
work or there's kernel crashes after certain hardware hotplug
events) and it's not AMI or Phoenix, then you might want to enable
X86_CHECK_BIOS_CORRUPTION=y to allow the kernel to check typical
corruption patterns.
Say Y if unsure.
config MATH_EMULATION
bool
prompt "Math emulation" if X86_32
......
arch/x86/Kconfig.cpu
浏览文件 @ 807f4f8c
......@@ -420,7 +420,6 @@ config X86_DEBUGCTLMSR
depends on !(MK6 || MWINCHIPC6 || MWINCHIP2 || MWINCHIP3D || MCYRIXIII || M586MMX || M586TSC || M586 || M486 || M386)
menuconfig PROCESSOR_SELECT
default y
bool "Supported processor vendors" if EMBEDDED
help
This lets you choose what x86 vendor support code your kernel
......@@ -430,48 +429,97 @@ config CPU_SUP_INTEL
default y
bool "Support Intel processors" if PROCESSOR_SELECT
help
This enables extended support for Intel processors
This enables detection, tunings and quirks for Intel processors
You need this enabled if you want your kernel to run on an
Intel CPU. Disabling this option on other types of CPUs
makes the kernel a tiny bit smaller. Disabling it on an Intel
CPU might render the kernel unbootable.
If unsure, say N.
config CPU_SUP_CYRIX_32
default y
bool "Support Cyrix processors" if PROCESSOR_SELECT
depends on !64BIT
help
This enables extended support for Cyrix processors
This enables detection, tunings and quirks for Cyrix processors
You need this enabled if you want your kernel to run on a
Cyrix CPU. Disabling this option on other types of CPUs
makes the kernel a tiny bit smaller. Disabling it on a Cyrix
CPU might render the kernel unbootable.
If unsure, say N.
config CPU_SUP_AMD
default y
bool "Support AMD processors" if PROCESSOR_SELECT
help
This enables extended support for AMD processors
This enables detection, tunings and quirks for AMD processors
You need this enabled if you want your kernel to run on an
AMD CPU. Disabling this option on other types of CPUs
makes the kernel a tiny bit smaller. Disabling it on an AMD
CPU might render the kernel unbootable.
If unsure, say N.
config CPU_SUP_CENTAUR_32
default y
bool "Support Centaur processors" if PROCESSOR_SELECT
depends on !64BIT
help
This enables extended support for Centaur processors
This enables detection, tunings and quirks for Centaur processors
You need this enabled if you want your kernel to run on a
Centaur CPU. Disabling this option on other types of CPUs
makes the kernel a tiny bit smaller. Disabling it on a Centaur
CPU might render the kernel unbootable.
If unsure, say N.
config CPU_SUP_CENTAUR_64
default y
bool "Support Centaur processors" if PROCESSOR_SELECT
depends on 64BIT
help
This enables extended support for Centaur processors
This enables detection, tunings and quirks for Centaur processors
You need this enabled if you want your kernel to run on a
Centaur CPU. Disabling this option on other types of CPUs
makes the kernel a tiny bit smaller. Disabling it on a Centaur
CPU might render the kernel unbootable.
If unsure, say N.
config CPU_SUP_TRANSMETA_32
default y
bool "Support Transmeta processors" if PROCESSOR_SELECT
depends on !64BIT
help
This enables extended support for Transmeta processors
This enables detection, tunings and quirks for Transmeta processors
You need this enabled if you want your kernel to run on a
Transmeta CPU. Disabling this option on other types of CPUs
makes the kernel a tiny bit smaller. Disabling it on a Transmeta
CPU might render the kernel unbootable.
If unsure, say N.
config CPU_SUP_UMC_32
default y
bool "Support UMC processors" if PROCESSOR_SELECT
depends on !64BIT
help
This enables extended support for UMC processors
This enables detection, tunings and quirks for UMC processors
You need this enabled if you want your kernel to run on a
UMC CPU. Disabling this option on other types of CPUs
makes the kernel a tiny bit smaller. Disabling it on a UMC
CPU might render the kernel unbootable.
If unsure, say N.
config X86_DS
bool "Debug Store support"
......
arch/x86/Kconfig.debug
浏览文件 @ 807f4f8c
......@@ -43,6 +43,19 @@ config EARLY_PRINTK
with klogd/syslogd or the X server. You should normally N here,
unless you want to debug such a crash.
config EARLY_PRINTK_DBGP
bool "Early printk via EHCI debug port"
default n
depends on EARLY_PRINTK && PCI
help
Write kernel log output directly into the EHCI debug port.
This is useful for kernel debugging when your machine crashes very
early before the console code is initialized. For normal operation
it is not recommended because it looks ugly and doesn't cooperate
with klogd/syslogd or the X server. You should normally N here,
unless you want to debug such a crash. You need usb debug device.
config DEBUG_STACKOVERFLOW
bool "Check for stack overflows"
depends on DEBUG_KERNEL
......
arch/x86/Makefile_32.cpu
浏览文件 @ 807f4f8c
......@@ -45,3 +45,8 @@ cflags-$(CONFIG_MGEODEGX1) += -march=pentium-mmx
# cpu entries
cflags-$(CONFIG_X86_GENERIC) += $(call tune,generic,$(call tune,i686))
# Bug fix for binutils: this option is required in order to keep
# binutils from generating NOPL instructions against our will.
ifneq ($(CONFIG_X86_P6_NOP),y)
cflags-y += $(call cc-option,-Wa$(comma)-mtune=generic32,)
endif
arch/x86/boot/Makefile
浏览文件 @ 807f4f8c
......@@ -72,9 +72,7 @@ KBUILD_CFLAGS := $(LINUXINCLUDE) -g -Os -D_SETUP -D__KERNEL__ \
KBUILD_CFLAGS += $(call cc-option,-m32)
KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__
$(obj)/zImage: IMAGE_OFFSET := 0x1000
$(obj)/zImage: asflags-y := $(SVGA_MODE) $(RAMDISK)
$(obj)/bzImage: IMAGE_OFFSET := 0x100000
$(obj)/bzImage: ccflags-y := -D__BIG_KERNEL__
$(obj)/bzImage: asflags-y := $(SVGA_MODE) $(RAMDISK) -D__BIG_KERNEL__
$(obj)/bzImage: BUILDFLAGS := -b
......@@ -117,7 +115,7 @@ $(obj)/setup.bin: $(obj)/setup.elf FORCE
$(call if_changed,objcopy)
$(obj)/compressed/vmlinux: FORCE
$(Q)$(MAKE) $(build)=$(obj)/compressed IMAGE_OFFSET=$(IMAGE_OFFSET) $@
$(Q)$(MAKE) $(build)=$(obj)/compressed $@
# Set this if you want to pass append arguments to the zdisk/fdimage/isoimage kernel
FDARGS =
......@@ -181,6 +179,7 @@ isoimage: $(BOOTIMAGE)
mkisofs -J -r -o $(obj)/image.iso -b isolinux.bin -c boot.cat \
-no-emul-boot -boot-load-size 4 -boot-info-table \
$(obj)/isoimage
isohybrid $(obj)/image.iso 2>/dev/null || true
rm -rf $(obj)/isoimage
zlilo: $(BOOTIMAGE)
......
arch/x86/boot/compressed/Makefile
浏览文件 @ 807f4f8c
......@@ -27,9 +27,8 @@ $(obj)/vmlinux.bin: vmlinux FORCE
$(call if_changed,objcopy)
ifeq ($(CONFIG_X86_32),y)
targets += vmlinux.bin.all vmlinux.relocs
hostprogs-y := relocs
targets += vmlinux.bin.all vmlinux.relocs relocs
hostprogs-$(CONFIG_X86_32) += relocs
quiet_cmd_relocs = RELOCS $@
cmd_relocs = $(obj)/relocs $< > $@;$(obj)/relocs --abs-relocs $<
......@@ -43,6 +42,8 @@ quiet_cmd_relocbin = BUILD $@
$(obj)/vmlinux.bin.all: $(vmlinux.bin.all-y) FORCE
$(call if_changed,relocbin)
ifeq ($(CONFIG_X86_32),y)
ifdef CONFIG_RELOCATABLE
$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin.all FORCE
$(call if_changed,gzip)
......@@ -59,6 +60,5 @@ $(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
LDFLAGS_piggy.o := -r --format binary --oformat elf64-x86-64 -T
endif
$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.gz FORCE
$(call if_changed,ld)
arch/x86/boot/edd.c
浏览文件 @ 807f4f8c
......@@ -41,6 +41,7 @@ static u32 read_mbr_sig(u8 devno, struct edd_info *ei, u32 *mbrsig)
char *mbrbuf_ptr, *mbrbuf_end;
u32 buf_base, mbr_base;
extern char _end[];
u16 mbr_magic;
sector_size = ei->params.bytes_per_sector;
if (!sector_size)
......@@ -58,11 +59,15 @@ static u32 read_mbr_sig(u8 devno, struct edd_info *ei, u32 *mbrsig)
if (mbrbuf_end > (char *)(size_t)boot_params.hdr.heap_end_ptr)
return -1;
memset(mbrbuf_ptr, 0, sector_size);
if (read_mbr(devno, mbrbuf_ptr))
return -1;
*mbrsig = *(u32 *)&mbrbuf_ptr[EDD_MBR_SIG_OFFSET];
return 0;
mbr_magic = *(u16 *)&mbrbuf_ptr[510];
/* check for valid MBR magic */
return mbr_magic == 0xAA55 ? 0 : -1;
}
static int get_edd_info(u8 devno, struct edd_info *ei)
......
arch/x86/boot/video-vesa.c
浏览文件 @ 807f4f8c
......@@ -224,7 +224,7 @@ static void vesa_store_pm_info(void)
static void vesa_store_mode_params_graphics(void)
{
/* Tell the kernel we're in VESA graphics mode */
boot_params.screen_info.orig_video_isVGA = 0x23;
boot_params.screen_info.orig_video_isVGA = VIDEO_TYPE_VLFB;
/* Mode parameters */
boot_params.screen_info.vesa_attributes = vminfo.mode_attr;
......
arch/x86/configs/i386_defconfig
浏览文件 @ 807f4f8c
......@@ -1535,7 +1535,6 @@ CONFIG_BACKLIGHT_CLASS_DEVICE=y
CONFIG_VGA_CONSOLE=y
CONFIG_VGACON_SOFT_SCROLLBACK=y
CONFIG_VGACON_SOFT_SCROLLBACK_SIZE=64
CONFIG_VIDEO_SELECT=y
CONFIG_DUMMY_CONSOLE=y
# CONFIG_FRAMEBUFFER_CONSOLE is not set
CONFIG_LOGO=y
......
arch/x86/configs/x86_64_defconfig
浏览文件 @ 807f4f8c
......@@ -1505,7 +1505,6 @@ CONFIG_BACKLIGHT_CLASS_DEVICE=y
CONFIG_VGA_CONSOLE=y
CONFIG_VGACON_SOFT_SCROLLBACK=y
CONFIG_VGACON_SOFT_SCROLLBACK_SIZE=64
CONFIG_VIDEO_SELECT=y
CONFIG_DUMMY_CONSOLE=y
# CONFIG_FRAMEBUFFER_CONSOLE is not set
CONFIG_LOGO=y
......
arch/x86/ia32/ia32_signal.c
浏览文件 @ 807f4f8c
......@@ -351,31 +351,28 @@ static int ia32_setup_sigcontext(struct sigcontext_ia32 __user *sc,
savesegment(es, tmp);
err |= __put_user(tmp, (unsigned int __user *)&sc->es);
err |= __put_user((u32)regs->di, &sc->di);
err |= __put_user((u32)regs->si, &sc->si);
err |= __put_user((u32)regs->bp, &sc->bp);
err |= __put_user((u32)regs->sp, &sc->sp);
err |= __put_user((u32)regs->bx, &sc->bx);
err |= __put_user((u32)regs->dx, &sc->dx);
err |= __put_user((u32)regs->cx, &sc->cx);
err |= __put_user((u32)regs->ax, &sc->ax);
err |= __put_user((u32)regs->cs, &sc->cs);
err |= __put_user((u32)regs->ss, &sc->ss);
err |= __put_user(regs->di, &sc->di);
err |= __put_user(regs->si, &sc->si);
err |= __put_user(regs->bp, &sc->bp);
err |= __put_user(regs->sp, &sc->sp);
err |= __put_user(regs->bx, &sc->bx);
err |= __put_user(regs->dx, &sc->dx);
err |= __put_user(regs->cx, &sc->cx);
err |= __put_user(regs->ax, &sc->ax);
err |= __put_user(regs->cs, &sc->cs);
err |= __put_user(regs->ss, &sc->ss);
err |= __put_user(current->thread.trap_no, &sc->trapno);
err |= __put_user(current->thread.error_code, &sc->err);
err |= __put_user((u32)regs->ip, &sc->ip);
err |= __put_user((u32)regs->flags, &sc->flags);
err |= __put_user((u32)regs->sp, &sc->sp_at_signal);
err |= __put_user(regs->ip, &sc->ip);
err |= __put_user(regs->flags, &sc->flags);
err |= __put_user(regs->sp, &sc->sp_at_signal);
tmp = save_i387_xstate_ia32(fpstate);
if (tmp < 0)
err = -EFAULT;
else {
clear_used_math();
stts();
else
err |= __put_user(ptr_to_compat(tmp ? fpstate : NULL),
&sc->fpstate);
}
/* non-iBCS2 extensions.. */
err |= __put_user(mask, &sc->oldmask);
......@@ -444,21 +441,18 @@ int ia32_setup_frame(int sig, struct k_sigaction *ka,
frame = get_sigframe(ka, regs, sizeof(*frame), &fpstate);
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
goto give_sigsegv;
return -EFAULT;
err |= __put_user(sig, &frame->sig);
if (err)
goto give_sigsegv;
if (__put_user(sig, &frame->sig))
return -EFAULT;
err |= ia32_setup_sigcontext(&frame->sc, fpstate, regs, set->sig[0]);
if (err)
goto give_sigsegv;
if (ia32_setup_sigcontext(&frame->sc, fpstate, regs, set->sig[0]))
return -EFAULT;
if (_COMPAT_NSIG_WORDS > 1) {
err |= __copy_to_user(frame->extramask, &set->sig[1],
sizeof(frame->extramask));
if (err)
goto give_sigsegv;
if (__copy_to_user(frame->extramask, &set->sig[1],
sizeof(frame->extramask)))
return -EFAULT;
}
if (ka->sa.sa_flags & SA_RESTORER) {
......@@ -479,7 +473,7 @@ int ia32_setup_frame(int sig, struct k_sigaction *ka,
*/
err |= __copy_to_user(frame->retcode, &code, 8);
if (err)
goto give_sigsegv;
return -EFAULT;
/* Set up registers for signal handler */
regs->sp = (unsigned long) frame;
......@@ -502,10 +496,6 @@ int ia32_setup_frame(int sig, struct k_sigaction *ka,
#endif
return 0;
give_sigsegv:
force_sigsegv(sig, current);
return -EFAULT;
}
int ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
......@@ -533,14 +523,14 @@ int ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
frame = get_sigframe(ka, regs, sizeof(*frame), &fpstate);
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
goto give_sigsegv;
return -EFAULT;
err |= __put_user(sig, &frame->sig);
err |= __put_user(ptr_to_compat(&frame->info), &frame->pinfo);
err |= __put_user(ptr_to_compat(&frame->uc), &frame->puc);
err |= copy_siginfo_to_user32(&frame->info, info);
if (err)
goto give_sigsegv;
return -EFAULT;
/* Create the ucontext. */
if (cpu_has_xsave)
......@@ -556,7 +546,7 @@ int ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
regs, set->sig[0]);
err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
if (err)
goto give_sigsegv;
return -EFAULT;
if (ka->sa.sa_flags & SA_RESTORER)
restorer = ka->sa.sa_restorer;
......@@ -571,7 +561,7 @@ int ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
*/
err |= __copy_to_user(frame->retcode, &code, 8);
if (err)
goto give_sigsegv;
return -EFAULT;
/* Set up registers for signal handler */
regs->sp = (unsigned long) frame;
......@@ -599,8 +589,4 @@ int ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
#endif
return 0;
give_sigsegv:
force_sigsegv(sig, current);
return -EFAULT;
}
arch/x86/kernel/Makefile
浏览文件 @ 807f4f8c
......@@ -10,7 +10,7 @@ ifdef CONFIG_FTRACE
# Do not profile debug and lowlevel utilities
CFLAGS_REMOVE_tsc.o = -pg
CFLAGS_REMOVE_rtc.o = -pg
CFLAGS_REMOVE_paravirt.o = -pg
CFLAGS_REMOVE_paravirt-spinlocks.o = -pg
endif
#
......@@ -51,7 +51,6 @@ obj-$(CONFIG_X86_BIOS_REBOOT) += reboot.o
obj-$(CONFIG_MCA) += mca_32.o
obj-$(CONFIG_X86_MSR) += msr.o
obj-$(CONFIG_X86_CPUID) += cpuid.o
obj-$(CONFIG_MICROCODE) += microcode.o
obj-$(CONFIG_PCI) += early-quirks.o
apm-y := apm_32.o
obj-$(CONFIG_APM) += apm.o
......@@ -90,7 +89,7 @@ obj-$(CONFIG_DEBUG_NX_TEST) += test_nx.o
obj-$(CONFIG_VMI) += vmi_32.o vmiclock_32.o
obj-$(CONFIG_KVM_GUEST) += kvm.o
obj-$(CONFIG_KVM_CLOCK) += kvmclock.o
obj-$(CONFIG_PARAVIRT) += paravirt.o paravirt_patch_$(BITS).o
obj-$(CONFIG_PARAVIRT) += paravirt.o paravirt_patch_$(BITS).o paravirt-spinlocks.o
obj-$(CONFIG_PARAVIRT_CLOCK) += pvclock.o
obj-$(CONFIG_PCSPKR_PLATFORM) += pcspeaker.o
......@@ -100,6 +99,11 @@ scx200-y += scx200_32.o
obj-$(CONFIG_OLPC) += olpc.o
microcode-y := microcode_core.o
microcode-$(CONFIG_MICROCODE_INTEL) += microcode_intel.o
microcode-$(CONFIG_MICROCODE_AMD) += microcode_amd.o
obj-$(CONFIG_MICROCODE) += microcode.o
###
# 64 bit specific files
ifeq ($(CONFIG_X86_64),y)
......
arch/x86/kernel/acpi/boot.c
浏览文件 @ 807f4f8c
......@@ -1418,8 +1418,16 @@ static int __init force_acpi_ht(const struct dmi_system_id *d)
*/
static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d)
{
pr_notice("%s detected: Ignoring BIOS IRQ0 pin2 override\n", d->ident);
acpi_skip_timer_override = 1;
/*
* The ati_ixp4x0_rev() early PCI quirk should have set
* the acpi_skip_timer_override flag already:
*/
if (!acpi_skip_timer_override) {
WARN(1, KERN_ERR "ati_ixp4x0 quirk not complete.\n");
pr_notice("%s detected: Ignoring BIOS IRQ0 pin2 override\n",
d->ident);
acpi_skip_timer_override = 1;
}
return 0;
}
......
arch/x86/kernel/amd_iommu_init.c
浏览文件 @ 807f4f8c
......@@ -723,9 +723,7 @@ static int __init init_iommu_one(struct amd_iommu *iommu, struct ivhd_header *h)
init_iommu_from_acpi(iommu, h);
init_iommu_devices(iommu);
pci_enable_device(iommu->dev);
return 0;
return pci_enable_device(iommu->dev);
}
/*
......
arch/x86/kernel/cpu/common.c
浏览文件 @ 807f4f8c
......@@ -1121,16 +1121,5 @@ void __cpuinit cpu_init(void)
xsave_init();
}
#ifdef CONFIG_HOTPLUG_CPU
void __cpuinit cpu_uninit(void)
{
int cpu = raw_smp_processor_id();
cpu_clear(cpu, cpu_initialized);
/* lazy TLB state */
per_cpu(cpu_tlbstate, cpu).state = 0;
per_cpu(cpu_tlbstate, cpu).active_mm = &init_mm;
}
#endif
#endif
arch/x86/kernel/doublefault_32.c
浏览文件 @ 807f4f8c
......@@ -66,6 +66,6 @@ struct tss_struct doublefault_tss __cacheline_aligned = {
.ds = __USER_DS,
.fs = __KERNEL_PERCPU,
.__cr3 = __pa(swapper_pg_dir)
.__cr3 = __phys_addr_const((unsigned long)swapper_pg_dir)
}
};
arch/x86/kernel/early-quirks.c
浏览文件 @ 807f4f8c
......@@ -95,6 +95,52 @@ static void __init nvidia_bugs(int num, int slot, int func)
}
static u32 ati_ixp4x0_rev(int num, int slot, int func)
{
u32 d;
u8 b;
b = read_pci_config_byte(num, slot, func, 0xac);
b &= ~(1<<5);
write_pci_config_byte(num, slot, func, 0xac, b);
d = read_pci_config(num, slot, func, 0x70);
d |= 1<<8;
write_pci_config(num, slot, func, 0x70, d);
d = read_pci_config(num, slot, func, 0x8);
d &= 0xff;
return d;
}
static void __init ati_bugs(int num, int slot, int func)
{
#if defined(CONFIG_ACPI) && defined (CONFIG_X86_IO_APIC)
u32 d;
u8 b;
if (acpi_use_timer_override)
return;
d = ati_ixp4x0_rev(num, slot, func);
if (d < 0x82)
acpi_skip_timer_override = 1;
else {
/* check for IRQ0 interrupt swap */
outb(0x72, 0xcd6); b = inb(0xcd7);
if (!(b & 0x2))
acpi_skip_timer_override = 1;
}
if (acpi_skip_timer_override) {
printk(KERN_INFO "SB4X0 revision 0x%x\n", d);
printk(KERN_INFO "Ignoring ACPI timer override.\n");
printk(KERN_INFO "If you got timer trouble "
"try acpi_use_timer_override\n");
}
#endif
}
#ifdef CONFIG_DMAR
static void __init intel_g33_dmar(int num, int slot, int func)
{
......@@ -128,6 +174,8 @@ static struct chipset early_qrk[] __initdata = {
PCI_CLASS_BRIDGE_PCI, PCI_ANY_ID, QFLAG_APPLY_ONCE, via_bugs },
{ PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_K8_NB,
PCI_CLASS_BRIDGE_HOST, PCI_ANY_ID, 0, fix_hypertransport_config },
{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP400_SMBUS,
PCI_CLASS_SERIAL_SMBUS, PCI_ANY_ID, 0, ati_bugs },
#ifdef CONFIG_DMAR
{ PCI_VENDOR_ID_INTEL, 0x29c0,
PCI_CLASS_BRIDGE_HOST, PCI_ANY_ID, 0, intel_g33_dmar },
......
arch/x86/kernel/early_printk.c
浏览文件 @ 807f4f8c
......@@ -3,11 +3,19 @@
#include <linux/init.h>
#include <linux/string.h>
#include <linux/screen_info.h>
#include <linux/usb/ch9.h>
#include <linux/pci_regs.h>
#include <linux/pci_ids.h>
#include <linux/errno.h>
#include <asm/io.h>
#include <asm/processor.h>
#include <asm/fcntl.h>
#include <asm/setup.h>
#include <xen/hvc-console.h>
#include <asm/pci-direct.h>
#include <asm/pgtable.h>
#include <asm/fixmap.h>
#include <linux/usb/ehci_def.h>
/* Simple VGA output */
#define VGABASE (__ISA_IO_base + 0xb8000)
......@@ -78,6 +86,7 @@ static int early_serial_base = 0x3f8; /* ttyS0 */
static int early_serial_putc(unsigned char ch)
{
unsigned timeout = 0xffff;
while ((inb(early_serial_base + LSR) & XMTRDY) == 0 && --timeout)
cpu_relax();
outb(ch, early_serial_base + TXR);
......@@ -111,7 +120,7 @@ static __init void early_serial_init(char *s)
if (!strncmp(s, "0x", 2)) {
early_serial_base = simple_strtoul(s, &e, 16);
} else {
static int bases[] = { 0x3f8, 0x2f8 };
static const int __initconst bases[] = { 0x3f8, 0x2f8 };
if (!strncmp(s, "ttyS", 4))
s += 4;
......@@ -151,6 +160,721 @@ static struct console early_serial_console = {
.index = -1,
};
#ifdef CONFIG_EARLY_PRINTK_DBGP
static struct ehci_caps __iomem *ehci_caps;
static struct ehci_regs __iomem *ehci_regs;
static struct ehci_dbg_port __iomem *ehci_debug;
static unsigned int dbgp_endpoint_out;
struct ehci_dev {
u32 bus;
u32 slot;
u32 func;
};
static struct ehci_dev ehci_dev;
#define USB_DEBUG_DEVNUM 127
#define DBGP_DATA_TOGGLE 0x8800
static inline u32 dbgp_pid_update(u32 x, u32 tok)
{
return ((x ^ DBGP_DATA_TOGGLE) & 0xffff00) | (tok & 0xff);
}
static inline u32 dbgp_len_update(u32 x, u32 len)
{
return (x & ~0x0f) | (len & 0x0f);
}
/*
* USB Packet IDs (PIDs)
*/
/* token */
#define USB_PID_OUT 0xe1
#define USB_PID_IN 0x69
#define USB_PID_SOF 0xa5
#define USB_PID_SETUP 0x2d
/* handshake */
#define USB_PID_ACK 0xd2
#define USB_PID_NAK 0x5a
#define USB_PID_STALL 0x1e
#define USB_PID_NYET 0x96
/* data */
#define USB_PID_DATA0 0xc3
#define USB_PID_DATA1 0x4b
#define USB_PID_DATA2 0x87
#define USB_PID_MDATA 0x0f
/* Special */
#define USB_PID_PREAMBLE 0x3c
#define USB_PID_ERR 0x3c
#define USB_PID_SPLIT 0x78
#define USB_PID_PING 0xb4
#define USB_PID_UNDEF_0 0xf0
#define USB_PID_DATA_TOGGLE 0x88
#define DBGP_CLAIM (DBGP_OWNER | DBGP_ENABLED | DBGP_INUSE)
#define PCI_CAP_ID_EHCI_DEBUG 0xa
#define HUB_ROOT_RESET_TIME 50 /* times are in msec */
#define HUB_SHORT_RESET_TIME 10
#define HUB_LONG_RESET_TIME 200
#define HUB_RESET_TIMEOUT 500
#define DBGP_MAX_PACKET 8
static int dbgp_wait_until_complete(void)
{
u32 ctrl;
int loop = 0x100000;
do {
ctrl = readl(&ehci_debug->control);
/* Stop when the transaction is finished */
if (ctrl & DBGP_DONE)
break;
} while (--loop > 0);
if (!loop)
return -1;
/*
* Now that we have observed the completed transaction,
* clear the done bit.
*/
writel(ctrl | DBGP_DONE, &ehci_debug->control);
return (ctrl & DBGP_ERROR) ? -DBGP_ERRCODE(ctrl) : DBGP_LEN(ctrl);
}
static void dbgp_mdelay(int ms)
{
int i;
while (ms--) {
for (i = 0; i < 1000; i++)
outb(0x1, 0x80);
}
}
static void dbgp_breath(void)
{
/* Sleep to give the debug port a chance to breathe */
}
static int dbgp_wait_until_done(unsigned ctrl)
{
u32 pids, lpid;
int ret;
int loop = 3;
retry:
writel(ctrl | DBGP_GO, &ehci_debug->control);
ret = dbgp_wait_until_complete();
pids = readl(&ehci_debug->pids);
lpid = DBGP_PID_GET(pids);
if (ret < 0)
return ret;
/*
* If the port is getting full or it has dropped data
* start pacing ourselves, not necessary but it's friendly.
*/
if ((lpid == USB_PID_NAK) || (lpid == USB_PID_NYET))
dbgp_breath();
/* If I get a NACK reissue the transmission */
if (lpid == USB_PID_NAK) {
if (--loop > 0)
goto retry;
}
return ret;
}
static void dbgp_set_data(const void *buf, int size)
{
const unsigned char *bytes = buf;
u32 lo, hi;
int i;
lo = hi = 0;
for (i = 0; i < 4 && i < size; i++)
lo |= bytes[i] << (8*i);
for (; i < 8 && i < size; i++)
hi |= bytes[i] << (8*(i - 4));
writel(lo, &ehci_debug->data03);
writel(hi, &ehci_debug->data47);
}
static void dbgp_get_data(void *buf, int size)
{
unsigned char *bytes = buf;
u32 lo, hi;
int i;
lo = readl(&ehci_debug->data03);
hi = readl(&ehci_debug->data47);
for (i = 0; i < 4 && i < size; i++)
bytes[i] = (lo >> (8*i)) & 0xff;
for (; i < 8 && i < size; i++)
bytes[i] = (hi >> (8*(i - 4))) & 0xff;
}
static int dbgp_bulk_write(unsigned devnum, unsigned endpoint,
const char *bytes, int size)
{
u32 pids, addr, ctrl;
int ret;
if (size > DBGP_MAX_PACKET)
return -1;
addr = DBGP_EPADDR(devnum, endpoint);
pids = readl(&ehci_debug->pids);
pids = dbgp_pid_update(pids, USB_PID_OUT);
ctrl = readl(&ehci_debug->control);
ctrl = dbgp_len_update(ctrl, size);
ctrl |= DBGP_OUT;
ctrl |= DBGP_GO;
dbgp_set_data(bytes, size);
writel(addr, &ehci_debug->address);
writel(pids, &ehci_debug->pids);
ret = dbgp_wait_until_done(ctrl);
if (ret < 0)
return ret;
return ret;
}
static int dbgp_bulk_read(unsigned devnum, unsigned endpoint, void *data,
int size)
{
u32 pids, addr, ctrl;
int ret;
if (size > DBGP_MAX_PACKET)
return -1;
addr = DBGP_EPADDR(devnum, endpoint);
pids = readl(&ehci_debug->pids);
pids = dbgp_pid_update(pids, USB_PID_IN);
ctrl = readl(&ehci_debug->control);
ctrl = dbgp_len_update(ctrl, size);
ctrl &= ~DBGP_OUT;
ctrl |= DBGP_GO;
writel(addr, &ehci_debug->address);
writel(pids, &ehci_debug->pids);
ret = dbgp_wait_until_done(ctrl);
if (ret < 0)
return ret;
if (size > ret)
size = ret;
dbgp_get_data(data, size);
return ret;
}
static int dbgp_control_msg(unsigned devnum, int requesttype, int request,
int value, int index, void *data, int size)
{
u32 pids, addr, ctrl;
struct usb_ctrlrequest req;
int read;
int ret;
read = (requesttype & USB_DIR_IN) != 0;
if (size > (read ? DBGP_MAX_PACKET:0))
return -1;
/* Compute the control message */
req.bRequestType = requesttype;
req.bRequest = request;
req.wValue = cpu_to_le16(value);
req.wIndex = cpu_to_le16(index);
req.wLength = cpu_to_le16(size);
pids = DBGP_PID_SET(USB_PID_DATA0, USB_PID_SETUP);
addr = DBGP_EPADDR(devnum, 0);
ctrl = readl(&ehci_debug->control);
ctrl = dbgp_len_update(ctrl, sizeof(req));
ctrl |= DBGP_OUT;
ctrl |= DBGP_GO;
/* Send the setup message */
dbgp_set_data(&req, sizeof(req));
writel(addr, &ehci_debug->address);
writel(pids, &ehci_debug->pids);
ret = dbgp_wait_until_done(ctrl);
if (ret < 0)
return ret;
/* Read the result */
return dbgp_bulk_read(devnum, 0, data, size);
}
/* Find a PCI capability */
static u32 __init find_cap(u32 num, u32 slot, u32 func, int cap)
{
u8 pos;
int bytes;
if (!(read_pci_config_16(num, slot, func, PCI_STATUS) &
PCI_STATUS_CAP_LIST))
return 0;
pos = read_pci_config_byte(num, slot, func, PCI_CAPABILITY_LIST);
for (bytes = 0; bytes < 48 && pos >= 0x40; bytes++) {
u8 id;
pos &= ~3;
id = read_pci_config_byte(num, slot, func, pos+PCI_CAP_LIST_ID);
if (id == 0xff)
break;
if (id == cap)
return pos;
pos = read_pci_config_byte(num, slot, func,
pos+PCI_CAP_LIST_NEXT);
}
return 0;
}
static u32 __init __find_dbgp(u32 bus, u32 slot, u32 func)
{
u32 class;
class = read_pci_config(bus, slot, func, PCI_CLASS_REVISION);
if ((class >> 8) != PCI_CLASS_SERIAL_USB_EHCI)
return 0;
return find_cap(bus, slot, func, PCI_CAP_ID_EHCI_DEBUG);
}
static u32 __init find_dbgp(int ehci_num, u32 *rbus, u32 *rslot, u32 *rfunc)
{
u32 bus, slot, func;
for (bus = 0; bus < 256; bus++) {
for (slot = 0; slot < 32; slot++) {
for (func = 0; func < 8; func++) {
unsigned cap;
cap = __find_dbgp(bus, slot, func);
if (!cap)
continue;
if (ehci_num-- != 0)
continue;
*rbus = bus;
*rslot = slot;
*rfunc = func;
return cap;
}
}
}
return 0;
}
static int ehci_reset_port(int port)
{
u32 portsc;
u32 delay_time, delay;
int loop;
/* Reset the usb debug port */
portsc = readl(&ehci_regs->port_status[port - 1]);
portsc &= ~PORT_PE;
portsc |= PORT_RESET;
writel(portsc, &ehci_regs->port_status[port - 1]);
delay = HUB_ROOT_RESET_TIME;
for (delay_time = 0; delay_time < HUB_RESET_TIMEOUT;
delay_time += delay) {
dbgp_mdelay(delay);
portsc = readl(&ehci_regs->port_status[port - 1]);
if (portsc & PORT_RESET) {
/* force reset to complete */
loop = 2;
writel(portsc & ~(PORT_RWC_BITS | PORT_RESET),
&ehci_regs->port_status[port - 1]);
do {
portsc = readl(&ehci_regs->port_status[port-1]);
} while ((portsc & PORT_RESET) && (--loop > 0));
}
/* Device went away? */
if (!(portsc & PORT_CONNECT))
return -ENOTCONN;
/* bomb out completely if something weird happend */
if ((portsc & PORT_CSC))
return -EINVAL;
/* If we've finished resetting, then break out of the loop */
if (!(portsc & PORT_RESET) && (portsc & PORT_PE))
return 0;
}
return -EBUSY;
}
static int ehci_wait_for_port(int port)
{
u32 status;
int ret, reps;
for (reps = 0; reps < 3; reps++) {
dbgp_mdelay(100);
status = readl(&ehci_regs->status);
if (status & STS_PCD) {
ret = ehci_reset_port(port);
if (ret == 0)
return 0;
}
}
return -ENOTCONN;
}
#ifdef DBGP_DEBUG
# define dbgp_printk early_printk
#else
static inline void dbgp_printk(const char *fmt, ...) { }
#endif
typedef void (*set_debug_port_t)(int port);
static void default_set_debug_port(int port)
{
}
static set_debug_port_t set_debug_port = default_set_debug_port;
static void nvidia_set_debug_port(int port)
{
u32 dword;
dword = read_pci_config(ehci_dev.bus, ehci_dev.slot, ehci_dev.func,
0x74);
dword &= ~(0x0f<<12);
dword |= ((port & 0x0f)<<12);
write_pci_config(ehci_dev.bus, ehci_dev.slot, ehci_dev.func, 0x74,
dword);
dbgp_printk("set debug port to %d\n", port);
}
static void __init detect_set_debug_port(void)
{
u32 vendorid;
vendorid = read_pci_config(ehci_dev.bus, ehci_dev.slot, ehci_dev.func,
0x00);
if ((vendorid & 0xffff) == 0x10de) {
dbgp_printk("using nvidia set_debug_port\n");
set_debug_port = nvidia_set_debug_port;
}
}
static int __init ehci_setup(void)
{
struct usb_debug_descriptor dbgp_desc;
u32 cmd, ctrl, status, portsc, hcs_params;
u32 debug_port, new_debug_port = 0, n_ports;
u32 devnum;
int ret, i;
int loop;
int port_map_tried;
int playtimes = 3;
try_next_time:
port_map_tried = 0;
try_next_port:
hcs_params = readl(&ehci_caps->hcs_params);
debug_port = HCS_DEBUG_PORT(hcs_params);
n_ports = HCS_N_PORTS(hcs_params);
dbgp_printk("debug_port: %d\n", debug_port);
dbgp_printk("n_ports: %d\n", n_ports);
for (i = 1; i <= n_ports; i++) {
portsc = readl(&ehci_regs->port_status[i-1]);
dbgp_printk("portstatus%d: %08x\n", i, portsc);
}
if (port_map_tried && (new_debug_port != debug_port)) {
if (--playtimes) {
set_debug_port(new_debug_port);
goto try_next_time;
}
return -1;
}
loop = 10;
/* Reset the EHCI controller */
cmd = readl(&ehci_regs->command);
cmd |= CMD_RESET;
writel(cmd, &ehci_regs->command);
do {
cmd = readl(&ehci_regs->command);
} while ((cmd & CMD_RESET) && (--loop > 0));
if (!loop) {
dbgp_printk("can not reset ehci\n");
return -1;
}
dbgp_printk("ehci reset done\n");
/* Claim ownership, but do not enable yet */
ctrl = readl(&ehci_debug->control);
ctrl |= DBGP_OWNER;
ctrl &= ~(DBGP_ENABLED | DBGP_INUSE);
writel(ctrl, &ehci_debug->control);
/* Start the ehci running */
cmd = readl(&ehci_regs->command);
cmd &= ~(CMD_LRESET | CMD_IAAD | CMD_PSE | CMD_ASE | CMD_RESET);
cmd |= CMD_RUN;
writel(cmd, &ehci_regs->command);
/* Ensure everything is routed to the EHCI */
writel(FLAG_CF, &ehci_regs->configured_flag);
/* Wait until the controller is no longer halted */
loop = 10;
do {
status = readl(&ehci_regs->status);
} while ((status & STS_HALT) && (--loop > 0));
if (!loop) {
dbgp_printk("ehci can be started\n");
return -1;
}
dbgp_printk("ehci started\n");
/* Wait for a device to show up in the debug port */
ret = ehci_wait_for_port(debug_port);
if (ret < 0) {
dbgp_printk("No device found in debug port\n");
goto next_debug_port;
}
dbgp_printk("ehci wait for port done\n");
/* Enable the debug port */
ctrl = readl(&ehci_debug->control);
ctrl |= DBGP_CLAIM;
writel(ctrl, &ehci_debug->control);
ctrl = readl(&ehci_debug->control);
if ((ctrl & DBGP_CLAIM) != DBGP_CLAIM) {
dbgp_printk("No device in debug port\n");
writel(ctrl & ~DBGP_CLAIM, &ehci_debug->control);
goto err;
}
dbgp_printk("debug ported enabled\n");
/* Completely transfer the debug device to the debug controller */
portsc = readl(&ehci_regs->port_status[debug_port - 1]);
portsc &= ~PORT_PE;
writel(portsc, &ehci_regs->port_status[debug_port - 1]);
dbgp_mdelay(100);
/* Find the debug device and make it device number 127 */
for (devnum = 0; devnum <= 127; devnum++) {
ret = dbgp_control_msg(devnum,
USB_DIR_IN | USB_TYPE_STANDARD | USB_RECIP_DEVICE,
USB_REQ_GET_DESCRIPTOR, (USB_DT_DEBUG << 8), 0,
&dbgp_desc, sizeof(dbgp_desc));
if (ret > 0)
break;
}
if (devnum > 127) {
dbgp_printk("Could not find attached debug device\n");
goto err;
}
if (ret < 0) {
dbgp_printk("Attached device is not a debug device\n");
goto err;
}
dbgp_endpoint_out = dbgp_desc.bDebugOutEndpoint;
/* Move the device to 127 if it isn't already there */
if (devnum != USB_DEBUG_DEVNUM) {
ret = dbgp_control_msg(devnum,
USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_DEVICE,
USB_REQ_SET_ADDRESS, USB_DEBUG_DEVNUM, 0, NULL, 0);
if (ret < 0) {
dbgp_printk("Could not move attached device to %d\n",
USB_DEBUG_DEVNUM);
goto err;
}
devnum = USB_DEBUG_DEVNUM;
dbgp_printk("debug device renamed to 127\n");
}
/* Enable the debug interface */
ret = dbgp_control_msg(USB_DEBUG_DEVNUM,
USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_DEVICE,
USB_REQ_SET_FEATURE, USB_DEVICE_DEBUG_MODE, 0, NULL, 0);
if (ret < 0) {
dbgp_printk(" Could not enable the debug device\n");
goto err;
}
dbgp_printk("debug interface enabled\n");
/* Perform a small write to get the even/odd data state in sync
*/
ret = dbgp_bulk_write(USB_DEBUG_DEVNUM, dbgp_endpoint_out, " ", 1);
if (ret < 0) {
dbgp_printk("dbgp_bulk_write failed: %d\n", ret);
goto err;
}
dbgp_printk("small write doned\n");
return 0;
err:
/* Things didn't work so remove my claim */
ctrl = readl(&ehci_debug->control);
ctrl &= ~(DBGP_CLAIM | DBGP_OUT);
writel(ctrl, &ehci_debug->control);
return -1;
next_debug_port:
port_map_tried |= (1<<(debug_port - 1));
new_debug_port = ((debug_port-1+1)%n_ports) + 1;
if (port_map_tried != ((1<<n_ports) - 1)) {
set_debug_port(new_debug_port);
goto try_next_port;
}
if (--playtimes) {
set_debug_port(new_debug_port);
goto try_next_time;
}
return -1;
}
static int __init early_dbgp_init(char *s)
{
u32 debug_port, bar, offset;
u32 bus, slot, func, cap;
void __iomem *ehci_bar;
u32 dbgp_num;
u32 bar_val;
char *e;
int ret;
u8 byte;
if (!early_pci_allowed())
return -1;
dbgp_num = 0;
if (*s)
dbgp_num = simple_strtoul(s, &e, 10);
dbgp_printk("dbgp_num: %d\n", dbgp_num);
cap = find_dbgp(dbgp_num, &bus, &slot, &func);
if (!cap)
return -1;
dbgp_printk("Found EHCI debug port on %02x:%02x.%1x\n", bus, slot,
func);
debug_port = read_pci_config(bus, slot, func, cap);
bar = (debug_port >> 29) & 0x7;
bar = (bar * 4) + 0xc;
offset = (debug_port >> 16) & 0xfff;
dbgp_printk("bar: %02x offset: %03x\n", bar, offset);
if (bar != PCI_BASE_ADDRESS_0) {
dbgp_printk("only debug ports on bar 1 handled.\n");
return -1;
}
bar_val = read_pci_config(bus, slot, func, PCI_BASE_ADDRESS_0);
dbgp_printk("bar_val: %02x offset: %03x\n", bar_val, offset);
if (bar_val & ~PCI_BASE_ADDRESS_MEM_MASK) {
dbgp_printk("only simple 32bit mmio bars supported\n");
return -1;
}
/* double check if the mem space is enabled */
byte = read_pci_config_byte(bus, slot, func, 0x04);
if (!(byte & 0x2)) {
byte |= 0x02;
write_pci_config_byte(bus, slot, func, 0x04, byte);
dbgp_printk("mmio for ehci enabled\n");
}
/*
* FIXME I don't have the bar size so just guess PAGE_SIZE is more
* than enough. 1K is the biggest I have seen.
*/
set_fixmap_nocache(FIX_DBGP_BASE, bar_val & PAGE_MASK);
ehci_bar = (void __iomem *)__fix_to_virt(FIX_DBGP_BASE);
ehci_bar += bar_val & ~PAGE_MASK;
dbgp_printk("ehci_bar: %p\n", ehci_bar);
ehci_caps = ehci_bar;
ehci_regs = ehci_bar + HC_LENGTH(readl(&ehci_caps->hc_capbase));
ehci_debug = ehci_bar + offset;
ehci_dev.bus = bus;
ehci_dev.slot = slot;
ehci_dev.func = func;
detect_set_debug_port();
ret = ehci_setup();
if (ret < 0) {
dbgp_printk("ehci_setup failed\n");
ehci_debug = NULL;
return -1;
}
return 0;
}
static void early_dbgp_write(struct console *con, const char *str, u32 n)
{
int chunk, ret;
if (!ehci_debug)
return;
while (n > 0) {
chunk = n;
if (chunk > DBGP_MAX_PACKET)
chunk = DBGP_MAX_PACKET;
ret = dbgp_bulk_write(USB_DEBUG_DEVNUM,
dbgp_endpoint_out, str, chunk);
str += chunk;
n -= chunk;
}
}
static struct console early_dbgp_console = {
.name = "earlydbg",
.write = early_dbgp_write,
.flags = CON_PRINTBUFFER,
.index = -1,
};
#endif
/* Console interface to a host file on AMD's SimNow! */
static int simnow_fd;
......@@ -165,6 +889,7 @@ enum {
static noinline long simnow(long cmd, long a, long b, long c)
{
long ret;
asm volatile("cpuid" :
"=a" (ret) :
"b" (a), "c" (b), "d" (c), "0" (MAGIC1), "D" (cmd + MAGIC2));
......@@ -174,6 +899,7 @@ static noinline long simnow(long cmd, long a, long b, long c)
static void __init simnow_init(char *str)
{
char *fn = "klog";
if (*str == '=')
fn = ++str;
/* error ignored */
......@@ -194,7 +920,7 @@ static struct console simnow_console = {
/* Direct interface for emergencies */
static struct console *early_console = &early_vga_console;
static int early_console_initialized;
static int __initdata early_console_initialized;
asmlinkage void early_printk(const char *fmt, ...)
{
......@@ -208,10 +934,11 @@ asmlinkage void early_printk(const char *fmt, ...)
va_end(ap);
}
static int __initdata keep_early;
static int __init setup_early_printk(char *buf)
{
int keep_early;
if (!buf)
return 0;
......@@ -219,8 +946,7 @@ static int __init setup_early_printk(char *buf)
return 0;
early_console_initialized = 1;
if (strstr(buf, "keep"))
keep_early = 1;
keep_early = (strstr(buf, "keep") != NULL);
if (!strncmp(buf, "serial", 6)) {
early_serial_init(buf + 6);
......@@ -238,6 +964,17 @@ static int __init setup_early_printk(char *buf)
simnow_init(buf + 6);
early_console = &simnow_console;
keep_early = 1;
#ifdef CONFIG_EARLY_PRINTK_DBGP
} else if (!strncmp(buf, "dbgp", 4)) {
if (early_dbgp_init(buf+4) < 0)
return 0;
early_console = &early_dbgp_console;
/*
* usb subsys will reset ehci controller, so don't keep
* that early console
*/
keep_early = 0;
#endif
#ifdef CONFIG_HVC_XEN
} else if (!strncmp(buf, "xen", 3)) {
early_console = &xenboot_console;
......@@ -251,4 +988,5 @@ static int __init setup_early_printk(char *buf)
register_console(early_console);
return 0;
}
early_param("earlyprintk", setup_early_printk);
arch/x86/kernel/i387.c
浏览文件 @ 807f4f8c
......@@ -468,9 +468,23 @@ static int save_i387_fxsave(struct _fpstate_ia32 __user *buf)
static int save_i387_xsave(void __user *buf)
{
struct task_struct *tsk = current;
struct _fpstate_ia32 __user *fx = buf;
int err = 0;
/*
* For legacy compatible, we always set FP/SSE bits in the bit
* vector while saving the state to the user context.
* This will enable us capturing any changes(during sigreturn) to
* the FP/SSE bits by the legacy applications which don't touch
* xstate_bv in the xsave header.
*
* xsave aware applications can change the xstate_bv in the xsave
* header as well as change any contents in the memory layout.
* xrestore as part of sigreturn will capture all the changes.
*/
tsk->thread.xstate->xsave.xsave_hdr.xstate_bv |= XSTATE_FPSSE;
if (save_i387_fxsave(fx) < 0)
return -1;
......
arch/x86/kernel/io_apic_64.c
浏览文件 @ 807f4f8c
......@@ -1281,8 +1281,8 @@ __apicdebuginit(void) print_local_APIC(void *dummy)
printk(KERN_DEBUG "... APIC ESR: %08x\n", v);
icr = apic_icr_read();
printk(KERN_DEBUG "... APIC ICR: %08x\n", icr);
printk(KERN_DEBUG "... APIC ICR2: %08x\n", icr >> 32);
printk(KERN_DEBUG "... APIC ICR: %08x\n", (u32)icr);
printk(KERN_DEBUG "... APIC ICR2: %08x\n", (u32)(icr >> 32));
v = apic_read(APIC_LVTT);
printk(KERN_DEBUG "... APIC LVTT: %08x\n", v);
......
arch/x86/kernel/ldt.c
浏览文件 @ 807f4f8c
......@@ -52,6 +52,8 @@ static int alloc_ldt(mm_context_t *pc, int mincount, int reload)
memset(newldt + oldsize * LDT_ENTRY_SIZE, 0,
(mincount - oldsize) * LDT_ENTRY_SIZE);
paravirt_alloc_ldt(newldt, mincount);
#ifdef CONFIG_X86_64
/* CHECKME: Do we really need this ? */
wmb();
......@@ -74,6 +76,7 @@ static int alloc_ldt(mm_context_t *pc, int mincount, int reload)
#endif
}
if (oldsize) {
paravirt_free_ldt(oldldt, oldsize);
if (oldsize * LDT_ENTRY_SIZE > PAGE_SIZE)
vfree(oldldt);
else
......@@ -85,10 +88,13 @@ static int alloc_ldt(mm_context_t *pc, int mincount, int reload)
static inline int copy_ldt(mm_context_t *new, mm_context_t *old)
{
int err = alloc_ldt(new, old->size, 0);
int i;
if (err < 0)
return err;
memcpy(new->ldt, old->ldt, old->size * LDT_ENTRY_SIZE);
for(i = 0; i < old->size; i++)
write_ldt_entry(new->ldt, i, old->ldt + i * LDT_ENTRY_SIZE);
return 0;
}
......@@ -125,6 +131,7 @@ void destroy_context(struct mm_struct *mm)
if (mm == current->active_mm)
clear_LDT();
#endif
paravirt_free_ldt(mm->context.ldt, mm->context.size);
if (mm->context.size * LDT_ENTRY_SIZE > PAGE_SIZE)
vfree(mm->context.ldt);
else
......
arch/x86/kernel/microcode_amd.c 0 → 100644
浏览文件 @ 807f4f8c
/*
* AMD CPU Microcode Update Driver for Linux
* Copyright (C) 2008 Advanced Micro Devices Inc.
*
* Author: Peter Oruba <peter.oruba@amd.com>
*
* Based on work by:
* Tigran Aivazian <tigran@aivazian.fsnet.co.uk>
*
* This driver allows to upgrade microcode on AMD
* family 0x10 and 0x11 processors.
*
* Licensed unter the terms of the GNU General Public
* License version 2. See file COPYING for details.
*/
#include <linux/capability.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/sched.h>
#include <linux/cpumask.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/miscdevice.h>
#include <linux/spinlock.h>
#include <linux/mm.h>
#include <linux/fs.h>
#include <linux/mutex.h>
#include <linux/cpu.h>
#include <linux/firmware.h>
#include <linux/platform_device.h>
#include <linux/pci.h>
#include <linux/pci_ids.h>
#include <asm/msr.h>
#include <asm/uaccess.h>
#include <asm/processor.h>
#include <asm/microcode.h>
MODULE_DESCRIPTION("AMD Microcode Update Driver");
MODULE_AUTHOR("Peter Oruba <peter.oruba@amd.com>");
MODULE_LICENSE("GPL v2");
#define UCODE_MAGIC 0x00414d44
#define UCODE_EQUIV_CPU_TABLE_TYPE 0x00000000
#define UCODE_UCODE_TYPE 0x00000001
struct equiv_cpu_entry {
unsigned int installed_cpu;
unsigned int fixed_errata_mask;
unsigned int fixed_errata_compare;
unsigned int equiv_cpu;
};
struct microcode_header_amd {
unsigned int data_code;
unsigned int patch_id;
unsigned char mc_patch_data_id[2];
unsigned char mc_patch_data_len;
unsigned char init_flag;
unsigned int mc_patch_data_checksum;
unsigned int nb_dev_id;
unsigned int sb_dev_id;
unsigned char processor_rev_id[2];
unsigned char nb_rev_id;
unsigned char sb_rev_id;
unsigned char bios_api_rev;
unsigned char reserved1[3];
unsigned int match_reg[8];
};
struct microcode_amd {
struct microcode_header_amd hdr;
unsigned int mpb[0];
};
#define UCODE_MAX_SIZE (2048)
#define DEFAULT_UCODE_DATASIZE (896)
#define MC_HEADER_SIZE (sizeof(struct microcode_header_amd))
#define DEFAULT_UCODE_TOTALSIZE (DEFAULT_UCODE_DATASIZE + MC_HEADER_SIZE)
#define DWSIZE (sizeof(u32))
/* For now we support a fixed ucode total size only */
#define get_totalsize(mc) \
((((struct microcode_amd *)mc)->hdr.mc_patch_data_len * 28) \
+ MC_HEADER_SIZE)
/* serialize access to the physical write */
static DEFINE_SPINLOCK(microcode_update_lock);
static struct equiv_cpu_entry *equiv_cpu_table;
static int collect_cpu_info_amd(int cpu, struct cpu_signature *csig)
{
struct cpuinfo_x86 *c = &cpu_data(cpu);
memset(csig, 0, sizeof(*csig));
if (c->x86_vendor != X86_VENDOR_AMD || c->x86 < 0x10) {
printk(KERN_ERR "microcode: CPU%d not a capable AMD processor\n",
cpu);
return -1;
}
asm volatile("movl %1, %%ecx; rdmsr"
: "=a" (csig->rev)
: "i" (0x0000008B) : "ecx");
printk(KERN_INFO "microcode: collect_cpu_info_amd : patch_id=0x%x\n",
csig->rev);
return 0;
}
static int get_matching_microcode(int cpu, void *mc, int rev)
{
struct microcode_header_amd *mc_header = mc;
struct pci_dev *nb_pci_dev, *sb_pci_dev;
unsigned int current_cpu_id;
unsigned int equiv_cpu_id = 0x00;
unsigned int i = 0;
BUG_ON(equiv_cpu_table == NULL);
current_cpu_id = cpuid_eax(0x00000001);
while (equiv_cpu_table[i].installed_cpu != 0) {
if (current_cpu_id == equiv_cpu_table[i].installed_cpu) {
equiv_cpu_id = equiv_cpu_table[i].equiv_cpu;
break;
}
i++;
}
if (!equiv_cpu_id) {
printk(KERN_ERR "microcode: CPU%d cpu_id "
"not found in equivalent cpu table \n", cpu);
return 0;
}
if ((mc_header->processor_rev_id[0]) != (equiv_cpu_id & 0xff)) {
printk(KERN_ERR
"microcode: CPU%d patch does not match "
"(patch is %x, cpu extended is %x) \n",
cpu, mc_header->processor_rev_id[0],
(equiv_cpu_id & 0xff));
return 0;
}
if ((mc_header->processor_rev_id[1]) != ((equiv_cpu_id >> 16) & 0xff)) {
printk(KERN_ERR "microcode: CPU%d patch does not match "
"(patch is %x, cpu base id is %x) \n",
cpu, mc_header->processor_rev_id[1],
((equiv_cpu_id >> 16) & 0xff));
return 0;
}
/* ucode may be northbridge specific */
if (mc_header->nb_dev_id) {
nb_pci_dev = pci_get_device(PCI_VENDOR_ID_AMD,
(mc_header->nb_dev_id & 0xff),
NULL);
if ((!nb_pci_dev) ||
(mc_header->nb_rev_id != nb_pci_dev->revision)) {
printk(KERN_ERR "microcode: CPU%d NB mismatch \n", cpu);
pci_dev_put(nb_pci_dev);
return 0;
}
pci_dev_put(nb_pci_dev);
}
/* ucode may be southbridge specific */
if (mc_header->sb_dev_id) {
sb_pci_dev = pci_get_device(PCI_VENDOR_ID_AMD,
(mc_header->sb_dev_id & 0xff),
NULL);
if ((!sb_pci_dev) ||
(mc_header->sb_rev_id != sb_pci_dev->revision)) {
printk(KERN_ERR "microcode: CPU%d SB mismatch \n", cpu);
pci_dev_put(sb_pci_dev);
return 0;
}
pci_dev_put(sb_pci_dev);
}
if (mc_header->patch_id <= rev)
return 0;
return 1;
}
static void apply_microcode_amd(int cpu)
{
unsigned long flags;
unsigned int eax, edx;
unsigned int rev;
int cpu_num = raw_smp_processor_id();
struct ucode_cpu_info *uci = ucode_cpu_info + cpu_num;
struct microcode_amd *mc_amd = uci->mc;
unsigned long addr;
/* We should bind the task to the CPU */
BUG_ON(cpu_num != cpu);
if (mc_amd == NULL)
return;
spin_lock_irqsave(&microcode_update_lock, flags);
addr = (unsigned long)&mc_amd->hdr.data_code;
edx = (unsigned int)(((unsigned long)upper_32_bits(addr)));
eax = (unsigned int)(((unsigned long)lower_32_bits(addr)));
asm volatile("movl %0, %%ecx; wrmsr" :
: "i" (0xc0010020), "a" (eax), "d" (edx) : "ecx");
/* get patch id after patching */
asm volatile("movl %1, %%ecx; rdmsr"
: "=a" (rev)
: "i" (0x0000008B) : "ecx");
spin_unlock_irqrestore(&microcode_update_lock, flags);
/* check current patch id and patch's id for match */
if (rev != mc_amd->hdr.patch_id) {
printk(KERN_ERR "microcode: CPU%d update from revision "
"0x%x to 0x%x failed\n", cpu_num,
mc_amd->hdr.patch_id, rev);
return;
}
printk(KERN_INFO "microcode: CPU%d updated from revision "
"0x%x to 0x%x \n",
cpu_num, uci->cpu_sig.rev, mc_amd->hdr.patch_id);
uci->cpu_sig.rev = rev;
}
static void * get_next_ucode(u8 *buf, unsigned int size,
int (*get_ucode_data)(void *, const void *, size_t),
unsigned int *mc_size)
{
unsigned int total_size;
#define UCODE_CONTAINER_SECTION_HDR 8
u8 section_hdr[UCODE_CONTAINER_SECTION_HDR];
void *mc;
if (get_ucode_data(section_hdr, buf, UCODE_CONTAINER_SECTION_HDR))
return NULL;
if (section_hdr[0] != UCODE_UCODE_TYPE) {
printk(KERN_ERR "microcode: error! "
"Wrong microcode payload type field\n");
return NULL;
}
total_size = (unsigned long) (section_hdr[4] + (section_hdr[5] << 8));
printk(KERN_INFO "microcode: size %u, total_size %u\n",
size, total_size);
if (total_size > size || total_size > UCODE_MAX_SIZE) {
printk(KERN_ERR "microcode: error! Bad data in microcode data file\n");
return NULL;
}
mc = vmalloc(UCODE_MAX_SIZE);
if (mc) {
memset(mc, 0, UCODE_MAX_SIZE);
if (get_ucode_data(mc, buf + UCODE_CONTAINER_SECTION_HDR, total_size)) {
vfree(mc);
mc = NULL;
} else
*mc_size = total_size + UCODE_CONTAINER_SECTION_HDR;
}
#undef UCODE_CONTAINER_SECTION_HDR
return mc;
}
static int install_equiv_cpu_table(u8 *buf,
int (*get_ucode_data)(void *, const void *, size_t))
{
#define UCODE_CONTAINER_HEADER_SIZE 12
u8 *container_hdr[UCODE_CONTAINER_HEADER_SIZE];
unsigned int *buf_pos = (unsigned int *)container_hdr;
unsigned long size;
if (get_ucode_data(&container_hdr, buf, UCODE_CONTAINER_HEADER_SIZE))
return 0;
size = buf_pos[2];
if (buf_pos[1] != UCODE_EQUIV_CPU_TABLE_TYPE || !size) {
printk(KERN_ERR "microcode: error! "
"Wrong microcode equivalnet cpu table\n");
return 0;
}
equiv_cpu_table = (struct equiv_cpu_entry *) vmalloc(size);
if (!equiv_cpu_table) {
printk(KERN_ERR "microcode: error, can't allocate memory for equiv CPU table\n");
return 0;
}
buf += UCODE_CONTAINER_HEADER_SIZE;
if (get_ucode_data(equiv_cpu_table, buf, size)) {
vfree(equiv_cpu_table);
return 0;
}
return size + UCODE_CONTAINER_HEADER_SIZE; /* add header length */
#undef UCODE_CONTAINER_HEADER_SIZE
}
static void free_equiv_cpu_table(void)
{
if (equiv_cpu_table) {
vfree(equiv_cpu_table);
equiv_cpu_table = NULL;
}
}
static int generic_load_microcode(int cpu, void *data, size_t size,
int (*get_ucode_data)(void *, const void *, size_t))
{
struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
u8 *ucode_ptr = data, *new_mc = NULL, *mc;
int new_rev = uci->cpu_sig.rev;
unsigned int leftover;
unsigned long offset;
offset = install_equiv_cpu_table(ucode_ptr, get_ucode_data);
if (!offset) {
printk(KERN_ERR "microcode: installing equivalent cpu table failed\n");
return -EINVAL;
}
ucode_ptr += offset;
leftover = size - offset;
while (leftover) {
unsigned int uninitialized_var(mc_size);
struct microcode_header_amd *mc_header;
mc = get_next_ucode(ucode_ptr, leftover, get_ucode_data, &mc_size);
if (!mc)
break;
mc_header = (struct microcode_header_amd *)mc;
if (get_matching_microcode(cpu, mc, new_rev)) {
if (new_mc)
vfree(new_mc);
new_rev = mc_header->patch_id;
new_mc = mc;
} else
vfree(mc);
ucode_ptr += mc_size;
leftover -= mc_size;
}
if (new_mc) {
if (!leftover) {
if (uci->mc)
vfree(uci->mc);
uci->mc = new_mc;
pr_debug("microcode: CPU%d found a matching microcode update with"
" version 0x%x (current=0x%x)\n",
cpu, new_rev, uci->cpu_sig.rev);
} else
vfree(new_mc);
}
free_equiv_cpu_table();
return (int)leftover;
}
static int get_ucode_fw(void *to, const void *from, size_t n)
{
memcpy(to, from, n);
return 0;
}
static int request_microcode_fw(int cpu, struct device *device)
{
const char *fw_name = "amd-ucode/microcode_amd.bin";
const struct firmware *firmware;
int ret;
/* We should bind the task to the CPU */
BUG_ON(cpu != raw_smp_processor_id());
ret = request_firmware(&firmware, fw_name, device);
if (ret) {
printk(KERN_ERR "microcode: ucode data file %s load failed\n", fw_name);
return ret;
}
ret = generic_load_microcode(cpu, (void*)firmware->data, firmware->size,
&get_ucode_fw);
release_firmware(firmware);
return ret;
}
static int request_microcode_user(int cpu, const void __user *buf, size_t size)
{
printk(KERN_WARNING "microcode: AMD microcode update via /dev/cpu/microcode"
"is not supported\n");
return -1;
}
static void microcode_fini_cpu_amd(int cpu)
{
struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
vfree(uci->mc);
uci->mc = NULL;
}
static struct microcode_ops microcode_amd_ops = {
.request_microcode_user = request_microcode_user,
.request_microcode_fw = request_microcode_fw,
.collect_cpu_info = collect_cpu_info_amd,
.apply_microcode = apply_microcode_amd,
.microcode_fini_cpu = microcode_fini_cpu_amd,
};
struct microcode_ops * __init init_amd_microcode(void)
{
return &microcode_amd_ops;
}
arch/x86/kernel/microcode_intel.c 0 → 100644
浏览文件 @ 807f4f8c
/*
* Intel CPU Microcode Update Driver for Linux
*
* Copyright (C) 2000-2006 Tigran Aivazian <tigran@aivazian.fsnet.co.uk>
* 2006 Shaohua Li <shaohua.li@intel.com>
*
* This driver allows to upgrade microcode on Intel processors
* belonging to IA-32 family - PentiumPro, Pentium II,
* Pentium III, Xeon, Pentium 4, etc.
*
* Reference: Section 8.11 of Volume 3a, IA-32 Intel? Architecture
* Software Developer's Manual
* Order Number 253668 or free download from:
*
* http://developer.intel.com/design/pentium4/manuals/253668.htm
*
* For more information, go to http://www.urbanmyth.org/microcode
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* 1.0 16 Feb 2000, Tigran Aivazian <tigran@sco.com>
* Initial release.
* 1.01 18 Feb 2000, Tigran Aivazian <tigran@sco.com>
* Added read() support + cleanups.
* 1.02 21 Feb 2000, Tigran Aivazian <tigran@sco.com>
* Added 'device trimming' support. open(O_WRONLY) zeroes
* and frees the saved copy of applied microcode.
* 1.03 29 Feb 2000, Tigran Aivazian <tigran@sco.com>
* Made to use devfs (/dev/cpu/microcode) + cleanups.
* 1.04 06 Jun 2000, Simon Trimmer <simon@veritas.com>
* Added misc device support (now uses both devfs and misc).
* Added MICROCODE_IOCFREE ioctl to clear memory.
* 1.05 09 Jun 2000, Simon Trimmer <simon@veritas.com>
* Messages for error cases (non Intel & no suitable microcode).
* 1.06 03 Aug 2000, Tigran Aivazian <tigran@veritas.com>
* Removed ->release(). Removed exclusive open and status bitmap.
* Added microcode_rwsem to serialize read()/write()/ioctl().
* Removed global kernel lock usage.
* 1.07 07 Sep 2000, Tigran Aivazian <tigran@veritas.com>
* Write 0 to 0x8B msr and then cpuid before reading revision,
* so that it works even if there were no update done by the
* BIOS. Otherwise, reading from 0x8B gives junk (which happened
* to be 0 on my machine which is why it worked even when I
* disabled update by the BIOS)
* Thanks to Eric W. Biederman <ebiederman@lnxi.com> for the fix.
* 1.08 11 Dec 2000, Richard Schaal <richard.schaal@intel.com> and
* Tigran Aivazian <tigran@veritas.com>
* Intel Pentium 4 processor support and bugfixes.
* 1.09 30 Oct 2001, Tigran Aivazian <tigran@veritas.com>
* Bugfix for HT (Hyper-Threading) enabled processors
* whereby processor resources are shared by all logical processors
* in a single CPU package.
* 1.10 28 Feb 2002 Asit K Mallick <asit.k.mallick@intel.com> and
* Tigran Aivazian <tigran@veritas.com>,
* Serialize updates as required on HT processors due to
* speculative nature of implementation.
* 1.11 22 Mar 2002 Tigran Aivazian <tigran@veritas.com>
* Fix the panic when writing zero-length microcode chunk.
* 1.12 29 Sep 2003 Nitin Kamble <nitin.a.kamble@intel.com>,
* Jun Nakajima <jun.nakajima@intel.com>
* Support for the microcode updates in the new format.
* 1.13 10 Oct 2003 Tigran Aivazian <tigran@veritas.com>
* Removed ->read() method and obsoleted MICROCODE_IOCFREE ioctl
* because we no longer hold a copy of applied microcode
* in kernel memory.
* 1.14 25 Jun 2004 Tigran Aivazian <tigran@veritas.com>
* Fix sigmatch() macro to handle old CPUs with pf == 0.
* Thanks to Stuart Swales for pointing out this bug.
*/
#include <linux/capability.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/sched.h>
#include <linux/smp_lock.h>
#include <linux/cpumask.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/miscdevice.h>
#include <linux/spinlock.h>
#include <linux/mm.h>
#include <linux/fs.h>
#include <linux/mutex.h>
#include <linux/cpu.h>
#include <linux/firmware.h>
#include <linux/platform_device.h>
#include <asm/msr.h>
#include <asm/uaccess.h>
#include <asm/processor.h>
#include <asm/microcode.h>
MODULE_DESCRIPTION("Microcode Update Driver");
MODULE_AUTHOR("Tigran Aivazian <tigran@aivazian.fsnet.co.uk>");
MODULE_LICENSE("GPL");
struct microcode_header_intel {
unsigned int hdrver;
unsigned int rev;
unsigned int date;
unsigned int sig;
unsigned int cksum;
unsigned int ldrver;
unsigned int pf;
unsigned int datasize;
unsigned int totalsize;
unsigned int reserved[3];
};
struct microcode_intel {
struct microcode_header_intel hdr;
unsigned int bits[0];
};
/* microcode format is extended from prescott processors */
struct extended_signature {
unsigned int sig;
unsigned int pf;
unsigned int cksum;
};
struct extended_sigtable {
unsigned int count;
unsigned int cksum;
unsigned int reserved[3];
struct extended_signature sigs[0];
};
#define DEFAULT_UCODE_DATASIZE (2000)
#define MC_HEADER_SIZE (sizeof(struct microcode_header_intel))
#define DEFAULT_UCODE_TOTALSIZE (DEFAULT_UCODE_DATASIZE + MC_HEADER_SIZE)
#define EXT_HEADER_SIZE (sizeof(struct extended_sigtable))
#define EXT_SIGNATURE_SIZE (sizeof(struct extended_signature))
#define DWSIZE (sizeof(u32))
#define get_totalsize(mc) \
(((struct microcode_intel *)mc)->hdr.totalsize ? \
((struct microcode_intel *)mc)->hdr.totalsize : \
DEFAULT_UCODE_TOTALSIZE)
#define get_datasize(mc) \
(((struct microcode_intel *)mc)->hdr.datasize ? \
((struct microcode_intel *)mc)->hdr.datasize : DEFAULT_UCODE_DATASIZE)
#define sigmatch(s1, s2, p1, p2) \
(((s1) == (s2)) && (((p1) & (p2)) || (((p1) == 0) && ((p2) == 0))))
#define exttable_size(et) ((et)->count * EXT_SIGNATURE_SIZE + EXT_HEADER_SIZE)
/* serialize access to the physical write to MSR 0x79 */
static DEFINE_SPINLOCK(microcode_update_lock);
static int collect_cpu_info(int cpu_num, struct cpu_signature *csig)
{
struct cpuinfo_x86 *c = &cpu_data(cpu_num);
unsigned int val[2];
memset(csig, 0, sizeof(*csig));
if (c->x86_vendor != X86_VENDOR_INTEL || c->x86 < 6 ||
cpu_has(c, X86_FEATURE_IA64)) {
printk(KERN_ERR "microcode: CPU%d not a capable Intel "
"processor\n", cpu_num);
return -1;
}
csig->sig = cpuid_eax(0x00000001);
if ((c->x86_model >= 5) || (c->x86 > 6)) {
/* get processor flags from MSR 0x17 */
rdmsr(MSR_IA32_PLATFORM_ID, val[0], val[1]);
csig->pf = 1 << ((val[1] >> 18) & 7);
}
wrmsr(MSR_IA32_UCODE_REV, 0, 0);
/* see notes above for revision 1.07. Apparent chip bug */
sync_core();
/* get the current revision from MSR 0x8B */
rdmsr(MSR_IA32_UCODE_REV, val[0], csig->rev);
pr_debug("microcode: collect_cpu_info : sig=0x%x, pf=0x%x, rev=0x%x\n",
csig->sig, csig->pf, csig->rev);
return 0;
}
static inline int update_match_cpu(struct cpu_signature *csig, int sig, int pf)
{
return (!sigmatch(sig, csig->sig, pf, csig->pf)) ? 0 : 1;
}
static inline int
update_match_revision(struct microcode_header_intel *mc_header, int rev)
{
return (mc_header->rev <= rev) ? 0 : 1;
}
static int microcode_sanity_check(void *mc)
{
struct microcode_header_intel *mc_header = mc;
struct extended_sigtable *ext_header = NULL;
struct extended_signature *ext_sig;
unsigned long total_size, data_size, ext_table_size;
int sum, orig_sum, ext_sigcount = 0, i;
total_size = get_totalsize(mc_header);
data_size = get_datasize(mc_header);
if (data_size + MC_HEADER_SIZE > total_size) {
printk(KERN_ERR "microcode: error! "
"Bad data size in microcode data file\n");
return -EINVAL;
}
if (mc_header->ldrver != 1 || mc_header->hdrver != 1) {
printk(KERN_ERR "microcode: error! "
"Unknown microcode update format\n");
return -EINVAL;
}
ext_table_size = total_size - (MC_HEADER_SIZE + data_size);
if (ext_table_size) {
if ((ext_table_size < EXT_HEADER_SIZE)
|| ((ext_table_size - EXT_HEADER_SIZE) % EXT_SIGNATURE_SIZE)) {
printk(KERN_ERR "microcode: error! "
"Small exttable size in microcode data file\n");
return -EINVAL;
}
ext_header = mc + MC_HEADER_SIZE + data_size;
if (ext_table_size != exttable_size(ext_header)) {
printk(KERN_ERR "microcode: error! "
"Bad exttable size in microcode data file\n");
return -EFAULT;
}
ext_sigcount = ext_header->count;
}
/* check extended table checksum */
if (ext_table_size) {
int ext_table_sum = 0;
int *ext_tablep = (int *)ext_header;
i = ext_table_size / DWSIZE;
while (i--)
ext_table_sum += ext_tablep[i];
if (ext_table_sum) {
printk(KERN_WARNING "microcode: aborting, "
"bad extended signature table checksum\n");
return -EINVAL;
}
}
/* calculate the checksum */
orig_sum = 0;
i = (MC_HEADER_SIZE + data_size) / DWSIZE;
while (i--)
orig_sum += ((int *)mc)[i];
if (orig_sum) {
printk(KERN_ERR "microcode: aborting, bad checksum\n");
return -EINVAL;
}
if (!ext_table_size)
return 0;
/* check extended signature checksum */
for (i = 0; i < ext_sigcount; i++) {
ext_sig = (void *)ext_header + EXT_HEADER_SIZE +
EXT_SIGNATURE_SIZE * i;
sum = orig_sum
- (mc_header->sig + mc_header->pf + mc_header->cksum)
+ (ext_sig->sig + ext_sig->pf + ext_sig->cksum);
if (sum) {
printk(KERN_ERR "microcode: aborting, bad checksum\n");
return -EINVAL;
}
}
return 0;
}
/*
* return 0 - no update found
* return 1 - found update
*/
static int
get_matching_microcode(struct cpu_signature *cpu_sig, void *mc, int rev)
{
struct microcode_header_intel *mc_header = mc;
struct extended_sigtable *ext_header;
unsigned long total_size = get_totalsize(mc_header);
int ext_sigcount, i;
struct extended_signature *ext_sig;
if (!update_match_revision(mc_header, rev))
return 0;
if (update_match_cpu(cpu_sig, mc_header->sig, mc_header->pf))
return 1;
/* Look for ext. headers: */
if (total_size <= get_datasize(mc_header) + MC_HEADER_SIZE)
return 0;
ext_header = mc + get_datasize(mc_header) + MC_HEADER_SIZE;
ext_sigcount = ext_header->count;
ext_sig = (void *)ext_header + EXT_HEADER_SIZE;
for (i = 0; i < ext_sigcount; i++) {
if (update_match_cpu(cpu_sig, ext_sig->sig, ext_sig->pf))
return 1;
ext_sig++;
}
return 0;
}
static void apply_microcode(int cpu)
{
unsigned long flags;
unsigned int val[2];
int cpu_num = raw_smp_processor_id();
struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
struct microcode_intel *mc_intel = uci->mc;
/* We should bind the task to the CPU */
BUG_ON(cpu_num != cpu);
if (mc_intel == NULL)
return;
/* serialize access to the physical write to MSR 0x79 */
spin_lock_irqsave(&microcode_update_lock, flags);
/* write microcode via MSR 0x79 */
wrmsr(MSR_IA32_UCODE_WRITE,
(unsigned long) mc_intel->bits,
(unsigned long) mc_intel->bits >> 16 >> 16);
wrmsr(MSR_IA32_UCODE_REV, 0, 0);
/* see notes above for revision 1.07. Apparent chip bug */
sync_core();
/* get the current revision from MSR 0x8B */
rdmsr(MSR_IA32_UCODE_REV, val[0], val[1]);
spin_unlock_irqrestore(&microcode_update_lock, flags);
if (val[1] != mc_intel->hdr.rev) {
printk(KERN_ERR "microcode: CPU%d update from revision "
"0x%x to 0x%x failed\n", cpu_num, uci->cpu_sig.rev, val[1]);
return;
}
printk(KERN_INFO "microcode: CPU%d updated from revision "
"0x%x to 0x%x, date = %04x-%02x-%02x \n",
cpu_num, uci->cpu_sig.rev, val[1],
mc_intel->hdr.date & 0xffff,
mc_intel->hdr.date >> 24,
(mc_intel->hdr.date >> 16) & 0xff);
uci->cpu_sig.rev = val[1];
}
static int generic_load_microcode(int cpu, void *data, size_t size,
int (*get_ucode_data)(void *, const void *, size_t))
{
struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
u8 *ucode_ptr = data, *new_mc = NULL, *mc;
int new_rev = uci->cpu_sig.rev;
unsigned int leftover = size;
while (leftover) {
struct microcode_header_intel mc_header;
unsigned int mc_size;
if (get_ucode_data(&mc_header, ucode_ptr, sizeof(mc_header)))
break;
mc_size = get_totalsize(&mc_header);
if (!mc_size || mc_size > leftover) {
printk(KERN_ERR "microcode: error!"
"Bad data in microcode data file\n");
break;
}
mc = vmalloc(mc_size);
if (!mc)
break;
if (get_ucode_data(mc, ucode_ptr, mc_size) ||
microcode_sanity_check(mc) < 0) {
vfree(mc);
break;
}
if (get_matching_microcode(&uci->cpu_sig, mc, new_rev)) {
if (new_mc)
vfree(new_mc);
new_rev = mc_header.rev;
new_mc = mc;
} else
vfree(mc);
ucode_ptr += mc_size;
leftover -= mc_size;
}
if (new_mc) {
if (!leftover) {
if (uci->mc)
vfree(uci->mc);
uci->mc = (struct microcode_intel *)new_mc;
pr_debug("microcode: CPU%d found a matching microcode update with"
" version 0x%x (current=0x%x)\n",
cpu, new_rev, uci->cpu_sig.rev);
} else
vfree(new_mc);
}
return (int)leftover;
}
static int get_ucode_fw(void *to, const void *from, size_t n)
{
memcpy(to, from, n);
return 0;
}
static int request_microcode_fw(int cpu, struct device *device)
{
char name[30];
struct cpuinfo_x86 *c = &cpu_data(cpu);
const struct firmware *firmware;
int ret;
/* We should bind the task to the CPU */
BUG_ON(cpu != raw_smp_processor_id());
sprintf(name, "intel-ucode/%02x-%02x-%02x",
c->x86, c->x86_model, c->x86_mask);
ret = request_firmware(&firmware, name, device);
if (ret) {
pr_debug("microcode: data file %s load failed\n", name);
return ret;
}
ret = generic_load_microcode(cpu, (void*)firmware->data, firmware->size,
&get_ucode_fw);
release_firmware(firmware);
return ret;
}
static int get_ucode_user(void *to, const void *from, size_t n)
{
return copy_from_user(to, from, n);
}
static int request_microcode_user(int cpu, const void __user *buf, size_t size)
{
/* We should bind the task to the CPU */
BUG_ON(cpu != raw_smp_processor_id());
return generic_load_microcode(cpu, (void*)buf, size, &get_ucode_user);
}
static void microcode_fini_cpu(int cpu)
{
struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
vfree(uci->mc);
uci->mc = NULL;
}
struct microcode_ops microcode_intel_ops = {
.request_microcode_user = request_microcode_user,
.request_microcode_fw = request_microcode_fw,
.collect_cpu_info = collect_cpu_info,
.apply_microcode = apply_microcode,
.microcode_fini_cpu = microcode_fini_cpu,
};
struct microcode_ops * __init init_intel_microcode(void)
{
return &microcode_intel_ops;
}
arch/x86/kernel/paravirt-spinlocks.c 0 → 100644
浏览文件 @ 807f4f8c
/*
* Split spinlock implementation out into its own file, so it can be
* compiled in a FTRACE-compatible way.
*/
#include <linux/spinlock.h>
#include <linux/module.h>
#include <asm/paravirt.h>
static void default_spin_lock_flags(struct raw_spinlock *lock, unsigned long flags)
{
__raw_spin_lock(lock);
}
struct pv_lock_ops pv_lock_ops = {
#ifdef CONFIG_SMP
.spin_is_locked = __ticket_spin_is_locked,
.spin_is_contended = __ticket_spin_is_contended,
.spin_lock = __ticket_spin_lock,
.spin_lock_flags = default_spin_lock_flags,
.spin_trylock = __ticket_spin_trylock,
.spin_unlock = __ticket_spin_unlock,
#endif
};
EXPORT_SYMBOL(pv_lock_ops);
void __init paravirt_use_bytelocks(void)
{
#ifdef CONFIG_SMP
pv_lock_ops.spin_is_locked = __byte_spin_is_locked;
pv_lock_ops.spin_is_contended = __byte_spin_is_contended;
pv_lock_ops.spin_lock = __byte_spin_lock;
pv_lock_ops.spin_trylock = __byte_spin_trylock;
pv_lock_ops.spin_unlock = __byte_spin_unlock;
#endif
}
arch/x86/kernel/paravirt.c
浏览文件 @ 807f4f8c
......@@ -268,17 +268,6 @@ enum paravirt_lazy_mode paravirt_get_lazy_mode(void)
return __get_cpu_var(paravirt_lazy_mode);
}
void __init paravirt_use_bytelocks(void)
{
#ifdef CONFIG_SMP
pv_lock_ops.spin_is_locked = __byte_spin_is_locked;
pv_lock_ops.spin_is_contended = __byte_spin_is_contended;
pv_lock_ops.spin_lock = __byte_spin_lock;
pv_lock_ops.spin_trylock = __byte_spin_trylock;
pv_lock_ops.spin_unlock = __byte_spin_unlock;
#endif
}
struct pv_info pv_info = {
.name = "bare hardware",
.paravirt_enabled = 0,
......@@ -349,6 +338,10 @@ struct pv_cpu_ops pv_cpu_ops = {
.write_ldt_entry = native_write_ldt_entry,
.write_gdt_entry = native_write_gdt_entry,
.write_idt_entry = native_write_idt_entry,
.alloc_ldt = paravirt_nop,
.free_ldt = paravirt_nop,
.load_sp0 = native_load_sp0,
#if defined(CONFIG_X86_32) || defined(CONFIG_IA32_EMULATION)
......@@ -460,18 +453,6 @@ struct pv_mmu_ops pv_mmu_ops = {
.set_fixmap = native_set_fixmap,
};
struct pv_lock_ops pv_lock_ops = {
#ifdef CONFIG_SMP
.spin_is_locked = __ticket_spin_is_locked,
.spin_is_contended = __ticket_spin_is_contended,
.spin_lock = __ticket_spin_lock,
.spin_trylock = __ticket_spin_trylock,
.spin_unlock = __ticket_spin_unlock,
#endif
};
EXPORT_SYMBOL(pv_lock_ops);
EXPORT_SYMBOL_GPL(pv_time_ops);
EXPORT_SYMBOL (pv_cpu_ops);
EXPORT_SYMBOL (pv_mmu_ops);
......
arch/x86/kernel/process_32.c
浏览文件 @ 807f4f8c
......@@ -76,47 +76,12 @@ unsigned long thread_saved_pc(struct task_struct *tsk)
return ((unsigned long *)tsk->thread.sp)[3];
}
#ifdef CONFIG_HOTPLUG_CPU
#include <asm/nmi.h>
static void cpu_exit_clear(void)
{
int cpu = raw_smp_processor_id();
idle_task_exit();
cpu_uninit();
irq_ctx_exit(cpu);
cpu_clear(cpu, cpu_callout_map);
cpu_clear(cpu, cpu_callin_map);
numa_remove_cpu(cpu);
c1e_remove_cpu(cpu);
}
/* We don't actually take CPU down, just spin without interrupts. */
static inline void play_dead(void)
{
/* This must be done before dead CPU ack */
cpu_exit_clear();
mb();
/* Ack it */
__get_cpu_var(cpu_state) = CPU_DEAD;
/*
* With physical CPU hotplug, we should halt the cpu
*/
local_irq_disable();
/* mask all interrupts, flush any and all caches, and halt */
wbinvd_halt();
}
#else
#ifndef CONFIG_SMP
static inline void play_dead(void)
{
BUG();
}
#endif /* CONFIG_HOTPLUG_CPU */
#endif
/*
* The idle thread. There's no useful work to be
......
arch/x86/kernel/process_64.c
浏览文件 @ 807f4f8c
......@@ -86,30 +86,12 @@ void exit_idle(void)
__exit_idle();
}
#ifdef CONFIG_HOTPLUG_CPU
DECLARE_PER_CPU(int, cpu_state);
#include <linux/nmi.h>
/* We halt the CPU with physical CPU hotplug */
static inline void play_dead(void)
{
idle_task_exit();
c1e_remove_cpu(raw_smp_processor_id());
mb();
/* Ack it */
__get_cpu_var(cpu_state) = CPU_DEAD;
local_irq_disable();
/* mask all interrupts, flush any and all caches, and halt */
wbinvd_halt();
}
#else
#ifndef CONFIG_SMP
static inline void play_dead(void)
{
BUG();
}
#endif /* CONFIG_HOTPLUG_CPU */
#endif
/*
* The idle thread. There's no useful work to be
......
arch/x86/kernel/ptrace.c
浏览文件 @ 807f4f8c
......@@ -40,7 +40,9 @@ enum x86_regset {
REGSET_GENERAL,
REGSET_FP,
REGSET_XFP,
REGSET_IOPERM64 = REGSET_XFP,
REGSET_TLS,
REGSET_IOPERM32,
};
/*
......@@ -555,6 +557,29 @@ static int ptrace_set_debugreg(struct task_struct *child,
return 0;
}
/*
* These access the current or another (stopped) task's io permission
* bitmap for debugging or core dump.
*/
static int ioperm_active(struct task_struct *target,
const struct user_regset *regset)
{
return target->thread.io_bitmap_max / regset->size;
}
static int ioperm_get(struct task_struct *target,
const struct user_regset *regset,
unsigned int pos, unsigned int count,
void *kbuf, void __user *ubuf)
{
if (!target->thread.io_bitmap_ptr)
return -ENXIO;
return user_regset_copyout(&pos, &count, &kbuf, &ubuf,
target->thread.io_bitmap_ptr,
0, IO_BITMAP_BYTES);
}
#ifdef CONFIG_X86_PTRACE_BTS
/*
* The configuration for a particular BTS hardware implementation.
......@@ -1385,6 +1410,12 @@ static const struct user_regset x86_64_regsets[] = {
.size = sizeof(long), .align = sizeof(long),
.active = xfpregs_active, .get = xfpregs_get, .set = xfpregs_set
},
[REGSET_IOPERM64] = {
.core_note_type = NT_386_IOPERM,
.n = IO_BITMAP_LONGS,
.size = sizeof(long), .align = sizeof(long),
.active = ioperm_active, .get = ioperm_get
},
};
static const struct user_regset_view user_x86_64_view = {
......@@ -1431,6 +1462,12 @@ static const struct user_regset x86_32_regsets[] = {
.active = regset_tls_active,
.get = regset_tls_get, .set = regset_tls_set
},
[REGSET_IOPERM32] = {
.core_note_type = NT_386_IOPERM,
.n = IO_BITMAP_BYTES / sizeof(u32),
.size = sizeof(u32), .align = sizeof(u32),
.active = ioperm_active, .get = ioperm_get
},
};
static const struct user_regset_view user_x86_32_view = {
......@@ -1452,7 +1489,8 @@ const struct user_regset_view *task_user_regset_view(struct task_struct *task)
#endif
}
void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs, int error_code)
void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs,
int error_code, int si_code)
{
struct siginfo info;
......@@ -1461,7 +1499,7 @@ void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs, int error_code)
memset(&info, 0, sizeof(info));
info.si_signo = SIGTRAP;
info.si_code = TRAP_BRKPT;
info.si_code = si_code;
/* User-mode ip? */
info.si_addr = user_mode_vm(regs) ? (void __user *) regs->ip : NULL;
......@@ -1548,5 +1586,5 @@ asmregparm void syscall_trace_leave(struct pt_regs *regs)
*/
if (test_thread_flag(TIF_SINGLESTEP) &&
tracehook_consider_fatal_signal(current, SIGTRAP, SIG_DFL))
send_sigtrap(current, regs, 0);
send_sigtrap(current, regs, 0, TRAP_BRKPT);
}
arch/x86/kernel/setup.c
浏览文件 @ 807f4f8c
......@@ -581,6 +581,190 @@ static struct x86_quirks default_x86_quirks __initdata;
struct x86_quirks *x86_quirks __initdata = &default_x86_quirks;
/*
* Some BIOSes seem to corrupt the low 64k of memory during events
* like suspend/resume and unplugging an HDMI cable. Reserve all
* remaining free memory in that area and fill it with a distinct
* pattern.
*/
#ifdef CONFIG_X86_CHECK_BIOS_CORRUPTION
#define MAX_SCAN_AREAS 8
static int __read_mostly memory_corruption_check = -1;
static unsigned __read_mostly corruption_check_size = 64*1024;
static unsigned __read_mostly corruption_check_period = 60; /* seconds */
static struct e820entry scan_areas[MAX_SCAN_AREAS];
static int num_scan_areas;
static int set_corruption_check(char *arg)
{
char *end;
memory_corruption_check = simple_strtol(arg, &end, 10);
return (*end == 0) ? 0 : -EINVAL;
}
early_param("memory_corruption_check", set_corruption_check);
static int set_corruption_check_period(char *arg)
{
char *end;
corruption_check_period = simple_strtoul(arg, &end, 10);
return (*end == 0) ? 0 : -EINVAL;
}
early_param("memory_corruption_check_period", set_corruption_check_period);
static int set_corruption_check_size(char *arg)
{
char *end;
unsigned size;
size = memparse(arg, &end);
if (*end == '\0')
corruption_check_size = size;
return (size == corruption_check_size) ? 0 : -EINVAL;
}
early_param("memory_corruption_check_size", set_corruption_check_size);
static void __init setup_bios_corruption_check(void)
{
u64 addr = PAGE_SIZE; /* assume first page is reserved anyway */
if (memory_corruption_check == -1) {
memory_corruption_check =
#ifdef CONFIG_X86_BOOTPARAM_MEMORY_CORRUPTION_CHECK
1
#else
0
#endif
;
}
if (corruption_check_size == 0)
memory_corruption_check = 0;
if (!memory_corruption_check)
return;
corruption_check_size = round_up(corruption_check_size, PAGE_SIZE);
while(addr < corruption_check_size && num_scan_areas < MAX_SCAN_AREAS) {
u64 size;
addr = find_e820_area_size(addr, &size, PAGE_SIZE);
if (addr == 0)
break;
if ((addr + size) > corruption_check_size)
size = corruption_check_size - addr;
if (size == 0)
break;
e820_update_range(addr, size, E820_RAM, E820_RESERVED);
scan_areas[num_scan_areas].addr = addr;
scan_areas[num_scan_areas].size = size;
num_scan_areas++;
/* Assume we've already mapped this early memory */
memset(__va(addr), 0, size);
addr += size;
}
printk(KERN_INFO "Scanning %d areas for low memory corruption\n",
num_scan_areas);
update_e820();
}
static struct timer_list periodic_check_timer;
void check_for_bios_corruption(void)
{
int i;
int corruption = 0;
if (!memory_corruption_check)
return;
for(i = 0; i < num_scan_areas; i++) {
unsigned long *addr = __va(scan_areas[i].addr);
unsigned long size = scan_areas[i].size;
for(; size; addr++, size -= sizeof(unsigned long)) {
if (!*addr)
continue;
printk(KERN_ERR "Corrupted low memory at %p (%lx phys) = %08lx\n",
addr, __pa(addr), *addr);
corruption = 1;
*addr = 0;
}
}
WARN(corruption, KERN_ERR "Memory corruption detected in low memory\n");
}
static void periodic_check_for_corruption(unsigned long data)
{
check_for_bios_corruption();
mod_timer(&periodic_check_timer, round_jiffies(jiffies + corruption_check_period*HZ));
}
void start_periodic_check_for_corruption(void)
{
if (!memory_corruption_check || corruption_check_period == 0)
return;
printk(KERN_INFO "Scanning for low memory corruption every %d seconds\n",
corruption_check_period);
init_timer(&periodic_check_timer);
periodic_check_timer.function = &periodic_check_for_corruption;
periodic_check_for_corruption(0);
}
#endif
static int __init dmi_low_memory_corruption(const struct dmi_system_id *d)
{
printk(KERN_NOTICE
"%s detected: BIOS may corrupt low RAM, working it around.\n",
d->ident);
e820_update_range(0, 0x10000, E820_RAM, E820_RESERVED);
sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
return 0;
}
/* List of systems that have known low memory corruption BIOS problems */
static struct dmi_system_id __initdata bad_bios_dmi_table[] = {
#ifdef CONFIG_X86_RESERVE_LOW_64K
{
.callback = dmi_low_memory_corruption,
.ident = "AMI BIOS",
.matches = {
DMI_MATCH(DMI_BIOS_VENDOR, "American Megatrends Inc."),
},
},
{
.callback = dmi_low_memory_corruption,
.ident = "Phoenix BIOS",
.matches = {
DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies, LTD"),
},
},
#endif
{}
};
/*
* Determine if we were loaded by an EFI loader. If so, then we have also been
* passed the efi memmap, systab, etc., so we should use these data structures
......@@ -715,6 +899,10 @@ void __init setup_arch(char **cmdline_p)
finish_e820_parsing();
dmi_scan_machine();
dmi_check_system(bad_bios_dmi_table);
#ifdef CONFIG_X86_32
probe_roms();
#endif
......@@ -771,6 +959,10 @@ void __init setup_arch(char **cmdline_p)
high_memory = (void *)__va(max_pfn * PAGE_SIZE - 1) + 1;
#endif
#ifdef CONFIG_X86_CHECK_BIOS_CORRUPTION
setup_bios_corruption_check();
#endif
/* max_pfn_mapped is updated here */
max_low_pfn_mapped = init_memory_mapping(0, max_low_pfn<<PAGE_SHIFT);
max_pfn_mapped = max_low_pfn_mapped;
......@@ -799,8 +991,6 @@ void __init setup_arch(char **cmdline_p)
vsmp_init();
#endif
dmi_scan_machine();
io_delay_init();
/*
......@@ -903,3 +1093,5 @@ void __init setup_arch(char **cmdline_p)
#endif
#endif
}
arch/x86/kernel/signal_32.c
浏览文件 @ 807f4f8c
......@@ -27,6 +27,7 @@
#include <asm/uaccess.h>
#include <asm/i387.h>
#include <asm/vdso.h>
#include <asm/syscall.h>
#include <asm/syscalls.h>
#include "sigframe.h"
......@@ -112,6 +113,27 @@ asmlinkage int sys_sigaltstack(unsigned long bx)
return do_sigaltstack(uss, uoss, regs->sp);
}
#define COPY(x) { \
err |= __get_user(regs->x, &sc->x); \
}
#define COPY_SEG(seg) { \
unsigned short tmp; \
err |= __get_user(tmp, &sc->seg); \
regs->seg = tmp; \
}
#define COPY_SEG_STRICT(seg) { \
unsigned short tmp; \
err |= __get_user(tmp, &sc->seg); \
regs->seg = tmp | 3; \
}
#define GET_SEG(seg) { \
unsigned short tmp; \
err |= __get_user(tmp, &sc->seg); \
loadsegment(seg, tmp); \
}
/*
* Do a signal return; undo the signal stack.
......@@ -120,28 +142,13 @@ static int
restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc,
unsigned long *pax)
{
void __user *buf;
unsigned int tmpflags;
unsigned int err = 0;
/* Always make any pending restarted system calls return -EINTR */
current_thread_info()->restart_block.fn = do_no_restart_syscall;
#define COPY(x) err |= __get_user(regs->x, &sc->x)
#define COPY_SEG(seg) \
{ unsigned short tmp; \
err |= __get_user(tmp, &sc->seg); \
regs->seg = tmp; }
#define COPY_SEG_STRICT(seg) \
{ unsigned short tmp; \
err |= __get_user(tmp, &sc->seg); \
regs->seg = tmp|3; }
#define GET_SEG(seg) \
{ unsigned short tmp; \
err |= __get_user(tmp, &sc->seg); \
loadsegment(seg, tmp); }
GET_SEG(gs);
COPY_SEG(fs);
COPY_SEG(es);
......@@ -151,21 +158,12 @@ restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc,
COPY_SEG_STRICT(cs);
COPY_SEG_STRICT(ss);
{
unsigned int tmpflags;
err |= __get_user(tmpflags, &sc->flags);
regs->flags = (regs->flags & ~FIX_EFLAGS) |
(tmpflags & FIX_EFLAGS);
regs->orig_ax = -1; /* disable syscall checks */
}
{
void __user *buf;
err |= __get_user(tmpflags, &sc->flags);
regs->flags = (regs->flags & ~FIX_EFLAGS) | (tmpflags & FIX_EFLAGS);
regs->orig_ax = -1; /* disable syscall checks */
err |= __get_user(buf, &sc->fpstate);
err |= restore_i387_xstate(buf);
}
err |= __get_user(buf, &sc->fpstate);
err |= restore_i387_xstate(buf);
err |= __get_user(*pax, &sc->ax);
return err;
......@@ -214,9 +212,8 @@ asmlinkage unsigned long sys_sigreturn(unsigned long __unused)
return 0;
}
asmlinkage int sys_rt_sigreturn(unsigned long __unused)
static long do_rt_sigreturn(struct pt_regs *regs)
{
struct pt_regs *regs = (struct pt_regs *)&__unused;
struct rt_sigframe __user *frame;
unsigned long ax;
sigset_t set;
......@@ -242,10 +239,17 @@ asmlinkage int sys_rt_sigreturn(unsigned long __unused)
return ax;
badframe:
force_sig(SIGSEGV, current);
signal_fault(regs, frame, "rt_sigreturn");
return 0;
}
asmlinkage int sys_rt_sigreturn(unsigned long __unused)
{
struct pt_regs *regs = (struct pt_regs *)&__unused;
return do_rt_sigreturn(regs);
}
/*
* Set up a signal frame.
*/
......@@ -337,39 +341,29 @@ get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size,
}
static int
setup_frame(int sig, struct k_sigaction *ka, sigset_t *set,
struct pt_regs *regs)
__setup_frame(int sig, struct k_sigaction *ka, sigset_t *set,
struct pt_regs *regs)
{
struct sigframe __user *frame;
void __user *restorer;
int err = 0;
int usig;
void __user *fpstate = NULL;
frame = get_sigframe(ka, regs, sizeof(*frame), &fpstate);
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
goto give_sigsegv;
return -EFAULT;
usig = current_thread_info()->exec_domain
&& current_thread_info()->exec_domain->signal_invmap
&& sig < 32
? current_thread_info()->exec_domain->signal_invmap[sig]
: sig;
if (__put_user(sig, &frame->sig))
return -EFAULT;
err = __put_user(usig, &frame->sig);
if (err)
goto give_sigsegv;
err = setup_sigcontext(&frame->sc, fpstate, regs, set->sig[0]);
if (err)
goto give_sigsegv;
if (setup_sigcontext(&frame->sc, fpstate, regs, set->sig[0]))
return -EFAULT;
if (_NSIG_WORDS > 1) {
err = __copy_to_user(&frame->extramask, &set->sig[1],
sizeof(frame->extramask));
if (err)
goto give_sigsegv;
if (__copy_to_user(&frame->extramask, &set->sig[1],
sizeof(frame->extramask)))
return -EFAULT;
}
if (current->mm->context.vdso)
......@@ -394,7 +388,7 @@ setup_frame(int sig, struct k_sigaction *ka, sigset_t *set,
err |= __put_user(0x80cd, (short __user *)(frame->retcode+6));
if (err)
goto give_sigsegv;
return -EFAULT;
/* Set up registers for signal handler */
regs->sp = (unsigned long)frame;
......@@ -409,38 +403,27 @@ setup_frame(int sig, struct k_sigaction *ka, sigset_t *set,
regs->cs = __USER_CS;
return 0;
give_sigsegv:
force_sigsegv(sig, current);
return -EFAULT;
}
static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
sigset_t *set, struct pt_regs *regs)
static int __setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
sigset_t *set, struct pt_regs *regs)
{
struct rt_sigframe __user *frame;
void __user *restorer;
int err = 0;
int usig;
void __user *fpstate = NULL;
frame = get_sigframe(ka, regs, sizeof(*frame), &fpstate);
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
goto give_sigsegv;
usig = current_thread_info()->exec_domain
&& current_thread_info()->exec_domain->signal_invmap
&& sig < 32
? current_thread_info()->exec_domain->signal_invmap[sig]
: sig;
return -EFAULT;
err |= __put_user(usig, &frame->sig);
err |= __put_user(sig, &frame->sig);
err |= __put_user(&frame->info, &frame->pinfo);
err |= __put_user(&frame->uc, &frame->puc);
err |= copy_siginfo_to_user(&frame->info, info);
if (err)
goto give_sigsegv;
return -EFAULT;
/* Create the ucontext. */
if (cpu_has_xsave)
......@@ -456,7 +439,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
regs, set->sig[0]);
err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
if (err)
goto give_sigsegv;
return -EFAULT;
/* Set up to return from userspace. */
restorer = VDSO32_SYMBOL(current->mm->context.vdso, rt_sigreturn);
......@@ -476,12 +459,12 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
err |= __put_user(0x80cd, (short __user *)(frame->retcode+5));
if (err)
goto give_sigsegv;
return -EFAULT;
/* Set up registers for signal handler */
regs->sp = (unsigned long)frame;
regs->ip = (unsigned long)ka->sa.sa_handler;
regs->ax = (unsigned long)usig;
regs->ax = (unsigned long)sig;
regs->dx = (unsigned long)&frame->info;
regs->cx = (unsigned long)&frame->uc;
......@@ -491,15 +474,48 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
regs->cs = __USER_CS;
return 0;
give_sigsegv:
force_sigsegv(sig, current);
return -EFAULT;
}
/*
* OK, we're invoking a handler:
*/
static int signr_convert(int sig)
{
struct thread_info *info = current_thread_info();
if (info->exec_domain && info->exec_domain->signal_invmap && sig < 32)
return info->exec_domain->signal_invmap[sig];
return sig;
}
#define is_ia32 1
#define ia32_setup_frame __setup_frame
#define ia32_setup_rt_frame __setup_rt_frame
static int
setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
sigset_t *set, struct pt_regs *regs)
{
int usig = signr_convert(sig);
int ret;
/* Set up the stack frame */
if (is_ia32) {
if (ka->sa.sa_flags & SA_SIGINFO)
ret = ia32_setup_rt_frame(usig, ka, info, set, regs);
else
ret = ia32_setup_frame(usig, ka, set, regs);
} else
ret = __setup_rt_frame(sig, ka, info, set, regs);
if (ret) {
force_sigsegv(sig, current);
return -EFAULT;
}
return ret;
}
static int
handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
sigset_t *oldset, struct pt_regs *regs)
......@@ -507,9 +523,9 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
int ret;
/* Are we from a system call? */
if ((long)regs->orig_ax >= 0) {
if (syscall_get_nr(current, regs) >= 0) {
/* If so, check system call restarting.. */
switch (regs->ax) {
switch (syscall_get_error(current, regs)) {
case -ERESTART_RESTARTBLOCK:
case -ERESTARTNOHAND:
regs->ax = -EINTR;
......@@ -536,15 +552,20 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
likely(test_and_clear_thread_flag(TIF_FORCED_TF)))
regs->flags &= ~X86_EFLAGS_TF;
/* Set up the stack frame */
if (ka->sa.sa_flags & SA_SIGINFO)
ret = setup_rt_frame(sig, ka, info, oldset, regs);
else
ret = setup_frame(sig, ka, oldset, regs);
ret = setup_rt_frame(sig, ka, info, oldset, regs);
if (ret)
return ret;
#ifdef CONFIG_X86_64
/*
* This has nothing to do with segment registers,
* despite the name. This magic affects uaccess.h
* macros' behavior. Reset it to the normal setting.
*/
set_fs(USER_DS);
#endif
/*
* Clear the direction flag as per the ABI for function entry.
*/
......@@ -571,6 +592,7 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
return 0;
}
#define NR_restart_syscall __NR_restart_syscall
/*
* Note that 'init' is a special process: it doesn't get signals it doesn't
* want to handle. Thus you cannot kill init even with a SIGKILL even by
......@@ -623,9 +645,9 @@ static void do_signal(struct pt_regs *regs)
}
/* Did we come from a system call? */
if ((long)regs->orig_ax >= 0) {
if (syscall_get_nr(current, regs) >= 0) {
/* Restart the system call - no handlers present */
switch (regs->ax) {
switch (syscall_get_error(current, regs)) {
case -ERESTARTNOHAND:
case -ERESTARTSYS:
case -ERESTARTNOINTR:
......@@ -634,7 +656,7 @@ static void do_signal(struct pt_regs *regs)
break;
case -ERESTART_RESTARTBLOCK:
regs->ax = __NR_restart_syscall;
regs->ax = NR_restart_syscall;
regs->ip -= 2;
break;
}
......@@ -657,6 +679,12 @@ static void do_signal(struct pt_regs *regs)
void
do_notify_resume(struct pt_regs *regs, void *unused, __u32 thread_info_flags)
{
#if defined(CONFIG_X86_64) && defined(CONFIG_X86_MCE)
/* notify userspace of pending MCEs */
if (thread_info_flags & _TIF_MCE_NOTIFY)
mce_notify_user();
#endif /* CONFIG_X86_64 && CONFIG_X86_MCE */
/* deal with pending signal delivery */
if (thread_info_flags & _TIF_SIGPENDING)
do_signal(regs);
......@@ -666,5 +694,23 @@ do_notify_resume(struct pt_regs *regs, void *unused, __u32 thread_info_flags)
tracehook_notify_resume(regs);
}
#ifdef CONFIG_X86_32
clear_thread_flag(TIF_IRET);
#endif /* CONFIG_X86_32 */
}
void signal_fault(struct pt_regs *regs, void __user *frame, char *where)
{
struct task_struct *me = current;
if (show_unhandled_signals && printk_ratelimit()) {
printk(KERN_INFO
"%s[%d] bad frame in %s frame:%p ip:%lx sp:%lx orax:%lx",
me->comm, me->pid, where, frame,
regs->ip, regs->sp, regs->orig_ax);
print_vma_addr(" in ", regs->ip);
printk(KERN_CONT "\n");
}
force_sig(SIGSEGV, me);
}
arch/x86/kernel/signal_64.c
浏览文件 @ 807f4f8c
......@@ -52,6 +52,16 @@ sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss,
return do_sigaltstack(uss, uoss, regs->sp);
}
#define COPY(x) { \
err |= __get_user(regs->x, &sc->x); \
}
#define COPY_SEG_STRICT(seg) { \
unsigned short tmp; \
err |= __get_user(tmp, &sc->seg); \
regs->seg = tmp | 3; \
}
/*
* Do a signal return; undo the signal stack.
*/
......@@ -59,13 +69,13 @@ static int
restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc,
unsigned long *pax)
{
void __user *buf;
unsigned int tmpflags;
unsigned int err = 0;
/* Always make any pending restarted system calls return -EINTR */
current_thread_info()->restart_block.fn = do_no_restart_syscall;
#define COPY(x) (err |= __get_user(regs->x, &sc->x))
COPY(di); COPY(si); COPY(bp); COPY(sp); COPY(bx);
COPY(dx); COPY(cx); COPY(ip);
COPY(r8);
......@@ -80,34 +90,24 @@ restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc,
/* Kernel saves and restores only the CS segment register on signals,
* which is the bare minimum needed to allow mixed 32/64-bit code.
* App's signal handler can save/restore other segments if needed. */
{
unsigned cs;
err |= __get_user(cs, &sc->cs);
regs->cs = cs | 3; /* Force into user mode */
}
COPY_SEG_STRICT(cs);
{
unsigned int tmpflags;
err |= __get_user(tmpflags, &sc->flags);
regs->flags = (regs->flags & ~FIX_EFLAGS) | (tmpflags & FIX_EFLAGS);
regs->orig_ax = -1; /* disable syscall checks */
}
err |= __get_user(tmpflags, &sc->flags);
regs->flags = (regs->flags & ~FIX_EFLAGS) | (tmpflags & FIX_EFLAGS);
regs->orig_ax = -1; /* disable syscall checks */
{
struct _fpstate __user *buf;
err |= __get_user(buf, &sc->fpstate);
err |= restore_i387_xstate(buf);
}
err |= __get_user(buf, &sc->fpstate);
err |= restore_i387_xstate(buf);
err |= __get_user(*pax, &sc->ax);
return err;
}
asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)
static long do_rt_sigreturn(struct pt_regs *regs)
{
struct rt_sigframe __user *frame;
sigset_t set;
unsigned long ax;
sigset_t set;
frame = (struct rt_sigframe __user *)(regs->sp - sizeof(long));
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
......@@ -130,10 +130,15 @@ asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)
return ax;
badframe:
signal_fault(regs, frame, "sigreturn");
signal_fault(regs, frame, "rt_sigreturn");
return 0;
}
asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)
{
return do_rt_sigreturn(regs);
}
/*
* Set up a signal frame.
*/
......@@ -195,8 +200,8 @@ get_stack(struct k_sigaction *ka, struct pt_regs *regs, unsigned long size)
return (void __user *)round_down(sp - size, 64);
}
static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
sigset_t *set, struct pt_regs *regs)
static int __setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
sigset_t *set, struct pt_regs *regs)
{
struct rt_sigframe __user *frame;
void __user *fp = NULL;
......@@ -209,17 +214,16 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
(unsigned long)fp - sizeof(struct rt_sigframe), 16) - 8;
if (save_i387_xstate(fp) < 0)
err |= -1;
return -EFAULT;
} else
frame = get_stack(ka, regs, sizeof(struct rt_sigframe)) - 8;
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
goto give_sigsegv;
return -EFAULT;
if (ka->sa.sa_flags & SA_SIGINFO) {
err |= copy_siginfo_to_user(&frame->info, info);
if (err)
goto give_sigsegv;
if (copy_siginfo_to_user(&frame->info, info))
return -EFAULT;
}
/* Create the ucontext. */
......@@ -247,11 +251,11 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
err |= __put_user(ka->sa.sa_restorer, &frame->pretcode);
} else {
/* could use a vstub here */
goto give_sigsegv;
return -EFAULT;
}
if (err)
goto give_sigsegv;
return -EFAULT;
/* Set up registers for signal handler */
regs->di = sig;
......@@ -271,15 +275,45 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
regs->cs = __USER_CS;
return 0;
give_sigsegv:
force_sigsegv(sig, current);
return -EFAULT;
}
/*
* OK, we're invoking a handler
*/
static int signr_convert(int sig)
{
return sig;
}
#ifdef CONFIG_IA32_EMULATION
#define is_ia32 test_thread_flag(TIF_IA32)
#else
#define is_ia32 0
#endif
static int
setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
sigset_t *set, struct pt_regs *regs)
{
int usig = signr_convert(sig);
int ret;
/* Set up the stack frame */
if (is_ia32) {
if (ka->sa.sa_flags & SA_SIGINFO)
ret = ia32_setup_rt_frame(usig, ka, info, set, regs);
else
ret = ia32_setup_frame(usig, ka, set, regs);
} else
ret = __setup_rt_frame(sig, ka, info, set, regs);
if (ret) {
force_sigsegv(sig, current);
return -EFAULT;
}
return ret;
}
static int
handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
......@@ -317,51 +351,48 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
likely(test_and_clear_thread_flag(TIF_FORCED_TF)))
regs->flags &= ~X86_EFLAGS_TF;
#ifdef CONFIG_IA32_EMULATION
if (test_thread_flag(TIF_IA32)) {
if (ka->sa.sa_flags & SA_SIGINFO)
ret = ia32_setup_rt_frame(sig, ka, info, oldset, regs);
else
ret = ia32_setup_frame(sig, ka, oldset, regs);
} else
#endif
ret = setup_rt_frame(sig, ka, info, oldset, regs);
if (ret == 0) {
/*
* This has nothing to do with segment registers,
* despite the name. This magic affects uaccess.h
* macros' behavior. Reset it to the normal setting.
*/
set_fs(USER_DS);
if (ret)
return ret;
/*
* Clear the direction flag as per the ABI for function entry.
*/
regs->flags &= ~X86_EFLAGS_DF;
#ifdef CONFIG_X86_64
/*
* This has nothing to do with segment registers,
* despite the name. This magic affects uaccess.h
* macros' behavior. Reset it to the normal setting.
*/
set_fs(USER_DS);
#endif
/*
* Clear TF when entering the signal handler, but
* notify any tracer that was single-stepping it.
* The tracer may want to single-step inside the
* handler too.
*/
regs->flags &= ~X86_EFLAGS_TF;
/*
* Clear the direction flag as per the ABI for function entry.
*/
regs->flags &= ~X86_EFLAGS_DF;
spin_lock_irq(&current->sighand->siglock);
sigorsets(&current->blocked, &current->blocked, &ka->sa.sa_mask);
if (!(ka->sa.sa_flags & SA_NODEFER))
sigaddset(&current->blocked, sig);
recalc_sigpending();
spin_unlock_irq(&current->sighand->siglock);
/*
* Clear TF when entering the signal handler, but
* notify any tracer that was single-stepping it.
* The tracer may want to single-step inside the
* handler too.
*/
regs->flags &= ~X86_EFLAGS_TF;
tracehook_signal_handler(sig, info, ka, regs,
test_thread_flag(TIF_SINGLESTEP));
}
spin_lock_irq(&current->sighand->siglock);
sigorsets(&current->blocked, &current->blocked, &ka->sa.sa_mask);
if (!(ka->sa.sa_flags & SA_NODEFER))
sigaddset(&current->blocked, sig);
recalc_sigpending();
spin_unlock_irq(&current->sighand->siglock);
return ret;
tracehook_signal_handler(sig, info, ka, regs,
test_thread_flag(TIF_SINGLESTEP));
return 0;
}
#define NR_restart_syscall \
test_thread_flag(TIF_IA32) ? __NR_ia32_restart_syscall : __NR_restart_syscall
/*
* Note that 'init' is a special process: it doesn't get signals it doesn't
* want to handle. Thus you cannot kill init even with a SIGKILL even by
......@@ -391,7 +422,8 @@ static void do_signal(struct pt_regs *regs)
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
if (signr > 0) {
/* Re-enable any watchpoints before delivering the
/*
* Re-enable any watchpoints before delivering the
* signal to user space. The processor register will
* have been cleared if the watchpoint triggered
* inside the kernel.
......@@ -399,7 +431,7 @@ static void do_signal(struct pt_regs *regs)
if (current->thread.debugreg7)
set_debugreg(current->thread.debugreg7, 7);
/* Whee! Actually deliver the signal. */
/* Whee! Actually deliver the signal. */
if (handle_signal(signr, &info, &ka, oldset, regs) == 0) {
/*
* A signal was successfully delivered; the saved
......@@ -422,10 +454,9 @@ static void do_signal(struct pt_regs *regs)
regs->ax = regs->orig_ax;
regs->ip -= 2;
break;
case -ERESTART_RESTARTBLOCK:
regs->ax = test_thread_flag(TIF_IA32) ?
__NR_ia32_restart_syscall :
__NR_restart_syscall;
regs->ax = NR_restart_syscall;
regs->ip -= 2;
break;
}
......@@ -441,14 +472,18 @@ static void do_signal(struct pt_regs *regs)
}
}
void do_notify_resume(struct pt_regs *regs, void *unused,
__u32 thread_info_flags)
/*
* notification of userspace execution resumption
* - triggered by the TIF_WORK_MASK flags
*/
void
do_notify_resume(struct pt_regs *regs, void *unused, __u32 thread_info_flags)
{
#ifdef CONFIG_X86_MCE
#if defined(CONFIG_X86_64) && defined(CONFIG_X86_MCE)
/* notify userspace of pending MCEs */
if (thread_info_flags & _TIF_MCE_NOTIFY)
mce_notify_user();
#endif /* CONFIG_X86_MCE */
#endif /* CONFIG_X86_64 && CONFIG_X86_MCE */
/* deal with pending signal delivery */
if (thread_info_flags & _TIF_SIGPENDING)
......@@ -458,17 +493,23 @@ void do_notify_resume(struct pt_regs *regs, void *unused,
clear_thread_flag(TIF_NOTIFY_RESUME);
tracehook_notify_resume(regs);
}
#ifdef CONFIG_X86_32
clear_thread_flag(TIF_IRET);
#endif /* CONFIG_X86_32 */
}
void signal_fault(struct pt_regs *regs, void __user *frame, char *where)
{
struct task_struct *me = current;
if (show_unhandled_signals && printk_ratelimit()) {
printk("%s[%d] bad frame in %s frame:%p ip:%lx sp:%lx orax:%lx",
me->comm, me->pid, where, frame, regs->ip,
regs->sp, regs->orig_ax);
printk(KERN_INFO
"%s[%d] bad frame in %s frame:%p ip:%lx sp:%lx orax:%lx",
me->comm, me->pid, where, frame,
regs->ip, regs->sp, regs->orig_ax);
print_vma_addr(" in ", regs->ip);
printk("\n");
printk(KERN_CONT "\n");
}
force_sig(SIGSEGV, me);
......
arch/x86/kernel/smp.c
浏览文件 @ 807f4f8c
......@@ -214,12 +214,16 @@ void smp_call_function_single_interrupt(struct pt_regs *regs)
struct smp_ops smp_ops = {
.smp_prepare_boot_cpu = native_smp_prepare_boot_cpu,
.smp_prepare_cpus = native_smp_prepare_cpus,
.cpu_up = native_cpu_up,
.smp_cpus_done = native_smp_cpus_done,
.smp_send_stop = native_smp_send_stop,
.smp_send_reschedule = native_smp_send_reschedule,
.cpu_up = native_cpu_up,
.cpu_die = native_cpu_die,
.cpu_disable = native_cpu_disable,
.play_dead = native_play_dead,
.send_call_func_ipi = native_send_call_func_ipi,
.send_call_func_single_ipi = native_send_call_func_single_ipi,
};
......
arch/x86/kernel/smpboot.c
浏览文件 @ 807f4f8c
......@@ -52,6 +52,7 @@
#include <asm/desc.h>
#include <asm/nmi.h>
#include <asm/irq.h>
#include <asm/idle.h>
#include <asm/smp.h>
#include <asm/trampoline.h>
#include <asm/cpu.h>
......@@ -1344,25 +1345,9 @@ static void __ref remove_cpu_from_maps(int cpu)
numa_remove_cpu(cpu);
}
int __cpu_disable(void)
void cpu_disable_common(void)
{
int cpu = smp_processor_id();
/*
* Perhaps use cpufreq to drop frequency, but that could go
* into generic code.
*
* We won't take down the boot processor on i386 due to some
* interrupts only being able to be serviced by the BSP.
* Especially so if we're not using an IOAPIC -zwane
*/
if (cpu == 0)
return -EBUSY;
if (nmi_watchdog == NMI_LOCAL_APIC)
stop_apic_nmi_watchdog(NULL);
clear_local_APIC();
/*
* HACK:
* Allow any queued timer interrupts to get serviced
......@@ -1380,10 +1365,32 @@ int __cpu_disable(void)
remove_cpu_from_maps(cpu);
unlock_vector_lock();
fixup_irqs(cpu_online_map);
}
int native_cpu_disable(void)
{
int cpu = smp_processor_id();
/*
* Perhaps use cpufreq to drop frequency, but that could go
* into generic code.
*
* We won't take down the boot processor on i386 due to some
* interrupts only being able to be serviced by the BSP.
* Especially so if we're not using an IOAPIC -zwane
*/
if (cpu == 0)
return -EBUSY;
if (nmi_watchdog == NMI_LOCAL_APIC)
stop_apic_nmi_watchdog(NULL);
clear_local_APIC();
cpu_disable_common();
return 0;
}
void __cpu_die(unsigned int cpu)
void native_cpu_die(unsigned int cpu)
{
/* We don't do anything here: idle task is faking death itself. */
unsigned int i;
......@@ -1400,15 +1407,45 @@ void __cpu_die(unsigned int cpu)
}
printk(KERN_ERR "CPU %u didn't die...\n", cpu);
}
void play_dead_common(void)
{
idle_task_exit();
reset_lazy_tlbstate();
irq_ctx_exit(raw_smp_processor_id());
c1e_remove_cpu(raw_smp_processor_id());
mb();
/* Ack it */
__get_cpu_var(cpu_state) = CPU_DEAD;
/*
* With physical CPU hotplug, we should halt the cpu
*/
local_irq_disable();
}
void native_play_dead(void)
{
play_dead_common();
wbinvd_halt();
}
#else /* ... !CONFIG_HOTPLUG_CPU */
int __cpu_disable(void)
int native_cpu_disable(void)
{
return -ENOSYS;
}
void __cpu_die(unsigned int cpu)
void native_cpu_die(unsigned int cpu)
{
/* We said "no" in __cpu_disable */
BUG();
}
void native_play_dead(void)
{
BUG();
}
#endif
arch/x86/kernel/tlb_32.c
浏览文件 @ 807f4f8c
......@@ -241,3 +241,11 @@ void flush_tlb_all(void)
on_each_cpu(do_flush_tlb_all, NULL, 1);
}
void reset_lazy_tlbstate(void)
{
int cpu = raw_smp_processor_id();
per_cpu(cpu_tlbstate, cpu).state = 0;
per_cpu(cpu_tlbstate, cpu).active_mm = &init_mm;
}
arch/x86/kernel/traps_32.c
浏览文件 @ 807f4f8c
......@@ -891,6 +891,7 @@ void __kprobes do_debug(struct pt_regs *regs, long error_code)
{
struct task_struct *tsk = current;
unsigned int condition;
int si_code;
trace_hardirqs_fixup();
......@@ -935,8 +936,9 @@ void __kprobes do_debug(struct pt_regs *regs, long error_code)
goto clear_TF_reenable;
}
si_code = get_si_code((unsigned long)condition);
/* Ok, finally something we can handle */
send_sigtrap(tsk, regs, error_code);
send_sigtrap(tsk, regs, error_code, si_code);
/*
* Disable additional traps. They'll be re-enabled when
......
arch/x86/kernel/traps_64.c
浏览文件 @ 807f4f8c
......@@ -940,7 +940,7 @@ asmlinkage void __kprobes do_debug(struct pt_regs *regs,
tsk->thread.error_code = error_code;
info.si_signo = SIGTRAP;
info.si_errno = 0;
info.si_code = TRAP_BRKPT;
info.si_code = get_si_code(condition);
info.si_addr = user_mode(regs) ? (void __user *)regs->ip : NULL;
force_sig_info(SIGTRAP, &info, tsk);
......
arch/x86/kernel/xsave.c
浏览文件 @ 807f4f8c
......@@ -95,7 +95,9 @@ int save_i387_xstate(void __user *buf)
* Start with clearing the user buffer. This will present a
* clean context for the bytes not touched by the fxsave/xsave.
*/
__clear_user(buf, sig_xstate_size);
err = __clear_user(buf, sig_xstate_size);
if (err)
return err;
if (task_thread_info(tsk)->status & TS_XSAVE)
err = xsave_user(buf);
......@@ -114,6 +116,8 @@ int save_i387_xstate(void __user *buf)
if (task_thread_info(tsk)->status & TS_XSAVE) {
struct _fpstate __user *fx = buf;
struct _xstate __user *x = buf;
u64 xstate_bv;
err = __copy_to_user(&fx->sw_reserved, &fx_sw_reserved,
sizeof(struct _fpx_sw_bytes));
......@@ -121,6 +125,31 @@ int save_i387_xstate(void __user *buf)
err |= __put_user(FP_XSTATE_MAGIC2,
(__u32 __user *) (buf + sig_xstate_size
- FP_XSTATE_MAGIC2_SIZE));
/*
* Read the xstate_bv which we copied (directly from the cpu or
* from the state in task struct) to the user buffers and
* set the FP/SSE bits.
*/
err |= __get_user(xstate_bv, &x->xstate_hdr.xstate_bv);
/*
* For legacy compatible, we always set FP/SSE bits in the bit
* vector while saving the state to the user context. This will
* enable us capturing any changes(during sigreturn) to
* the FP/SSE bits by the legacy applications which don't touch
* xstate_bv in the xsave header.
*
* xsave aware apps can change the xstate_bv in the xsave
* header as well as change any contents in the memory layout.
* xrestore as part of sigreturn will capture all the changes.
*/
xstate_bv |= XSTATE_FPSSE;
err |= __put_user(xstate_bv, &x->xstate_hdr.xstate_bv);
if (err)
return err;
}
return 1;
......@@ -272,7 +301,7 @@ void __cpuinit xsave_init(void)
/*
* setup the xstate image representing the init state
*/
void setup_xstate_init(void)
static void __init setup_xstate_init(void)
{
init_xstate_buf = alloc_bootmem(xstate_size);
init_xstate_buf->i387.mxcsr = MXCSR_DEFAULT;
......
arch/x86/mm/fault.c
浏览文件 @ 807f4f8c
......@@ -914,15 +914,15 @@ LIST_HEAD(pgd_list);
void vmalloc_sync_all(void)
{
#ifdef CONFIG_X86_32
unsigned long start = VMALLOC_START & PGDIR_MASK;
unsigned long address;
#ifdef CONFIG_X86_32
if (SHARED_KERNEL_PMD)
return;
BUILD_BUG_ON(TASK_SIZE & ~PGDIR_MASK);
for (address = start; address >= TASK_SIZE; address += PGDIR_SIZE) {
for (address = VMALLOC_START & PMD_MASK;
address >= TASK_SIZE && address < FIXADDR_TOP;
address += PMD_SIZE) {
unsigned long flags;
struct page *page;
......@@ -935,10 +935,8 @@ void vmalloc_sync_all(void)
spin_unlock_irqrestore(&pgd_lock, flags);
}
#else /* CONFIG_X86_64 */
unsigned long start = VMALLOC_START & PGDIR_MASK;
unsigned long address;
for (address = start; address <= VMALLOC_END; address += PGDIR_SIZE) {
for (address = VMALLOC_START & PGDIR_MASK; address <= VMALLOC_END;
address += PGDIR_SIZE) {
const pgd_t *pgd_ref = pgd_offset_k(address);
unsigned long flags;
struct page *page;
......
arch/x86/mm/init_32.c
浏览文件 @ 807f4f8c
......@@ -31,6 +31,7 @@
#include <linux/cpumask.h>
#include <asm/asm.h>
#include <asm/bios_ebda.h>
#include <asm/processor.h>
#include <asm/system.h>
#include <asm/uaccess.h>
......@@ -969,6 +970,8 @@ void __init mem_init(void)
int codesize, reservedpages, datasize, initsize;
int tmp;
start_periodic_check_for_corruption();
#ifdef CONFIG_FLATMEM
BUG_ON(!mem_map);
#endif
......
arch/x86/mm/init_64.c
浏览文件 @ 807f4f8c
......@@ -31,6 +31,7 @@
#include <linux/nmi.h>
#include <asm/processor.h>
#include <asm/bios_ebda.h>
#include <asm/system.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
......@@ -881,6 +882,8 @@ void __init mem_init(void)
{
long codesize, reservedpages, datasize, initsize;
start_periodic_check_for_corruption();
pci_iommu_alloc();
/* clear_bss() already clear the empty_zero_page */
......
arch/x86/mm/ioremap.c
浏览文件 @ 807f4f8c
......@@ -24,18 +24,26 @@
#ifdef CONFIG_X86_64
unsigned long __phys_addr(unsigned long x)
static inline int phys_addr_valid(unsigned long addr)
{
if (x >= __START_KERNEL_map)
return x - __START_KERNEL_map + phys_base;
return x - PAGE_OFFSET;
return addr < (1UL << boot_cpu_data.x86_phys_bits);
}
EXPORT_SYMBOL(__phys_addr);
static inline int phys_addr_valid(unsigned long addr)
unsigned long __phys_addr(unsigned long x)
{
return addr < (1UL << boot_cpu_data.x86_phys_bits);
if (x >= __START_KERNEL_map) {
x -= __START_KERNEL_map;
VIRTUAL_BUG_ON(x >= KERNEL_IMAGE_SIZE);
x += phys_base;
} else {
VIRTUAL_BUG_ON(x < PAGE_OFFSET);
x -= PAGE_OFFSET;
VIRTUAL_BUG_ON(system_state == SYSTEM_BOOTING ? x > MAXMEM :
!phys_addr_valid(x));
}
return x;
}
EXPORT_SYMBOL(__phys_addr);
#else
......@@ -44,6 +52,17 @@ static inline int phys_addr_valid(unsigned long addr)
return 1;
}
#ifdef CONFIG_DEBUG_VIRTUAL
unsigned long __phys_addr(unsigned long x)
{
/* VMALLOC_* aren't constants; not available at the boot time */
VIRTUAL_BUG_ON(x < PAGE_OFFSET || (system_state != SYSTEM_BOOTING &&
is_vmalloc_addr((void *)x)));
return x - PAGE_OFFSET;
}
EXPORT_SYMBOL(__phys_addr);
#endif
#endif
int page_is_ram(unsigned long pagenr)
......
arch/x86/xen/Kconfig
浏览文件 @ 807f4f8c
......@@ -26,5 +26,13 @@ config XEN_MAX_DOMAIN_MEMORY
config XEN_SAVE_RESTORE
bool
depends on PM
default y
\ No newline at end of file
depends on XEN && PM
default y
config XEN_DEBUG_FS
bool "Enable Xen debug and tuning parameters in debugfs"
depends on XEN && DEBUG_FS
default n
help
Enable statistics output and various tuning options in debugfs.
Enabling this option may incur a significant performance overhead.
arch/x86/xen/Makefile
浏览文件 @ 807f4f8c
obj-y := enlighten.o setup.o multicalls.o mmu.o \
ifdef CONFIG_FTRACE
# Do not profile debug and lowlevel utilities
CFLAGS_REMOVE_spinlock.o = -pg
CFLAGS_REMOVE_time.o = -pg
CFLAGS_REMOVE_irq.o = -pg
endif
obj-y := enlighten.o setup.o multicalls.o mmu.o irq.o \
time.o xen-asm_$(BITS).o grant-table.o suspend.o
obj-$(CONFIG_SMP) += smp.o
obj-$(CONFIG_SMP) += smp.o spinlock.o
obj-$(CONFIG_XEN_DEBUG_FS) += debugfs.o
\ No newline at end of file
arch/x86/xen/debugfs.c 0 → 100644
浏览文件 @ 807f4f8c
此差异已折叠。
arch/x86/xen/debugfs.h 0 → 100644
浏览文件 @ 807f4f8c
#ifndef _XEN_DEBUGFS_H
#define _XEN_DEBUGFS_H
struct dentry * __init xen_init_debugfs(void);
struct dentry *xen_debugfs_create_u32_array(const char *name, mode_t mode,
struct dentry *parent,
u32 *array, unsigned elements);
#endif /* _XEN_DEBUGFS_H */
arch/x86/xen/enlighten.c
浏览文件 @ 807f4f8c
此差异已折叠。
arch/x86/xen/irq.c 0 → 100644
浏览文件 @ 807f4f8c
此差异已折叠。
arch/x86/xen/mmu.c
浏览文件 @ 807f4f8c
此差异已折叠。
arch/x86/xen/mmu.h
浏览文件 @ 807f4f8c
......@@ -18,9 +18,6 @@ void xen_activate_mm(struct mm_struct *prev, struct mm_struct *next);
void xen_dup_mmap(struct mm_struct *oldmm, struct mm_struct *mm);
void xen_exit_mmap(struct mm_struct *mm);
void xen_pgd_pin(pgd_t *pgd);
//void xen_pgd_unpin(pgd_t *pgd);
pteval_t xen_pte_val(pte_t);
pmdval_t xen_pmd_val(pmd_t);
pgdval_t xen_pgd_val(pgd_t);
......
arch/x86/xen/multicalls.c
浏览文件 @ 807f4f8c
此差异已折叠。
arch/x86/xen/smp.c
浏览文件 @ 807f4f8c
此差异已折叠。
arch/x86/xen/spinlock.c 0 → 100644
浏览文件 @ 807f4f8c
此差异已折叠。
arch/x86/xen/time.c
浏览文件 @ 807f4f8c
......@@ -30,8 +30,6 @@
#define TIMER_SLOP 100000
#define NS_PER_TICK (1000000000LL / HZ)
static cycle_t xen_clocksource_read(void);
/* runstate info updated by Xen */
static DEFINE_PER_CPU(struct vcpu_runstate_info, runstate);
......@@ -213,7 +211,7 @@ unsigned long xen_tsc_khz(void)
return xen_khz;
}
static cycle_t xen_clocksource_read(void)
cycle_t xen_clocksource_read(void)
{
struct pvclock_vcpu_time_info *src;
cycle_t ret;
......@@ -452,6 +450,14 @@ void xen_setup_timer(int cpu)
setup_runstate_info(cpu);
}
void xen_teardown_timer(int cpu)
{
struct clock_event_device *evt;
BUG_ON(cpu == 0);
evt = &per_cpu(xen_clock_events, cpu);
unbind_from_irqhandler(evt->irq, NULL);
}
void xen_setup_cpu_clockevents(void)
{
BUG_ON(preemptible());
......
arch/x86/xen/xen-asm_32.S
浏览文件 @ 807f4f8c
......@@ -298,7 +298,7 @@ check_events:
push %eax
push %ecx
push %edx
call force_evtchn_callback
call xen_force_evtchn_callback
pop %edx
pop %ecx
pop %eax
......
arch/x86/xen/xen-asm_64.S
浏览文件 @ 807f4f8c
此差异已折叠。
arch/x86/xen/xen-ops.h
浏览文件 @ 807f4f8c
......@@ -2,6 +2,7 @@
#define XEN_OPS_H
#include <linux/init.h>
#include <linux/clocksource.h>
#include <linux/irqreturn.h>
#include <xen/xen-ops.h>
......@@ -31,7 +32,10 @@ void xen_vcpu_restore(void);
void __init xen_build_dynamic_phys_to_machine(void);
void xen_init_irq_ops(void);
void xen_setup_timer(int cpu);
void xen_teardown_timer(int cpu);
cycle_t xen_clocksource_read(void);
void xen_setup_cpu_clockevents(void);
unsigned long xen_tsc_khz(void);
void __init xen_time_init(void);
......@@ -50,6 +54,10 @@ void __init xen_setup_vcpu_info_placement(void);
#ifdef CONFIG_SMP
void xen_smp_init(void);
void __init xen_init_spinlocks(void);
__cpuinit void xen_init_lock_cpu(int cpu);
void xen_uninit_lock_cpu(int cpu);
extern cpumask_t xen_cpu_initialized_map;
#else
static inline void xen_smp_init(void) {}
......
drivers/block/xen-blkfront.c
浏览文件 @ 807f4f8c
......@@ -1066,7 +1066,7 @@ static struct xenbus_driver blkfront = {
static int __init xlblk_init(void)
{
if (!is_running_on_xen())
if (!xen_domain())
return -ENODEV;
if (register_blkdev(XENVBD_MAJOR, DEV_NAME)) {
......
drivers/char/hvc_xen.c
浏览文件 @ 807f4f8c
此差异已折叠。
drivers/input/xen-kbdfront.c
浏览文件 @ 807f4f8c
此差异已折叠。
drivers/net/xen-netfront.c
浏览文件 @ 807f4f8c
此差异已折叠。
drivers/usb/host/ehci.h
浏览文件 @ 807f4f8c
此差异已折叠。
drivers/video/Kconfig
浏览文件 @ 807f4f8c
此差异已折叠。
drivers/video/console/Kconfig
浏览文件 @ 807f4f8c
此差异已折叠。
drivers/video/xen-fbfront.c
浏览文件 @ 807f4f8c
此差异已折叠。
drivers/xen/Makefile
浏览文件 @ 807f4f8c
obj-y += grant-table.o features.o events.o manage.o
obj-y += xenbus/
obj-$(CONFIG_HOTPLUG_CPU) += cpu_hotplug.o
obj-$(CONFIG_XEN_XENCOMM) += xencomm.o
obj-$(CONFIG_XEN_BALLOON) += balloon.o
drivers/xen/balloon.c
浏览文件 @ 807f4f8c
此差异已折叠。
drivers/xen/cpu_hotplug.c 0 → 100644
浏览文件 @ 807f4f8c
此差异已折叠。
drivers/xen/events.c
浏览文件 @ 807f4f8c
此差异已折叠。
drivers/xen/grant-table.c
浏览文件 @ 807f4f8c
此差异已折叠。
drivers/xen/xenbus/xenbus_probe.c
浏览文件 @ 807f4f8c
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include/asm-generic/siginfo.h
浏览文件 @ 807f4f8c
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include/asm-parisc/siginfo.h
浏览文件 @ 807f4f8c
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include/asm-x86/bios_ebda.h
浏览文件 @ 807f4f8c
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include/asm-x86/boot.h
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include/asm-x86/desc.h
浏览文件 @ 807f4f8c
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include/asm-x86/microcode.h 0 → 100644
浏览文件 @ 807f4f8c
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include/asm-x86/mmzone_64.h
浏览文件 @ 807f4f8c
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include/asm-x86/page_32.h
浏览文件 @ 807f4f8c
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include/asm-x86/paravirt.h
浏览文件 @ 807f4f8c
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include/asm-x86/processor.h
浏览文件 @ 807f4f8c
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include/asm-x86/ptrace.h
浏览文件 @ 807f4f8c
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include/asm-x86/smp.h
浏览文件 @ 807f4f8c
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include/asm-x86/spinlock.h
浏览文件 @ 807f4f8c
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include/asm-x86/tlbflush.h
浏览文件 @ 807f4f8c
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include/asm-x86/traps.h
浏览文件 @ 807f4f8c
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include/asm-x86/xen/hypervisor.h
浏览文件 @ 807f4f8c
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include/linux/elf.h
浏览文件 @ 807f4f8c
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include/linux/kernel.h
浏览文件 @ 807f4f8c
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include/linux/mm.h
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include/linux/mm_types.h
浏览文件 @ 807f4f8c
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include/linux/mmdebug.h 0 → 100644
浏览文件 @ 807f4f8c
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include/linux/sched.h
浏览文件 @ 807f4f8c
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include/linux/usb/ehci_def.h 0 → 100644
浏览文件 @ 807f4f8c
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include/xen/balloon.h 已删除 100644 → 0
浏览文件 @ 1a2217a9
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include/xen/events.h
浏览文件 @ 807f4f8c
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lib/Kconfig.debug
浏览文件 @ 807f4f8c
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lib/cmdline.c
浏览文件 @ 807f4f8c
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mm/vmalloc.c
浏览文件 @ 807f4f8c
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scripts/Kbuild.include
浏览文件 @ 807f4f8c
此差异已折叠。
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