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提交 520b9617 编写于 作者: I Ingo Molnar
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Merge branch 'x86/core' into x86/generalize-visws

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Documentation/ABI/testing/sysfs-firmware-memmap 0 → 100644
浏览文件 @ 520b9617
What: /sys/firmware/memmap/
Date: June 2008
Contact: Bernhard Walle <bwalle@suse.de>
Description:
On all platforms, the firmware provides a memory map which the
kernel reads. The resources from that memory map are registered
in the kernel resource tree and exposed to userspace via
/proc/iomem (together with other resources).
However, on most architectures that firmware-provided memory
map is modified afterwards by the kernel itself, either because
the kernel merges that memory map with other information or
just because the user overwrites that memory map via command
line.
kexec needs the raw firmware-provided memory map to setup the
parameter segment of the kernel that should be booted with
kexec. Also, the raw memory map is useful for debugging. For
that reason, /sys/firmware/memmap is an interface that provides
the raw memory map to userspace.
The structure is as follows: Under /sys/firmware/memmap there
are subdirectories with the number of the entry as their name:
/sys/firmware/memmap/0
/sys/firmware/memmap/1
/sys/firmware/memmap/2
/sys/firmware/memmap/3
...
The maximum depends on the number of memory map entries provided
by the firmware. The order is just the order that the firmware
provides.
Each directory contains three files:
start : The start address (as hexadecimal number with the
'0x' prefix).
end : The end address, inclusive (regardless whether the
firmware provides inclusive or exclusive ranges).
type : Type of the entry as string. See below for a list of
valid types.
So, for example:
/sys/firmware/memmap/0/start
/sys/firmware/memmap/0/end
/sys/firmware/memmap/0/type
/sys/firmware/memmap/1/start
...
Currently following types exist:
- System RAM
- ACPI Tables
- ACPI Non-volatile Storage
- reserved
Following shell snippet can be used to display that memory
map in a human-readable format:
-------------------- 8< ----------------------------------------
#!/bin/bash
cd /sys/firmware/memmap
for dir in * ; do
start=$(cat $dir/start)
end=$(cat $dir/end)
type=$(cat $dir/type)
printf "%016x-%016x (%s)\n" $start $[ $end +1] "$type"
done
-------------------- >8 ----------------------------------------
Documentation/kdump/kdump.txt
浏览文件 @ 520b9617
......@@ -109,7 +109,7 @@ There are two possible methods of using Kdump.
2) Or use the system kernel binary itself as dump-capture kernel and there is
no need to build a separate dump-capture kernel. This is possible
only with the architecutres which support a relocatable kernel. As
of today i386 and ia64 architectures support relocatable kernel.
of today, i386, x86_64 and ia64 architectures support relocatable kernel.
Building a relocatable kernel is advantageous from the point of view that
one does not have to build a second kernel for capturing the dump. But
......
Documentation/kernel-parameters.txt
浏览文件 @ 520b9617
......@@ -271,6 +271,17 @@ and is between 256 and 4096 characters. It is defined in the file
aic79xx= [HW,SCSI]
See Documentation/scsi/aic79xx.txt.
amd_iommu= [HW,X86-84]
Pass parameters to the AMD IOMMU driver in the system.
Possible values are:
isolate - enable device isolation (each device, as far
as possible, will get its own protection
domain)
amd_iommu_size= [HW,X86-64]
Define the size of the aperture for the AMD IOMMU
driver. Possible values are:
'32M', '64M' (default), '128M', '256M', '512M', '1G'
amijoy.map= [HW,JOY] Amiga joystick support
Map of devices attached to JOY0DAT and JOY1DAT
Format: <a>,<b>
......@@ -599,6 +610,29 @@ and is between 256 and 4096 characters. It is defined in the file
See drivers/char/README.epca and
Documentation/digiepca.txt.
disable_mtrr_cleanup [X86]
enable_mtrr_cleanup [X86]
The kernel tries to adjust MTRR layout from continuous
to discrete, to make X server driver able to add WB
entry later. This parameter enables/disables that.
mtrr_chunk_size=nn[KMG] [X86]
used for mtrr cleanup. It is largest continous chunk
that could hold holes aka. UC entries.
mtrr_gran_size=nn[KMG] [X86]
Used for mtrr cleanup. It is granularity of mtrr block.
Default is 1.
Large value could prevent small alignment from
using up MTRRs.
mtrr_spare_reg_nr=n [X86]
Format: <integer>
Range: 0,7 : spare reg number
Default : 1
Used for mtrr cleanup. It is spare mtrr entries number.
Set to 2 or more if your graphical card needs more.
disable_mtrr_trim [X86, Intel and AMD only]
By default the kernel will trim any uncacheable
memory out of your available memory pool based on
......@@ -2116,6 +2150,9 @@ and is between 256 and 4096 characters. It is defined in the file
usbhid.mousepoll=
[USBHID] The interval which mice are to be polled at.
add_efi_memmap [EFI; x86-32,X86-64] Include EFI memory map in
kernel's map of available physical RAM.
vdso= [X86-32,SH,x86-64]
vdso=2: enable compat VDSO (default with COMPAT_VDSO)
vdso=1: enable VDSO (default)
......
Documentation/nmi_watchdog.txt
浏览文件 @ 520b9617
......@@ -10,7 +10,7 @@ us to generate 'watchdog NMI interrupts'. (NMI: Non Maskable Interrupt
which get executed even if the system is otherwise locked up hard).
This can be used to debug hard kernel lockups. By executing periodic
NMI interrupts, the kernel can monitor whether any CPU has locked up,
and print out debugging messages if so.
and print out debugging messages if so.
In order to use the NMI watchdog, you need to have APIC support in your
kernel. For SMP kernels, APIC support gets compiled in automatically. For
......@@ -22,8 +22,7 @@ CONFIG_X86_UP_IOAPIC is for uniprocessor with an IO-APIC. [Note: certain
kernel debugging options, such as Kernel Stack Meter or Kernel Tracer,
may implicitly disable the NMI watchdog.]
For x86-64, the needed APIC is always compiled in, and the NMI watchdog is
always enabled with I/O-APIC mode (nmi_watchdog=1).
For x86-64, the needed APIC is always compiled in.
Using local APIC (nmi_watchdog=2) needs the first performance register, so
you can't use it for other purposes (such as high precision performance
......@@ -63,16 +62,15 @@ when the system is idle), but if your system locks up on anything but the
"hlt", then you are out of luck -- the event will not happen at all and the
watchdog won't trigger. This is a shortcoming of the local APIC watchdog
-- unfortunately there is no "clock ticks" event that would work all the
time. The I/O APIC watchdog is driven externally and has no such shortcoming.
time. The I/O APIC watchdog is driven externally and has no such shortcoming.
But its NMI frequency is much higher, resulting in a more significant hit
to the overall system performance.
NOTE: starting with 2.4.2-ac18 the NMI-oopser is disabled by default,
you have to enable it with a boot time parameter. Prior to 2.4.2-ac18
the NMI-oopser is enabled unconditionally on x86 SMP boxes.
On x86 nmi_watchdog is disabled by default so you have to enable it with
a boot time parameter.
On x86-64 the NMI oopser is on by default. On 64bit Intel CPUs
it uses IO-APIC by default and on AMD it uses local APIC.
NOTE: In kernels prior to 2.4.2-ac18 the NMI-oopser is enabled unconditionally
on x86 SMP boxes.
[ feel free to send bug reports, suggestions and patches to
Ingo Molnar <mingo@redhat.com> or the Linux SMP mailing
......
Documentation/i386/boot.txt → Documentation/x86/i386/boot.txt
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THE LINUX/I386 BOOT PROTOCOL
----------------------------
THE LINUX/x86 BOOT PROTOCOL
---------------------------
H. Peter Anvin <hpa@zytor.com>
Last update 2007-05-23
On the i386 platform, the Linux kernel uses a rather complicated boot
On the x86 platform, the Linux kernel uses a rather complicated boot
convention. This has evolved partially due to historical aspects, as
well as the desire in the early days to have the kernel itself be a
bootable image, the complicated PC memory model and due to changed
expectations in the PC industry caused by the effective demise of
real-mode DOS as a mainstream operating system.
Currently, the following versions of the Linux/i386 boot protocol exist.
Currently, the following versions of the Linux/x86 boot protocol exist.
Old kernels: zImage/Image support only. Some very early kernels
may not even support a command line.
......@@ -372,10 +369,17 @@ Protocol: 2.00+
- If 0, the protected-mode code is loaded at 0x10000.
- If 1, the protected-mode code is loaded at 0x100000.
Bit 5 (write): QUIET_FLAG
- If 0, print early messages.
- If 1, suppress early messages.
This requests to the kernel (decompressor and early
kernel) to not write early messages that require
accessing the display hardware directly.
Bit 6 (write): KEEP_SEGMENTS
Protocol: 2.07+
- if 0, reload the segment registers in the 32bit entry point.
- if 1, do not reload the segment registers in the 32bit entry point.
- If 0, reload the segment registers in the 32bit entry point.
- If 1, do not reload the segment registers in the 32bit entry point.
Assume that %cs %ds %ss %es are all set to flat segments with
a base of 0 (or the equivalent for their environment).
......@@ -504,7 +508,7 @@ Protocol: 2.06+
maximum size was 255.
Field name: hardware_subarch
Type: write
Type: write (optional, defaults to x86/PC)
Offset/size: 0x23c/4
Protocol: 2.07+
......@@ -520,11 +524,13 @@ Protocol: 2.07+
0x00000002 Xen
Field name: hardware_subarch_data
Type: write
Type: write (subarch-dependent)
Offset/size: 0x240/8
Protocol: 2.07+
A pointer to data that is specific to hardware subarch
This field is currently unused for the default x86/PC environment,
do not modify.
Field name: payload_offset
Type: read
......@@ -545,6 +551,34 @@ Protocol: 2.08+
The length of the payload.
Field name: setup_data
Type: write (special)
Offset/size: 0x250/8
Protocol: 2.09+
The 64-bit physical pointer to NULL terminated single linked list of
struct setup_data. This is used to define a more extensible boot
parameters passing mechanism. The definition of struct setup_data is
as follow:
struct setup_data {
u64 next;
u32 type;
u32 len;
u8 data[0];
};
Where, the next is a 64-bit physical pointer to the next node of
linked list, the next field of the last node is 0; the type is used
to identify the contents of data; the len is the length of data
field; the data holds the real payload.
This list may be modified at a number of points during the bootup
process. Therefore, when modifying this list one should always make
sure to consider the case where the linked list already contains
entries.
**** THE IMAGE CHECKSUM
From boot protocol version 2.08 onwards the CRC-32 is calculated over
......@@ -553,6 +587,7 @@ initial remainder of 0xffffffff. The checksum is appended to the
file; therefore the CRC of the file up to the limit specified in the
syssize field of the header is always 0.
**** THE KERNEL COMMAND LINE
The kernel command line has become an important way for the boot
......@@ -584,28 +619,6 @@ command line is entered using the following protocol:
covered by setup_move_size, so you may need to adjust this
field.
Field name: setup_data
Type: write (obligatory)
Offset/size: 0x250/8
Protocol: 2.09+
The 64-bit physical pointer to NULL terminated single linked list of
struct setup_data. This is used to define a more extensible boot
parameters passing mechanism. The definition of struct setup_data is
as follow:
struct setup_data {
u64 next;
u32 type;
u32 len;
u8 data[0];
};
Where, the next is a 64-bit physical pointer to the next node of
linked list, the next field of the last node is 0; the type is used
to identify the contents of data; the len is the length of data
field; the data holds the real payload.
**** MEMORY LAYOUT OF THE REAL-MODE CODE
......
Documentation/x86_64/mm.txt → Documentation/x86/x86_64/mm.txt
浏览文件 @ 520b9617
......@@ -11,9 +11,8 @@ ffffc10000000000 - ffffc1ffffffffff (=40 bits) hole
ffffc20000000000 - ffffe1ffffffffff (=45 bits) vmalloc/ioremap space
ffffe20000000000 - ffffe2ffffffffff (=40 bits) virtual memory map (1TB)
... unused hole ...
ffffffff80000000 - ffffffff82800000 (=40 MB) kernel text mapping, from phys 0
... unused hole ...
ffffffff88000000 - fffffffffff00000 (=1919 MB) module mapping space
ffffffff80000000 - ffffffffa0000000 (=512 MB) kernel text mapping, from phys 0
ffffffffa0000000 - fffffffffff00000 (=1536 MB) module mapping space
The direct mapping covers all memory in the system up to the highest
memory address (this means in some cases it can also include PCI memory
......
Documentation/x86_64/uefi.txt → Documentation/x86/x86_64/uefi.txt
浏览文件 @ 520b9617
......@@ -36,3 +36,7 @@ Mechanics:
services.
noefi turn off all EFI runtime services
reboot_type=k turn off EFI reboot runtime service
- If the EFI memory map has additional entries not in the E820 map,
you can include those entries in the kernels memory map of available
physical RAM by using the following kernel command line parameter.
add_efi_memmap include EFI memory map of available physical RAM
MAINTAINERS
浏览文件 @ 520b9617
......@@ -376,6 +376,12 @@ L: linux-geode@lists.infradead.org (moderated for non-subscribers)
W: http://www.amd.com/us-en/ConnectivitySolutions/TechnicalResources/0,,50_2334_2452_11363,00.html
S: Supported
AMD IOMMU (AMD-VI)
P: Joerg Roedel
M: joerg.roedel@amd.com
L: iommu@lists.linux-foundation.org
S: Supported
AMS (Apple Motion Sensor) DRIVER
P: Stelian Pop
M: stelian@popies.net
......
arch/x86/Kconfig
浏览文件 @ 520b9617
......@@ -121,7 +121,7 @@ config ARCH_HAS_CACHE_LINE_SIZE
def_bool y
config HAVE_SETUP_PER_CPU_AREA
def_bool X86_64 || (X86_SMP && !X86_VOYAGER)
def_bool X86_64_SMP || (X86_SMP && !X86_VOYAGER)
config HAVE_CPUMASK_OF_CPU_MAP
def_bool X86_64_SMP
......@@ -230,6 +230,26 @@ config SMP
If you don't know what to do here, say N.
config X86_FIND_SMP_CONFIG
def_bool y
depends on X86_MPPARSE || X86_VOYAGER || X86_VISWS
if ACPI
config X86_MPPARSE
def_bool y
bool "Enable MPS table"
depends on X86_LOCAL_APIC && !X86_VISWS
help
For old smp systems that do not have proper acpi support. Newer systems
(esp with 64bit cpus) with acpi support, MADT and DSDT will override it
endif
if !ACPI
config X86_MPPARSE
def_bool y
depends on X86_LOCAL_APIC && !X86_VISWS
endif
choice
prompt "Subarchitecture Type"
default X86_PC
......@@ -251,7 +271,7 @@ config X86_ELAN
config X86_VOYAGER
bool "Voyager (NCR)"
depends on X86_32 && (SMP || BROKEN)
depends on X86_32 && (SMP || BROKEN) && !PCI
help
Voyager is an MCA-based 32-way capable SMP architecture proprietary
to NCR Corp. Machine classes 345x/35xx/4100/51xx are Voyager-based.
......@@ -261,39 +281,9 @@ config X86_VOYAGER
If you do not specifically know you have a Voyager based machine,
say N here, otherwise the kernel you build will not be bootable.
config X86_NUMAQ
bool "NUMAQ (IBM/Sequent)"
depends on SMP && X86_32
select NUMA
help
This option is used for getting Linux to run on a (IBM/Sequent) NUMA
multiquad box. This changes the way that processors are bootstrapped,
and uses Clustered Logical APIC addressing mode instead of Flat Logical.
You will need a new lynxer.elf file to flash your firmware with - send
email to <Martin.Bligh@us.ibm.com>.
config X86_SUMMIT
bool "Summit/EXA (IBM x440)"
depends on X86_32 && SMP
help
This option is needed for IBM systems that use the Summit/EXA chipset.
In particular, it is needed for the x440.
If you don't have one of these computers, you should say N here.
If you want to build a NUMA kernel, you must select ACPI.
config X86_BIGSMP
bool "Support for other sub-arch SMP systems with more than 8 CPUs"
depends on X86_32 && SMP
help
This option is needed for the systems that have more than 8 CPUs
and if the system is not of any sub-arch type above.
If you don't have such a system, you should say N here.
config X86_VISWS
bool "SGI 320/540 (Visual Workstation)"
depends on X86_32
depends on X86_32 && PCI
help
The SGI Visual Workstation series is an IA32-based workstation
based on SGI systems chips with some legacy PC hardware attached.
......@@ -304,12 +294,33 @@ config X86_VISWS
and vice versa. See <file:Documentation/sgi-visws.txt> for details.
config X86_GENERICARCH
bool "Generic architecture (Summit, bigsmp, ES7000, default)"
bool "Generic architecture"
depends on X86_32
help
This option compiles in the Summit, bigsmp, ES7000, default subarchitectures.
It is intended for a generic binary kernel.
If you want a NUMA kernel, select ACPI. We need SRAT for NUMA.
This option compiles in the NUMAQ, Summit, bigsmp, ES7000, default
subarchitectures. It is intended for a generic binary kernel.
if you select them all, kernel will probe it one by one. and will
fallback to default.
if X86_GENERICARCH
config X86_NUMAQ
bool "NUMAQ (IBM/Sequent)"
depends on SMP && X86_32 && PCI && X86_MPPARSE
select NUMA
help
This option is used for getting Linux to run on a NUMAQ (IBM/Sequent)
NUMA multiquad box. This changes the way that processors are
bootstrapped, and uses Clustered Logical APIC addressing mode instead
of Flat Logical. You will need a new lynxer.elf file to flash your
firmware with - send email to <Martin.Bligh@us.ibm.com>.
config X86_SUMMIT
bool "Summit/EXA (IBM x440)"
depends on X86_32 && SMP
help
This option is needed for IBM systems that use the Summit/EXA chipset.
In particular, it is needed for the x440.
config X86_ES7000
bool "Support for Unisys ES7000 IA32 series"
......@@ -317,8 +328,15 @@ config X86_ES7000
help
Support for Unisys ES7000 systems. Say 'Y' here if this kernel is
supposed to run on an IA32-based Unisys ES7000 system.
Only choose this option if you have such a system, otherwise you
should say N here.
config X86_BIGSMP
bool "Support for big SMP systems with more than 8 CPUs"
depends on X86_32 && SMP
help
This option is needed for the systems that have more than 8 CPUs
and if the system is not of any sub-arch type above.
endif
config X86_RDC321X
bool "RDC R-321x SoC"
......@@ -337,7 +355,7 @@ config X86_RDC321X
config X86_VSMP
bool "Support for ScaleMP vSMP"
select PARAVIRT
depends on X86_64
depends on X86_64 && PCI
help
Support for ScaleMP vSMP systems. Say 'Y' here if this kernel is
supposed to run on these EM64T-based machines. Only choose this option
......@@ -417,51 +435,33 @@ config PARAVIRT_CLOCK
endif
config MEMTEST_BOOTPARAM
bool "Memtest boot parameter"
config PARAVIRT_DEBUG
bool "paravirt-ops debugging"
depends on PARAVIRT && DEBUG_KERNEL
help
Enable to debug paravirt_ops internals. Specifically, BUG if
a paravirt_op is missing when it is called.
config MEMTEST
bool "Memtest"
depends on X86_64
default y
help
This option adds a kernel parameter 'memtest', which allows memtest
to be disabled at boot. If this option is selected, memtest
functionality can be disabled with memtest=0 on the kernel
command line. The purpose of this option is to allow a single
kernel image to be distributed with memtest built in, but not
necessarily enabled.
to be set.
memtest=0, mean disabled; -- default
memtest=1, mean do 1 test pattern;
...
memtest=4, mean do 4 test patterns.
If you are unsure how to answer this question, answer Y.
config MEMTEST_BOOTPARAM_VALUE
int "Memtest boot parameter default value (0-4)"
depends on MEMTEST_BOOTPARAM
range 0 4
default 0
help
This option sets the default value for the kernel parameter
'memtest', which allows memtest to be disabled at boot. If this
option is set to 0 (zero), the memtest kernel parameter will
default to 0, disabling memtest at bootup. If this option is
set to 4, the memtest kernel parameter will default to 4,
enabling memtest at bootup, and use that as pattern number.
If you are unsure how to answer this question, answer 0.
config ACPI_SRAT
def_bool y
depends on X86_32 && ACPI && NUMA && (X86_SUMMIT || X86_GENERICARCH)
select ACPI_NUMA
config HAVE_ARCH_PARSE_SRAT
def_bool y
depends on ACPI_SRAT
config X86_SUMMIT_NUMA
def_bool y
depends on X86_32 && NUMA && (X86_SUMMIT || X86_GENERICARCH)
depends on X86_32 && NUMA && X86_GENERICARCH
config X86_CYCLONE_TIMER
def_bool y
depends on X86_32 && X86_SUMMIT || X86_GENERICARCH
depends on X86_GENERICARCH
config ES7000_CLUSTERED_APIC
def_bool y
......@@ -549,6 +549,21 @@ config CALGARY_IOMMU_ENABLED_BY_DEFAULT
Calgary anyway, pass 'iommu=calgary' on the kernel command line.
If unsure, say Y.
config AMD_IOMMU
bool "AMD IOMMU support"
select SWIOTLB
depends on X86_64 && PCI && ACPI
help
With this option you can enable support for AMD IOMMU hardware in
your system. An IOMMU is a hardware component which provides
remapping of DMA memory accesses from devices. With an AMD IOMMU you
can isolate the the DMA memory of different devices and protect the
system from misbehaving device drivers or hardware.
You can find out if your system has an AMD IOMMU if you look into
your BIOS for an option to enable it or if you have an IVRS ACPI
table.
# need this always selected by IOMMU for the VIA workaround
config SWIOTLB
bool
......@@ -560,21 +575,36 @@ config SWIOTLB
3 GB of memory. If unsure, say Y.
config IOMMU_HELPER
def_bool (CALGARY_IOMMU || GART_IOMMU || SWIOTLB)
def_bool (CALGARY_IOMMU || GART_IOMMU || SWIOTLB || AMD_IOMMU)
config MAXSMP
bool "Configure Maximum number of SMP Processors and NUMA Nodes"
depends on X86_64 && SMP
default n
help
Configure maximum number of CPUS and NUMA Nodes for this architecture.
If unsure, say N.
if MAXSMP
config NR_CPUS
int
default "4096"
endif
if !MAXSMP
config NR_CPUS
int "Maximum number of CPUs (2-255)"
range 2 255
int "Maximum number of CPUs (2-4096)"
range 2 4096
depends on SMP
default "32" if X86_NUMAQ || X86_SUMMIT || X86_BIGSMP || X86_ES7000
default "8"
help
This allows you to specify the maximum number of CPUs which this
kernel will support. The maximum supported value is 255 and the
kernel will support. The maximum supported value is 4096 and the
minimum value which makes sense is 2.
This is purely to save memory - each supported CPU adds
approximately eight kilobytes to the kernel image.
endif
config SCHED_SMT
bool "SMT (Hyperthreading) scheduler support"
......@@ -911,9 +941,9 @@ config X86_PAE
config NUMA
bool "Numa Memory Allocation and Scheduler Support (EXPERIMENTAL)"
depends on SMP
depends on X86_64 || (X86_32 && HIGHMEM64G && (X86_NUMAQ || (X86_SUMMIT || X86_GENERICARCH) && ACPI) && EXPERIMENTAL)
depends on X86_64 || (X86_32 && HIGHMEM64G && (X86_NUMAQ || X86_BIGSMP || X86_SUMMIT && ACPI) && EXPERIMENTAL)
default n if X86_PC
default y if (X86_NUMAQ || X86_SUMMIT)
default y if (X86_NUMAQ || X86_SUMMIT || X86_BIGSMP)
help
Enable NUMA (Non Uniform Memory Access) support.
The kernel will try to allocate memory used by a CPU on the
......@@ -965,13 +995,25 @@ config NUMA_EMU
into virtual nodes when booted with "numa=fake=N", where N is the
number of nodes. This is only useful for debugging.
if MAXSMP
config NODES_SHIFT
int
default "9"
endif
if !MAXSMP
config NODES_SHIFT
int "Max num nodes shift(1-9)"
range 1 9 if X86_64
int "Maximum NUMA Nodes (as a power of 2)"
range 1 9 if X86_64
default "6" if X86_64
default "4" if X86_NUMAQ
default "3"
depends on NEED_MULTIPLE_NODES
help
Specify the maximum number of NUMA Nodes available on the target
system. Increases memory reserved to accomodate various tables.
endif
config HAVE_ARCH_BOOTMEM_NODE
def_bool y
......@@ -1090,6 +1132,40 @@ config MTRR
See <file:Documentation/mtrr.txt> for more information.
config MTRR_SANITIZER
def_bool y
prompt "MTRR cleanup support"
depends on MTRR
help
Convert MTRR layout from continuous to discrete, so some X driver
could add WB entries.
Say N here if you see bootup problems (boot crash, boot hang,
spontaneous reboots).
Could be disabled with disable_mtrr_cleanup. Also mtrr_chunk_size
could be used to send largest mtrr entry size for continuous block
to hold holes (aka. UC entries)
If unsure, say Y.
config MTRR_SANITIZER_ENABLE_DEFAULT
int "MTRR cleanup enable value (0-1)"
range 0 1
default "0"
depends on MTRR_SANITIZER
help
Enable mtrr cleanup default value
config MTRR_SANITIZER_SPARE_REG_NR_DEFAULT
int "MTRR cleanup spare reg num (0-7)"
range 0 7
default "1"
depends on MTRR_SANITIZER
help
mtrr cleanup spare entries default, it can be changed via
mtrr_spare_reg_nr=
config X86_PAT
bool
prompt "x86 PAT support"
......@@ -1190,7 +1266,6 @@ config KEXEC
config CRASH_DUMP
bool "kernel crash dumps (EXPERIMENTAL)"
depends on EXPERIMENTAL
depends on X86_64 || (X86_32 && HIGHMEM)
help
Generate crash dump after being started by kexec.
......@@ -1475,8 +1550,7 @@ endmenu
menu "Bus options (PCI etc.)"
config PCI
bool "PCI support" if !X86_VISWS && !X86_VSMP
depends on !X86_VOYAGER
bool "PCI support"
default y
select ARCH_SUPPORTS_MSI if (X86_LOCAL_APIC && X86_IO_APIC)
help
......
arch/x86/Kconfig.cpu
浏览文件 @ 520b9617
......@@ -344,7 +344,7 @@ config X86_F00F_BUG
config X86_WP_WORKS_OK
def_bool y
depends on X86_32 && !M386
depends on !M386
config X86_INVLPG
def_bool y
......@@ -399,6 +399,10 @@ config X86_TSC
def_bool y
depends on ((MWINCHIP3D || MWINCHIP2 || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MVIAC3_2 || MVIAC7 || MGEODEGX1 || MGEODE_LX || MCORE2) && !X86_NUMAQ) || X86_64
config X86_CMPXCHG64
def_bool y
depends on X86_PAE || X86_64
# this should be set for all -march=.. options where the compiler
# generates cmov.
config X86_CMOV
......
arch/x86/Kconfig.debug
浏览文件 @ 520b9617
......@@ -20,6 +20,14 @@ config NONPROMISC_DEVMEM
If in doubt, say Y.
config X86_VERBOSE_BOOTUP
bool "Enable verbose x86 bootup info messages"
default y
help
Enables the informational output from the decompression stage
(e.g. bzImage) of the boot. If you disable this you will still
see errors. Disable this if you want silent bootup.
config EARLY_PRINTK
bool "Early printk" if EMBEDDED
default y
......@@ -60,7 +68,7 @@ config DEBUG_PAGEALLOC
config DEBUG_PER_CPU_MAPS
bool "Debug access to per_cpu maps"
depends on DEBUG_KERNEL
depends on X86_64_SMP
depends on X86_SMP
default n
help
Say Y to verify that the per_cpu map being accessed has
......@@ -129,15 +137,6 @@ config 4KSTACKS
on the VM subsystem for higher order allocations. This option
will also use IRQ stacks to compensate for the reduced stackspace.
config X86_FIND_SMP_CONFIG
def_bool y
depends on X86_LOCAL_APIC || X86_VOYAGER
depends on X86_32
config X86_MPPARSE
def_bool y
depends on (X86_32 && (X86_LOCAL_APIC && !X86_VISWS)) || X86_64
config DOUBLEFAULT
default y
bool "Enable doublefault exception handler" if EMBEDDED
......
arch/x86/Makefile
浏览文件 @ 520b9617
......@@ -117,29 +117,11 @@ mcore-$(CONFIG_X86_VOYAGER) := arch/x86/mach-voyager/
mflags-$(CONFIG_X86_VISWS) := -Iinclude/asm-x86/mach-visws
mcore-$(CONFIG_X86_VISWS) := arch/x86/mach-visws/
# NUMAQ subarch support
mflags-$(CONFIG_X86_NUMAQ) := -Iinclude/asm-x86/mach-numaq
mcore-$(CONFIG_X86_NUMAQ) := arch/x86/mach-default/
# BIGSMP subarch support
mflags-$(CONFIG_X86_BIGSMP) := -Iinclude/asm-x86/mach-bigsmp
mcore-$(CONFIG_X86_BIGSMP) := arch/x86/mach-default/
#Summit subarch support
mflags-$(CONFIG_X86_SUMMIT) := -Iinclude/asm-x86/mach-summit
mcore-$(CONFIG_X86_SUMMIT) := arch/x86/mach-default/
# generic subarchitecture
mflags-$(CONFIG_X86_GENERICARCH):= -Iinclude/asm-x86/mach-generic
fcore-$(CONFIG_X86_GENERICARCH) += arch/x86/mach-generic/
mcore-$(CONFIG_X86_GENERICARCH) := arch/x86/mach-default/
# ES7000 subarch support
mflags-$(CONFIG_X86_ES7000) := -Iinclude/asm-x86/mach-es7000
fcore-$(CONFIG_X86_ES7000) := arch/x86/mach-es7000/
mcore-$(CONFIG_X86_ES7000) := arch/x86/mach-default/
# RDC R-321x subarch support
mflags-$(CONFIG_X86_RDC321X) := -Iinclude/asm-x86/mach-rdc321x
mcore-$(CONFIG_X86_RDC321X) := arch/x86/mach-default/
......@@ -160,6 +142,7 @@ KBUILD_AFLAGS += $(mflags-y)
head-y := arch/x86/kernel/head_$(BITS).o
head-y += arch/x86/kernel/head$(BITS).o
head-y += arch/x86/kernel/head.o
head-y += arch/x86/kernel/init_task.o
libs-y += arch/x86/lib/
......@@ -210,12 +193,12 @@ all: bzImage
# KBUILD_IMAGE specify target image being built
KBUILD_IMAGE := $(boot)/bzImage
zImage zlilo zdisk: KBUILD_IMAGE := arch/x86/boot/zImage
zImage zlilo zdisk: KBUILD_IMAGE := $(boot)/zImage
zImage bzImage: vmlinux
$(Q)$(MAKE) $(build)=$(boot) $(KBUILD_IMAGE)
$(Q)mkdir -p $(objtree)/arch/$(UTS_MACHINE)/boot
$(Q)ln -fsn ../../x86/boot/bzImage $(objtree)/arch/$(UTS_MACHINE)/boot/bzImage
$(Q)ln -fsn ../../x86/boot/bzImage $(objtree)/arch/$(UTS_MACHINE)/boot/$@
compressed: zImage
......
arch/x86/boot/a20.c
浏览文件 @ 520b9617
/* -*- linux-c -*- ------------------------------------------------------- *
*
* Copyright (C) 1991, 1992 Linus Torvalds
* Copyright 2007 rPath, Inc. - All Rights Reserved
* Copyright 2007-2008 rPath, Inc. - All Rights Reserved
*
* This file is part of the Linux kernel, and is made available under
* the terms of the GNU General Public License version 2.
......@@ -95,6 +95,9 @@ static void enable_a20_kbc(void)
outb(0xdf, 0x60); /* A20 on */
empty_8042();
outb(0xff, 0x64); /* Null command, but UHCI wants it */
empty_8042();
}
static void enable_a20_fast(void)
......
arch/x86/boot/compressed/head_64.S
浏览文件 @ 520b9617
......@@ -30,6 +30,7 @@
#include <asm/page.h>
#include <asm/boot.h>
#include <asm/msr.h>
#include <asm/processor-flags.h>
#include <asm/asm-offsets.h>
.section ".text.head"
......@@ -109,7 +110,7 @@ startup_32:
/* Enable PAE mode */
xorl %eax, %eax
orl $(1 << 5), %eax
orl $(X86_CR4_PAE), %eax
movl %eax, %cr4
/*
......@@ -170,7 +171,7 @@ startup_32:
pushl %eax
/* Enter paged protected Mode, activating Long Mode */
movl $0x80000001, %eax /* Enable Paging and Protected mode */
movl $(X86_CR0_PG | X86_CR0_PE), %eax /* Enable Paging and Protected mode */
movl %eax, %cr0
/* Jump from 32bit compatibility mode into 64bit mode. */
......
arch/x86/boot/compressed/misc.c
浏览文件 @ 520b9617
......@@ -30,6 +30,7 @@
#include <asm/io.h>
#include <asm/page.h>
#include <asm/boot.h>
#include <asm/bootparam.h>
/* WARNING!!
* This code is compiled with -fPIC and it is relocated dynamically
......@@ -187,13 +188,8 @@ static void gzip_release(void **);
/*
* This is set up by the setup-routine at boot-time
*/
static unsigned char *real_mode; /* Pointer to real-mode data */
#define RM_EXT_MEM_K (*(unsigned short *)(real_mode + 0x2))
#ifndef STANDARD_MEMORY_BIOS_CALL
#define RM_ALT_MEM_K (*(unsigned long *)(real_mode + 0x1e0))
#endif
#define RM_SCREEN_INFO (*(struct screen_info *)(real_mode+0))
static struct boot_params *real_mode; /* Pointer to real-mode data */
static int quiet;
extern unsigned char input_data[];
extern int input_len;
......@@ -206,7 +202,8 @@ static void free(void *where);
static void *memset(void *s, int c, unsigned n);
static void *memcpy(void *dest, const void *src, unsigned n);
static void putstr(const char *);
static void __putstr(int, const char *);
#define putstr(__x) __putstr(0, __x)
#ifdef CONFIG_X86_64
#define memptr long
......@@ -221,10 +218,6 @@ static char *vidmem;
static int vidport;
static int lines, cols;
#ifdef CONFIG_X86_NUMAQ
void *xquad_portio;
#endif
#include "../../../../lib/inflate.c"
static void *malloc(int size)
......@@ -270,18 +263,24 @@ static void scroll(void)
vidmem[i] = ' ';
}
static void putstr(const char *s)
static void __putstr(int error, const char *s)
{
int x, y, pos;
char c;
#ifndef CONFIG_X86_VERBOSE_BOOTUP
if (!error)
return;
#endif
#ifdef CONFIG_X86_32
if (RM_SCREEN_INFO.orig_video_mode == 0 && lines == 0 && cols == 0)
if (real_mode->screen_info.orig_video_mode == 0 &&
lines == 0 && cols == 0)
return;
#endif
x = RM_SCREEN_INFO.orig_x;
y = RM_SCREEN_INFO.orig_y;
x = real_mode->screen_info.orig_x;
y = real_mode->screen_info.orig_y;
while ((c = *s++) != '\0') {
if (c == '\n') {
......@@ -302,8 +301,8 @@ static void putstr(const char *s)
}
}
RM_SCREEN_INFO.orig_x = x;
RM_SCREEN_INFO.orig_y = y;
real_mode->screen_info.orig_x = x;
real_mode->screen_info.orig_y = y;
pos = (x + cols * y) * 2; /* Update cursor position */
outb(14, vidport);
......@@ -366,9 +365,9 @@ static void flush_window(void)
static void error(char *x)
{
putstr("\n\n");
putstr(x);
putstr("\n\n -- System halted");
__putstr(1, "\n\n");
__putstr(1, x);
__putstr(1, "\n\n -- System halted");
while (1)
asm("hlt");
......@@ -395,7 +394,8 @@ static void parse_elf(void *output)
return;
}
putstr("Parsing ELF... ");
if (!quiet)
putstr("Parsing ELF... ");
phdrs = malloc(sizeof(*phdrs) * ehdr.e_phnum);
if (!phdrs)
......@@ -430,7 +430,10 @@ asmlinkage void decompress_kernel(void *rmode, memptr heap,
{
real_mode = rmode;
if (RM_SCREEN_INFO.orig_video_mode == 7) {
if (real_mode->hdr.loadflags & QUIET_FLAG)
quiet = 1;
if (real_mode->screen_info.orig_video_mode == 7) {
vidmem = (char *) 0xb0000;
vidport = 0x3b4;
} else {
......@@ -438,8 +441,8 @@ asmlinkage void decompress_kernel(void *rmode, memptr heap,
vidport = 0x3d4;
}
lines = RM_SCREEN_INFO.orig_video_lines;
cols = RM_SCREEN_INFO.orig_video_cols;
lines = real_mode->screen_info.orig_video_lines;
cols = real_mode->screen_info.orig_video_cols;
window = output; /* Output buffer (Normally at 1M) */
free_mem_ptr = heap; /* Heap */
......@@ -465,9 +468,11 @@ asmlinkage void decompress_kernel(void *rmode, memptr heap,
#endif
makecrc();
putstr("\nDecompressing Linux... ");
if (!quiet)
putstr("\nDecompressing Linux... ");
gunzip();
parse_elf(output);
putstr("done.\nBooting the kernel.\n");
if (!quiet)
putstr("done.\nBooting the kernel.\n");
return;
}
arch/x86/boot/compressed/relocs.c
浏览文件 @ 520b9617
......@@ -10,16 +10,20 @@
#define USE_BSD
#include <endian.h>
#define MAX_SHDRS 100
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
static Elf32_Ehdr ehdr;
static Elf32_Shdr shdr[MAX_SHDRS];
static Elf32_Sym *symtab[MAX_SHDRS];
static Elf32_Rel *reltab[MAX_SHDRS];
static char *strtab[MAX_SHDRS];
static unsigned long reloc_count, reloc_idx;
static unsigned long *relocs;
struct section {
Elf32_Shdr shdr;
struct section *link;
Elf32_Sym *symtab;
Elf32_Rel *reltab;
char *strtab;
};
static struct section *secs;
/*
* Following symbols have been audited. There values are constant and do
* not change if bzImage is loaded at a different physical address than
......@@ -35,7 +39,7 @@ static int is_safe_abs_reloc(const char* sym_name)
{
int i;
for(i = 0; i < ARRAY_SIZE(safe_abs_relocs); i++) {
for (i = 0; i < ARRAY_SIZE(safe_abs_relocs); i++) {
if (!strcmp(sym_name, safe_abs_relocs[i]))
/* Match found */
return 1;
......@@ -137,10 +141,10 @@ static const char *sec_name(unsigned shndx)
{
const char *sec_strtab;
const char *name;
sec_strtab = strtab[ehdr.e_shstrndx];
sec_strtab = secs[ehdr.e_shstrndx].strtab;
name = "<noname>";
if (shndx < ehdr.e_shnum) {
name = sec_strtab + shdr[shndx].sh_name;
name = sec_strtab + secs[shndx].shdr.sh_name;
}
else if (shndx == SHN_ABS) {
name = "ABSOLUTE";
......@@ -159,7 +163,7 @@ static const char *sym_name(const char *sym_strtab, Elf32_Sym *sym)
name = sym_strtab + sym->st_name;
}
else {
name = sec_name(shdr[sym->st_shndx].sh_name);
name = sec_name(secs[sym->st_shndx].shdr.sh_name);
}
return name;
}
......@@ -244,29 +248,34 @@ static void read_ehdr(FILE *fp)
static void read_shdrs(FILE *fp)
{
int i;
if (ehdr.e_shnum > MAX_SHDRS) {
die("%d section headers supported: %d\n",
ehdr.e_shnum, MAX_SHDRS);
Elf32_Shdr shdr;
secs = calloc(ehdr.e_shnum, sizeof(struct section));
if (!secs) {
die("Unable to allocate %d section headers\n",
ehdr.e_shnum);
}
if (fseek(fp, ehdr.e_shoff, SEEK_SET) < 0) {
die("Seek to %d failed: %s\n",
ehdr.e_shoff, strerror(errno));
}
if (fread(&shdr, sizeof(shdr[0]), ehdr.e_shnum, fp) != ehdr.e_shnum) {
die("Cannot read ELF section headers: %s\n",
strerror(errno));
}
for(i = 0; i < ehdr.e_shnum; i++) {
shdr[i].sh_name = elf32_to_cpu(shdr[i].sh_name);
shdr[i].sh_type = elf32_to_cpu(shdr[i].sh_type);
shdr[i].sh_flags = elf32_to_cpu(shdr[i].sh_flags);
shdr[i].sh_addr = elf32_to_cpu(shdr[i].sh_addr);
shdr[i].sh_offset = elf32_to_cpu(shdr[i].sh_offset);
shdr[i].sh_size = elf32_to_cpu(shdr[i].sh_size);
shdr[i].sh_link = elf32_to_cpu(shdr[i].sh_link);
shdr[i].sh_info = elf32_to_cpu(shdr[i].sh_info);
shdr[i].sh_addralign = elf32_to_cpu(shdr[i].sh_addralign);
shdr[i].sh_entsize = elf32_to_cpu(shdr[i].sh_entsize);
for (i = 0; i < ehdr.e_shnum; i++) {
struct section *sec = &secs[i];
if (fread(&shdr, sizeof shdr, 1, fp) != 1)
die("Cannot read ELF section headers %d/%d: %s\n",
i, ehdr.e_shnum, strerror(errno));
sec->shdr.sh_name = elf32_to_cpu(shdr.sh_name);
sec->shdr.sh_type = elf32_to_cpu(shdr.sh_type);
sec->shdr.sh_flags = elf32_to_cpu(shdr.sh_flags);
sec->shdr.sh_addr = elf32_to_cpu(shdr.sh_addr);
sec->shdr.sh_offset = elf32_to_cpu(shdr.sh_offset);
sec->shdr.sh_size = elf32_to_cpu(shdr.sh_size);
sec->shdr.sh_link = elf32_to_cpu(shdr.sh_link);
sec->shdr.sh_info = elf32_to_cpu(shdr.sh_info);
sec->shdr.sh_addralign = elf32_to_cpu(shdr.sh_addralign);
sec->shdr.sh_entsize = elf32_to_cpu(shdr.sh_entsize);
if (sec->shdr.sh_link < ehdr.e_shnum)
sec->link = &secs[sec->shdr.sh_link];
}
}
......@@ -274,20 +283,22 @@ static void read_shdrs(FILE *fp)
static void read_strtabs(FILE *fp)
{
int i;
for(i = 0; i < ehdr.e_shnum; i++) {
if (shdr[i].sh_type != SHT_STRTAB) {
for (i = 0; i < ehdr.e_shnum; i++) {
struct section *sec = &secs[i];
if (sec->shdr.sh_type != SHT_STRTAB) {
continue;
}
strtab[i] = malloc(shdr[i].sh_size);
if (!strtab[i]) {
sec->strtab = malloc(sec->shdr.sh_size);
if (!sec->strtab) {
die("malloc of %d bytes for strtab failed\n",
shdr[i].sh_size);
sec->shdr.sh_size);
}
if (fseek(fp, shdr[i].sh_offset, SEEK_SET) < 0) {
if (fseek(fp, sec->shdr.sh_offset, SEEK_SET) < 0) {
die("Seek to %d failed: %s\n",
shdr[i].sh_offset, strerror(errno));
sec->shdr.sh_offset, strerror(errno));
}
if (fread(strtab[i], 1, shdr[i].sh_size, fp) != shdr[i].sh_size) {
if (fread(sec->strtab, 1, sec->shdr.sh_size, fp)
!= sec->shdr.sh_size) {
die("Cannot read symbol table: %s\n",
strerror(errno));
}
......@@ -297,28 +308,31 @@ static void read_strtabs(FILE *fp)
static void read_symtabs(FILE *fp)
{
int i,j;
for(i = 0; i < ehdr.e_shnum; i++) {
if (shdr[i].sh_type != SHT_SYMTAB) {
for (i = 0; i < ehdr.e_shnum; i++) {
struct section *sec = &secs[i];
if (sec->shdr.sh_type != SHT_SYMTAB) {
continue;
}
symtab[i] = malloc(shdr[i].sh_size);
if (!symtab[i]) {
sec->symtab = malloc(sec->shdr.sh_size);
if (!sec->symtab) {
die("malloc of %d bytes for symtab failed\n",
shdr[i].sh_size);
sec->shdr.sh_size);
}
if (fseek(fp, shdr[i].sh_offset, SEEK_SET) < 0) {
if (fseek(fp, sec->shdr.sh_offset, SEEK_SET) < 0) {
die("Seek to %d failed: %s\n",
shdr[i].sh_offset, strerror(errno));
sec->shdr.sh_offset, strerror(errno));
}
if (fread(symtab[i], 1, shdr[i].sh_size, fp) != shdr[i].sh_size) {
if (fread(sec->symtab, 1, sec->shdr.sh_size, fp)
!= sec->shdr.sh_size) {
die("Cannot read symbol table: %s\n",
strerror(errno));
}
for(j = 0; j < shdr[i].sh_size/sizeof(symtab[i][0]); j++) {
symtab[i][j].st_name = elf32_to_cpu(symtab[i][j].st_name);
symtab[i][j].st_value = elf32_to_cpu(symtab[i][j].st_value);
symtab[i][j].st_size = elf32_to_cpu(symtab[i][j].st_size);
symtab[i][j].st_shndx = elf16_to_cpu(symtab[i][j].st_shndx);
for (j = 0; j < sec->shdr.sh_size/sizeof(Elf32_Sym); j++) {
Elf32_Sym *sym = &sec->symtab[j];
sym->st_name = elf32_to_cpu(sym->st_name);
sym->st_value = elf32_to_cpu(sym->st_value);
sym->st_size = elf32_to_cpu(sym->st_size);
sym->st_shndx = elf16_to_cpu(sym->st_shndx);
}
}
}
......@@ -327,26 +341,29 @@ static void read_symtabs(FILE *fp)
static void read_relocs(FILE *fp)
{
int i,j;
for(i = 0; i < ehdr.e_shnum; i++) {
if (shdr[i].sh_type != SHT_REL) {
for (i = 0; i < ehdr.e_shnum; i++) {
struct section *sec = &secs[i];
if (sec->shdr.sh_type != SHT_REL) {
continue;
}
reltab[i] = malloc(shdr[i].sh_size);
if (!reltab[i]) {
sec->reltab = malloc(sec->shdr.sh_size);
if (!sec->reltab) {
die("malloc of %d bytes for relocs failed\n",
shdr[i].sh_size);
sec->shdr.sh_size);
}
if (fseek(fp, shdr[i].sh_offset, SEEK_SET) < 0) {
if (fseek(fp, sec->shdr.sh_offset, SEEK_SET) < 0) {
die("Seek to %d failed: %s\n",
shdr[i].sh_offset, strerror(errno));
sec->shdr.sh_offset, strerror(errno));
}
if (fread(reltab[i], 1, shdr[i].sh_size, fp) != shdr[i].sh_size) {
if (fread(sec->reltab, 1, sec->shdr.sh_size, fp)
!= sec->shdr.sh_size) {
die("Cannot read symbol table: %s\n",
strerror(errno));
}
for(j = 0; j < shdr[i].sh_size/sizeof(reltab[0][0]); j++) {
reltab[i][j].r_offset = elf32_to_cpu(reltab[i][j].r_offset);
reltab[i][j].r_info = elf32_to_cpu(reltab[i][j].r_info);
for (j = 0; j < sec->shdr.sh_size/sizeof(Elf32_Rel); j++) {
Elf32_Rel *rel = &sec->reltab[j];
rel->r_offset = elf32_to_cpu(rel->r_offset);
rel->r_info = elf32_to_cpu(rel->r_info);
}
}
}
......@@ -357,19 +374,21 @@ static void print_absolute_symbols(void)
int i;
printf("Absolute symbols\n");
printf(" Num: Value Size Type Bind Visibility Name\n");
for(i = 0; i < ehdr.e_shnum; i++) {
for (i = 0; i < ehdr.e_shnum; i++) {
struct section *sec = &secs[i];
char *sym_strtab;
Elf32_Sym *sh_symtab;
int j;
if (shdr[i].sh_type != SHT_SYMTAB) {
if (sec->shdr.sh_type != SHT_SYMTAB) {
continue;
}
sh_symtab = symtab[i];
sym_strtab = strtab[shdr[i].sh_link];
for(j = 0; j < shdr[i].sh_size/sizeof(symtab[0][0]); j++) {
sh_symtab = sec->symtab;
sym_strtab = sec->link->strtab;
for (j = 0; j < sec->shdr.sh_size/sizeof(Elf32_Sym); j++) {
Elf32_Sym *sym;
const char *name;
sym = &symtab[i][j];
sym = &sec->symtab[j];
name = sym_name(sym_strtab, sym);
if (sym->st_shndx != SHN_ABS) {
continue;
......@@ -389,26 +408,27 @@ static void print_absolute_relocs(void)
{
int i, printed = 0;
for(i = 0; i < ehdr.e_shnum; i++) {
for (i = 0; i < ehdr.e_shnum; i++) {
struct section *sec = &secs[i];
struct section *sec_applies, *sec_symtab;
char *sym_strtab;
Elf32_Sym *sh_symtab;
unsigned sec_applies, sec_symtab;
int j;
if (shdr[i].sh_type != SHT_REL) {
if (sec->shdr.sh_type != SHT_REL) {
continue;
}
sec_symtab = shdr[i].sh_link;
sec_applies = shdr[i].sh_info;
if (!(shdr[sec_applies].sh_flags & SHF_ALLOC)) {
sec_symtab = sec->link;
sec_applies = &secs[sec->shdr.sh_info];
if (!(sec_applies->shdr.sh_flags & SHF_ALLOC)) {
continue;
}
sh_symtab = symtab[sec_symtab];
sym_strtab = strtab[shdr[sec_symtab].sh_link];
for(j = 0; j < shdr[i].sh_size/sizeof(reltab[0][0]); j++) {
sh_symtab = sec_symtab->symtab;
sym_strtab = sec_symtab->link->strtab;
for (j = 0; j < sec->shdr.sh_size/sizeof(Elf32_Rel); j++) {
Elf32_Rel *rel;
Elf32_Sym *sym;
const char *name;
rel = &reltab[i][j];
rel = &sec->reltab[j];
sym = &sh_symtab[ELF32_R_SYM(rel->r_info)];
name = sym_name(sym_strtab, sym);
if (sym->st_shndx != SHN_ABS) {
......@@ -456,26 +476,28 @@ static void walk_relocs(void (*visit)(Elf32_Rel *rel, Elf32_Sym *sym))
{
int i;
/* Walk through the relocations */
for(i = 0; i < ehdr.e_shnum; i++) {
for (i = 0; i < ehdr.e_shnum; i++) {
char *sym_strtab;
Elf32_Sym *sh_symtab;
unsigned sec_applies, sec_symtab;
struct section *sec_applies, *sec_symtab;
int j;
if (shdr[i].sh_type != SHT_REL) {
struct section *sec = &secs[i];
if (sec->shdr.sh_type != SHT_REL) {
continue;
}
sec_symtab = shdr[i].sh_link;
sec_applies = shdr[i].sh_info;
if (!(shdr[sec_applies].sh_flags & SHF_ALLOC)) {
sec_symtab = sec->link;
sec_applies = &secs[sec->shdr.sh_info];
if (!(sec_applies->shdr.sh_flags & SHF_ALLOC)) {
continue;
}
sh_symtab = symtab[sec_symtab];
sym_strtab = strtab[shdr[sec_symtab].sh_link];
for(j = 0; j < shdr[i].sh_size/sizeof(reltab[0][0]); j++) {
sh_symtab = sec_symtab->symtab;
sym_strtab = sec->link->strtab;
for (j = 0; j < sec->shdr.sh_size/sizeof(Elf32_Rel); j++) {
Elf32_Rel *rel;
Elf32_Sym *sym;
unsigned r_type;
rel = &reltab[i][j];
rel = &sec->reltab[j];
sym = &sh_symtab[ELF32_R_SYM(rel->r_info)];
r_type = ELF32_R_TYPE(rel->r_info);
/* Don't visit relocations to absolute symbols */
......@@ -539,7 +561,7 @@ static void emit_relocs(int as_text)
*/
printf(".section \".data.reloc\",\"a\"\n");
printf(".balign 4\n");
for(i = 0; i < reloc_count; i++) {
for (i = 0; i < reloc_count; i++) {
printf("\t .long 0x%08lx\n", relocs[i]);
}
printf("\n");
......@@ -550,7 +572,7 @@ static void emit_relocs(int as_text)
/* Print a stop */
printf("%c%c%c%c", buf[0], buf[1], buf[2], buf[3]);
/* Now print each relocation */
for(i = 0; i < reloc_count; i++) {
for (i = 0; i < reloc_count; i++) {
buf[0] = (relocs[i] >> 0) & 0xff;
buf[1] = (relocs[i] >> 8) & 0xff;
buf[2] = (relocs[i] >> 16) & 0xff;
......@@ -577,7 +599,7 @@ int main(int argc, char **argv)
show_absolute_relocs = 0;
as_text = 0;
fname = NULL;
for(i = 1; i < argc; i++) {
for (i = 1; i < argc; i++) {
char *arg = argv[i];
if (*arg == '-') {
if (strcmp(argv[1], "--abs-syms") == 0) {
......
arch/x86/boot/cpu.c
浏览文件 @ 520b9617
......@@ -28,6 +28,8 @@ static char *cpu_name(int level)
if (level == 64) {
return "x86-64";
} else {
if (level == 15)
level = 6;
sprintf(buf, "i%d86", level);
return buf;
}
......
arch/x86/boot/main.c
浏览文件 @ 520b9617
......@@ -165,6 +165,10 @@ void main(void)
/* Set the video mode */
set_video();
/* Parse command line for 'quiet' and pass it to decompressor. */
if (cmdline_find_option_bool("quiet"))
boot_params.hdr.loadflags |= QUIET_FLAG;
/* Do the last things and invoke protected mode */
go_to_protected_mode();
}
arch/x86/boot/memory.c
浏览文件 @ 520b9617
......@@ -13,6 +13,7 @@
*/
#include "boot.h"
#include <linux/kernel.h>
#define SMAP 0x534d4150 /* ASCII "SMAP" */
......@@ -53,7 +54,7 @@ static int detect_memory_e820(void)
count++;
desc++;
} while (next && count < E820MAX);
} while (next && count < ARRAY_SIZE(boot_params.e820_map));
return boot_params.e820_entries = count;
}
......
arch/x86/boot/pmjump.S
浏览文件 @ 520b9617
......@@ -33,6 +33,8 @@ protected_mode_jump:
movw %cs, %bx
shll $4, %ebx
addl %ebx, 2f
jmp 1f # Short jump to serialize on 386/486
1:
movw $__BOOT_DS, %cx
movw $__BOOT_TSS, %di
......@@ -40,8 +42,6 @@ protected_mode_jump:
movl %cr0, %edx
orb $X86_CR0_PE, %dl # Protected mode
movl %edx, %cr0
jmp 1f # Short jump to serialize on 386/486
1:
# Transition to 32-bit mode
.byte 0x66, 0xea # ljmpl opcode
......
arch/x86/boot/video-vga.c
浏览文件 @ 520b9617
......@@ -259,8 +259,7 @@ static int vga_probe(void)
return mode_count[adapter];
}
__videocard video_vga =
{
__videocard video_vga = {
.card_name = "VGA",
.probe = vga_probe,
.set_mode = vga_set_mode,
......
arch/x86/configs/i386_defconfig
浏览文件 @ 520b9617
此差异已折叠。
arch/x86/configs/x86_64_defconfig
浏览文件 @ 520b9617
此差异已折叠。
arch/x86/ia32/ia32entry.S
浏览文件 @ 520b9617
......@@ -61,6 +61,19 @@
CFI_UNDEFINED r15
.endm
#ifdef CONFIG_PARAVIRT
ENTRY(native_usergs_sysret32)
swapgs
sysretl
ENDPROC(native_usergs_sysret32)
ENTRY(native_irq_enable_sysexit)
swapgs
sti
sysexit
ENDPROC(native_irq_enable_sysexit)
#endif
/*
* 32bit SYSENTER instruction entry.
*
......@@ -85,14 +98,14 @@ ENTRY(ia32_sysenter_target)
CFI_SIGNAL_FRAME
CFI_DEF_CFA rsp,0
CFI_REGISTER rsp,rbp
swapgs
SWAPGS_UNSAFE_STACK
movq %gs:pda_kernelstack, %rsp
addq $(PDA_STACKOFFSET),%rsp
/*
* No need to follow this irqs on/off section: the syscall
* disabled irqs, here we enable it straight after entry:
*/
sti
ENABLE_INTERRUPTS(CLBR_NONE)
movl %ebp,%ebp /* zero extension */
pushq $__USER32_DS
CFI_ADJUST_CFA_OFFSET 8
......@@ -103,7 +116,7 @@ ENTRY(ia32_sysenter_target)
pushfq
CFI_ADJUST_CFA_OFFSET 8
/*CFI_REL_OFFSET rflags,0*/
movl 8*3-THREAD_SIZE+threadinfo_sysenter_return(%rsp), %r10d
movl 8*3-THREAD_SIZE+TI_sysenter_return(%rsp), %r10d
CFI_REGISTER rip,r10
pushq $__USER32_CS
CFI_ADJUST_CFA_OFFSET 8
......@@ -123,8 +136,9 @@ ENTRY(ia32_sysenter_target)
.quad 1b,ia32_badarg
.previous
GET_THREAD_INFO(%r10)
orl $TS_COMPAT,threadinfo_status(%r10)
testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP),threadinfo_flags(%r10)
orl $TS_COMPAT,TI_status(%r10)
testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP), \
TI_flags(%r10)
CFI_REMEMBER_STATE
jnz sysenter_tracesys
sysenter_do_call:
......@@ -134,11 +148,11 @@ sysenter_do_call:
call *ia32_sys_call_table(,%rax,8)
movq %rax,RAX-ARGOFFSET(%rsp)
GET_THREAD_INFO(%r10)
cli
DISABLE_INTERRUPTS(CLBR_NONE)
TRACE_IRQS_OFF
testl $_TIF_ALLWORK_MASK,threadinfo_flags(%r10)
testl $_TIF_ALLWORK_MASK,TI_flags(%r10)
jnz int_ret_from_sys_call
andl $~TS_COMPAT,threadinfo_status(%r10)
andl $~TS_COMPAT,TI_status(%r10)
/* clear IF, that popfq doesn't enable interrupts early */
andl $~0x200,EFLAGS-R11(%rsp)
movl RIP-R11(%rsp),%edx /* User %eip */
......@@ -151,10 +165,7 @@ sysenter_do_call:
CFI_ADJUST_CFA_OFFSET -8
CFI_REGISTER rsp,rcx
TRACE_IRQS_ON
swapgs
sti /* sti only takes effect after the next instruction */
/* sysexit */
.byte 0xf, 0x35
ENABLE_INTERRUPTS_SYSEXIT32
sysenter_tracesys:
CFI_RESTORE_STATE
......@@ -200,7 +211,7 @@ ENTRY(ia32_cstar_target)
CFI_DEF_CFA rsp,PDA_STACKOFFSET
CFI_REGISTER rip,rcx
/*CFI_REGISTER rflags,r11*/
swapgs
SWAPGS_UNSAFE_STACK
movl %esp,%r8d
CFI_REGISTER rsp,r8
movq %gs:pda_kernelstack,%rsp
......@@ -208,7 +219,7 @@ ENTRY(ia32_cstar_target)
* No need to follow this irqs on/off section: the syscall
* disabled irqs and here we enable it straight after entry:
*/
sti
ENABLE_INTERRUPTS(CLBR_NONE)
SAVE_ARGS 8,1,1
movl %eax,%eax /* zero extension */
movq %rax,ORIG_RAX-ARGOFFSET(%rsp)
......@@ -230,8 +241,9 @@ ENTRY(ia32_cstar_target)
.quad 1b,ia32_badarg
.previous
GET_THREAD_INFO(%r10)
orl $TS_COMPAT,threadinfo_status(%r10)
testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP),threadinfo_flags(%r10)
orl $TS_COMPAT,TI_status(%r10)
testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP), \
TI_flags(%r10)
CFI_REMEMBER_STATE
jnz cstar_tracesys
cstar_do_call:
......@@ -241,11 +253,11 @@ cstar_do_call:
call *ia32_sys_call_table(,%rax,8)
movq %rax,RAX-ARGOFFSET(%rsp)
GET_THREAD_INFO(%r10)
cli
DISABLE_INTERRUPTS(CLBR_NONE)
TRACE_IRQS_OFF
testl $_TIF_ALLWORK_MASK,threadinfo_flags(%r10)
testl $_TIF_ALLWORK_MASK,TI_flags(%r10)
jnz int_ret_from_sys_call
andl $~TS_COMPAT,threadinfo_status(%r10)
andl $~TS_COMPAT,TI_status(%r10)
RESTORE_ARGS 1,-ARG_SKIP,1,1,1
movl RIP-ARGOFFSET(%rsp),%ecx
CFI_REGISTER rip,rcx
......@@ -254,8 +266,7 @@ cstar_do_call:
TRACE_IRQS_ON
movl RSP-ARGOFFSET(%rsp),%esp
CFI_RESTORE rsp
swapgs
sysretl
USERGS_SYSRET32
cstar_tracesys:
CFI_RESTORE_STATE
......@@ -310,12 +321,12 @@ ENTRY(ia32_syscall)
/*CFI_REL_OFFSET rflags,EFLAGS-RIP*/
/*CFI_REL_OFFSET cs,CS-RIP*/
CFI_REL_OFFSET rip,RIP-RIP
swapgs
SWAPGS
/*
* No need to follow this irqs on/off section: the syscall
* disabled irqs and here we enable it straight after entry:
*/
sti
ENABLE_INTERRUPTS(CLBR_NONE)
movl %eax,%eax
pushq %rax
CFI_ADJUST_CFA_OFFSET 8
......@@ -324,8 +335,9 @@ ENTRY(ia32_syscall)
this could be a problem. */
SAVE_ARGS 0,0,1
GET_THREAD_INFO(%r10)
orl $TS_COMPAT,threadinfo_status(%r10)
testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP),threadinfo_flags(%r10)
orl $TS_COMPAT,TI_status(%r10)
testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP), \
TI_flags(%r10)
jnz ia32_tracesys
ia32_do_syscall:
cmpl $(IA32_NR_syscalls-1),%eax
......@@ -370,13 +382,11 @@ quiet_ni_syscall:
PTREGSCALL stub32_rt_sigreturn, sys32_rt_sigreturn, %rdi
PTREGSCALL stub32_sigreturn, sys32_sigreturn, %rdi
PTREGSCALL stub32_sigaltstack, sys32_sigaltstack, %rdx
PTREGSCALL stub32_sigsuspend, sys32_sigsuspend, %rcx
PTREGSCALL stub32_execve, sys32_execve, %rcx
PTREGSCALL stub32_fork, sys_fork, %rdi
PTREGSCALL stub32_clone, sys32_clone, %rdx
PTREGSCALL stub32_vfork, sys_vfork, %rdi
PTREGSCALL stub32_iopl, sys_iopl, %rsi
PTREGSCALL stub32_rt_sigsuspend, sys_rt_sigsuspend, %rdx
ENTRY(ia32_ptregs_common)
popq %r11
......@@ -476,7 +486,7 @@ ia32_sys_call_table:
.quad sys_ssetmask
.quad sys_setreuid16 /* 70 */
.quad sys_setregid16
.quad stub32_sigsuspend
.quad sys32_sigsuspend
.quad compat_sys_sigpending
.quad sys_sethostname
.quad compat_sys_setrlimit /* 75 */
......@@ -583,7 +593,7 @@ ia32_sys_call_table:
.quad sys32_rt_sigpending
.quad compat_sys_rt_sigtimedwait
.quad sys32_rt_sigqueueinfo
.quad stub32_rt_sigsuspend
.quad sys_rt_sigsuspend
.quad sys32_pread /* 180 */
.quad sys32_pwrite
.quad sys_chown16
......
arch/x86/kernel/Makefile
浏览文件 @ 520b9617
......@@ -2,7 +2,7 @@
# Makefile for the linux kernel.
#
extra-y := head_$(BITS).o head$(BITS).o init_task.o vmlinux.lds
extra-y := head_$(BITS).o head$(BITS).o head.o init_task.o vmlinux.lds
CPPFLAGS_vmlinux.lds += -U$(UTS_MACHINE)
......@@ -18,15 +18,15 @@ CFLAGS_tsc_64.o := $(nostackp)
obj-y := process_$(BITS).o signal_$(BITS).o entry_$(BITS).o
obj-y += traps_$(BITS).o irq_$(BITS).o
obj-y += time_$(BITS).o ioport.o ldt.o
obj-y += setup_$(BITS).o i8259_$(BITS).o setup.o
obj-y += setup.o i8259.o irqinit_$(BITS).o setup_percpu.o
obj-$(CONFIG_X86_32) += probe_roms_32.o
obj-$(CONFIG_X86_32) += sys_i386_32.o i386_ksyms_32.o
obj-$(CONFIG_X86_64) += sys_x86_64.o x8664_ksyms_64.o
obj-$(CONFIG_X86_64) += syscall_64.o vsyscall_64.o setup64.o
obj-y += bootflag.o e820_$(BITS).o
obj-$(CONFIG_X86_64) += syscall_64.o vsyscall_64.o
obj-y += bootflag.o e820.o
obj-y += pci-dma.o quirks.o i8237.o topology.o kdebugfs.o
obj-y += alternative.o i8253.o pci-nommu.o
obj-$(CONFIG_X86_64) += bugs_64.o
obj-y += tsc_$(BITS).o io_delay.o rtc.o
obj-y += tsc.o io_delay.o rtc.o
obj-$(CONFIG_X86_TRAMPOLINE) += trampoline.o
obj-y += process.o
......@@ -53,7 +53,7 @@ obj-$(CONFIG_X86_32_SMP) += smpcommon.o
obj-$(CONFIG_X86_64_SMP) += tsc_sync.o smpcommon.o
obj-$(CONFIG_X86_TRAMPOLINE) += trampoline_$(BITS).o
obj-$(CONFIG_X86_MPPARSE) += mpparse.o
obj-$(CONFIG_X86_LOCAL_APIC) += apic_$(BITS).o nmi_$(BITS).o
obj-$(CONFIG_X86_LOCAL_APIC) += apic_$(BITS).o nmi.o
obj-$(CONFIG_X86_IO_APIC) += io_apic_$(BITS).o
obj-$(CONFIG_X86_REBOOTFIXUPS) += reboot_fixups_32.o
obj-$(CONFIG_KEXEC) += machine_kexec_$(BITS).o
......@@ -64,7 +64,6 @@ obj-$(CONFIG_X86_SUMMIT_NUMA) += summit_32.o
obj-y += vsmp_64.o
obj-$(CONFIG_KPROBES) += kprobes.o
obj-$(CONFIG_MODULES) += module_$(BITS).o
obj-$(CONFIG_ACPI_SRAT) += srat_32.o
obj-$(CONFIG_EFI) += efi.o efi_$(BITS).o efi_stub_$(BITS).o
obj-$(CONFIG_DOUBLEFAULT) += doublefault_32.o
obj-$(CONFIG_KGDB) += kgdb.o
......@@ -94,12 +93,13 @@ obj-$(CONFIG_OLPC) += olpc.o
###
# 64 bit specific files
ifeq ($(CONFIG_X86_64),y)
obj-y += genapic_64.o genapic_flat_64.o genx2apic_uv_x.o
obj-y += genapic_64.o genapic_flat_64.o genx2apic_uv_x.o tlb_uv.o
obj-$(CONFIG_X86_PM_TIMER) += pmtimer_64.o
obj-$(CONFIG_AUDIT) += audit_64.o
obj-$(CONFIG_GART_IOMMU) += pci-gart_64.o aperture_64.o
obj-$(CONFIG_CALGARY_IOMMU) += pci-calgary_64.o tce_64.o
obj-$(CONFIG_AMD_IOMMU) += amd_iommu_init.o amd_iommu.o
obj-$(CONFIG_SWIOTLB) += pci-swiotlb_64.o
obj-$(CONFIG_PCI_MMCONFIG) += mmconf-fam10h_64.o
......
arch/x86/kernel/acpi/boot.c
浏览文件 @ 520b9617
......@@ -37,6 +37,7 @@
#include <asm/pgtable.h>
#include <asm/io_apic.h>
#include <asm/apic.h>
#include <asm/genapic.h>
#include <asm/io.h>
#include <asm/mpspec.h>
#include <asm/smp.h>
......@@ -83,6 +84,8 @@ int acpi_lapic;
int acpi_ioapic;
int acpi_strict;
static int disable_irq0_through_ioapic __initdata;
u8 acpi_sci_flags __initdata;
int acpi_sci_override_gsi __initdata;
int acpi_skip_timer_override __initdata;
......@@ -106,21 +109,6 @@ static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
*/
enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC;
#ifdef CONFIG_X86_64
/* rely on all ACPI tables being in the direct mapping */
char *__init __acpi_map_table(unsigned long phys_addr, unsigned long size)
{
if (!phys_addr || !size)
return NULL;
if (phys_addr+size <= (max_pfn_mapped << PAGE_SHIFT) + PAGE_SIZE)
return __va(phys_addr);
return NULL;
}
#else
/*
* Temporarily use the virtual area starting from FIX_IO_APIC_BASE_END,
......@@ -139,11 +127,15 @@ char *__init __acpi_map_table(unsigned long phys, unsigned long size)
unsigned long base, offset, mapped_size;
int idx;
if (phys + size < 8 * 1024 * 1024)
if (!phys || !size)
return NULL;
if (phys+size <= (max_pfn_mapped << PAGE_SHIFT))
return __va(phys);
offset = phys & (PAGE_SIZE - 1);
mapped_size = PAGE_SIZE - offset;
clear_fixmap(FIX_ACPI_END);
set_fixmap(FIX_ACPI_END, phys);
base = fix_to_virt(FIX_ACPI_END);
......@@ -155,13 +147,13 @@ char *__init __acpi_map_table(unsigned long phys, unsigned long size)
if (--idx < FIX_ACPI_BEGIN)
return NULL; /* cannot handle this */
phys += PAGE_SIZE;
clear_fixmap(idx);
set_fixmap(idx, phys);
mapped_size += PAGE_SIZE;
}
return ((unsigned char *)base + offset);
}
#endif
#ifdef CONFIG_PCI_MMCONFIG
/* The physical address of the MMCONFIG aperture. Set from ACPI tables. */
......@@ -338,8 +330,6 @@ acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long e
#ifdef CONFIG_X86_IO_APIC
struct mp_ioapic_routing mp_ioapic_routing[MAX_IO_APICS];
static int __init
acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end)
{
......@@ -514,8 +504,6 @@ int acpi_register_gsi(u32 gsi, int triggering, int polarity)
* Make sure all (legacy) PCI IRQs are set as level-triggered.
*/
if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) {
extern void eisa_set_level_irq(unsigned int irq);
if (triggering == ACPI_LEVEL_SENSITIVE)
eisa_set_level_irq(gsi);
}
......@@ -860,6 +848,372 @@ static int __init acpi_parse_madt_lapic_entries(void)
#endif /* CONFIG_X86_LOCAL_APIC */
#ifdef CONFIG_X86_IO_APIC
#define MP_ISA_BUS 0
#ifdef CONFIG_X86_ES7000
extern int es7000_plat;
#endif
static struct {
int apic_id;
int gsi_base;
int gsi_end;
DECLARE_BITMAP(pin_programmed, MP_MAX_IOAPIC_PIN + 1);
} mp_ioapic_routing[MAX_IO_APICS];
static int mp_find_ioapic(int gsi)
{
int i = 0;
/* Find the IOAPIC that manages this GSI. */
for (i = 0; i < nr_ioapics; i++) {
if ((gsi >= mp_ioapic_routing[i].gsi_base)
&& (gsi <= mp_ioapic_routing[i].gsi_end))
return i;
}
printk(KERN_ERR "ERROR: Unable to locate IOAPIC for GSI %d\n", gsi);
return -1;
}
static u8 __init uniq_ioapic_id(u8 id)
{
#ifdef CONFIG_X86_32
if ((boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) &&
!APIC_XAPIC(apic_version[boot_cpu_physical_apicid]))
return io_apic_get_unique_id(nr_ioapics, id);
else
return id;
#else
int i;
DECLARE_BITMAP(used, 256);
bitmap_zero(used, 256);
for (i = 0; i < nr_ioapics; i++) {
struct mp_config_ioapic *ia = &mp_ioapics[i];
__set_bit(ia->mp_apicid, used);
}
if (!test_bit(id, used))
return id;
return find_first_zero_bit(used, 256);
#endif
}
static int bad_ioapic(unsigned long address)
{
if (nr_ioapics >= MAX_IO_APICS) {
printk(KERN_ERR "ERROR: Max # of I/O APICs (%d) exceeded "
"(found %d)\n", MAX_IO_APICS, nr_ioapics);
panic("Recompile kernel with bigger MAX_IO_APICS!\n");
}
if (!address) {
printk(KERN_ERR "WARNING: Bogus (zero) I/O APIC address"
" found in table, skipping!\n");
return 1;
}
return 0;
}
void __init mp_register_ioapic(int id, u32 address, u32 gsi_base)
{
int idx = 0;
if (bad_ioapic(address))
return;
idx = nr_ioapics;
mp_ioapics[idx].mp_type = MP_IOAPIC;
mp_ioapics[idx].mp_flags = MPC_APIC_USABLE;
mp_ioapics[idx].mp_apicaddr = address;
set_fixmap_nocache(FIX_IO_APIC_BASE_0 + idx, address);
mp_ioapics[idx].mp_apicid = uniq_ioapic_id(id);
#ifdef CONFIG_X86_32
mp_ioapics[idx].mp_apicver = io_apic_get_version(idx);
#else
mp_ioapics[idx].mp_apicver = 0;
#endif
/*
* Build basic GSI lookup table to facilitate gsi->io_apic lookups
* and to prevent reprogramming of IOAPIC pins (PCI GSIs).
*/
mp_ioapic_routing[idx].apic_id = mp_ioapics[idx].mp_apicid;
mp_ioapic_routing[idx].gsi_base = gsi_base;
mp_ioapic_routing[idx].gsi_end = gsi_base +
io_apic_get_redir_entries(idx);
printk(KERN_INFO "IOAPIC[%d]: apic_id %d, version %d, address 0x%lx, "
"GSI %d-%d\n", idx, mp_ioapics[idx].mp_apicid,
mp_ioapics[idx].mp_apicver, mp_ioapics[idx].mp_apicaddr,
mp_ioapic_routing[idx].gsi_base, mp_ioapic_routing[idx].gsi_end);
nr_ioapics++;
}
static void assign_to_mp_irq(struct mp_config_intsrc *m,
struct mp_config_intsrc *mp_irq)
{
memcpy(mp_irq, m, sizeof(struct mp_config_intsrc));
}
static int mp_irq_cmp(struct mp_config_intsrc *mp_irq,
struct mp_config_intsrc *m)
{
return memcmp(mp_irq, m, sizeof(struct mp_config_intsrc));
}
static void save_mp_irq(struct mp_config_intsrc *m)
{
int i;
for (i = 0; i < mp_irq_entries; i++) {
if (!mp_irq_cmp(&mp_irqs[i], m))
return;
}
assign_to_mp_irq(m, &mp_irqs[mp_irq_entries]);
if (++mp_irq_entries == MAX_IRQ_SOURCES)
panic("Max # of irq sources exceeded!!\n");
}
void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, u32 gsi)
{
int ioapic;
int pin;
struct mp_config_intsrc mp_irq;
/* Skip the 8254 timer interrupt (IRQ 0) if requested. */
if (bus_irq == 0 && disable_irq0_through_ioapic)
return;
/*
* Convert 'gsi' to 'ioapic.pin'.
*/
ioapic = mp_find_ioapic(gsi);
if (ioapic < 0)
return;
pin = gsi - mp_ioapic_routing[ioapic].gsi_base;
/*
* TBD: This check is for faulty timer entries, where the override
* erroneously sets the trigger to level, resulting in a HUGE
* increase of timer interrupts!
*/
if ((bus_irq == 0) && (trigger == 3))
trigger = 1;
mp_irq.mp_type = MP_INTSRC;
mp_irq.mp_irqtype = mp_INT;
mp_irq.mp_irqflag = (trigger << 2) | polarity;
mp_irq.mp_srcbus = MP_ISA_BUS;
mp_irq.mp_srcbusirq = bus_irq; /* IRQ */
mp_irq.mp_dstapic = mp_ioapics[ioapic].mp_apicid; /* APIC ID */
mp_irq.mp_dstirq = pin; /* INTIN# */
save_mp_irq(&mp_irq);
}
void __init mp_config_acpi_legacy_irqs(void)
{
int i;
int ioapic;
unsigned int dstapic;
struct mp_config_intsrc mp_irq;
#if defined (CONFIG_MCA) || defined (CONFIG_EISA)
/*
* Fabricate the legacy ISA bus (bus #31).
*/
mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA;
#endif
set_bit(MP_ISA_BUS, mp_bus_not_pci);
Dprintk("Bus #%d is ISA\n", MP_ISA_BUS);
#ifdef CONFIG_X86_ES7000
/*
* Older generations of ES7000 have no legacy identity mappings
*/
if (es7000_plat == 1)
return;
#endif
/*
* Locate the IOAPIC that manages the ISA IRQs (0-15).
*/
ioapic = mp_find_ioapic(0);
if (ioapic < 0)
return;
dstapic = mp_ioapics[ioapic].mp_apicid;
/*
* Use the default configuration for the IRQs 0-15. Unless
* overridden by (MADT) interrupt source override entries.
*/
for (i = 0; i < 16; i++) {
int idx;
/* Skip the 8254 timer interrupt (IRQ 0) if requested. */
if (i == 0 && disable_irq0_through_ioapic)
continue;
for (idx = 0; idx < mp_irq_entries; idx++) {
struct mp_config_intsrc *irq = mp_irqs + idx;
/* Do we already have a mapping for this ISA IRQ? */
if (irq->mp_srcbus == MP_ISA_BUS
&& irq->mp_srcbusirq == i)
break;
/* Do we already have a mapping for this IOAPIC pin */
if (irq->mp_dstapic == dstapic &&
irq->mp_dstirq == i)
break;
}
if (idx != mp_irq_entries) {
printk(KERN_DEBUG "ACPI: IRQ%d used by override.\n", i);
continue; /* IRQ already used */
}
mp_irq.mp_type = MP_INTSRC;
mp_irq.mp_irqflag = 0; /* Conforming */
mp_irq.mp_srcbus = MP_ISA_BUS;
mp_irq.mp_dstapic = dstapic;
mp_irq.mp_irqtype = mp_INT;
mp_irq.mp_srcbusirq = i; /* Identity mapped */
mp_irq.mp_dstirq = i;
save_mp_irq(&mp_irq);
}
}
int mp_register_gsi(u32 gsi, int triggering, int polarity)
{
int ioapic;
int ioapic_pin;
#ifdef CONFIG_X86_32
#define MAX_GSI_NUM 4096
#define IRQ_COMPRESSION_START 64
static int pci_irq = IRQ_COMPRESSION_START;
/*
* Mapping between Global System Interrupts, which
* represent all possible interrupts, and IRQs
* assigned to actual devices.
*/
static int gsi_to_irq[MAX_GSI_NUM];
#else
if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC)
return gsi;
#endif
/* Don't set up the ACPI SCI because it's already set up */
if (acpi_gbl_FADT.sci_interrupt == gsi)
return gsi;
ioapic = mp_find_ioapic(gsi);
if (ioapic < 0) {
printk(KERN_WARNING "No IOAPIC for GSI %u\n", gsi);
return gsi;
}
ioapic_pin = gsi - mp_ioapic_routing[ioapic].gsi_base;
#ifdef CONFIG_X86_32
if (ioapic_renumber_irq)
gsi = ioapic_renumber_irq(ioapic, gsi);
#endif
/*
* Avoid pin reprogramming. PRTs typically include entries
* with redundant pin->gsi mappings (but unique PCI devices);
* we only program the IOAPIC on the first.
*/
if (ioapic_pin > MP_MAX_IOAPIC_PIN) {
printk(KERN_ERR "Invalid reference to IOAPIC pin "
"%d-%d\n", mp_ioapic_routing[ioapic].apic_id,
ioapic_pin);
return gsi;
}
if (test_bit(ioapic_pin, mp_ioapic_routing[ioapic].pin_programmed)) {
Dprintk(KERN_DEBUG "Pin %d-%d already programmed\n",
mp_ioapic_routing[ioapic].apic_id, ioapic_pin);
#ifdef CONFIG_X86_32
return (gsi < IRQ_COMPRESSION_START ? gsi : gsi_to_irq[gsi]);
#else
return gsi;
#endif
}
set_bit(ioapic_pin, mp_ioapic_routing[ioapic].pin_programmed);
#ifdef CONFIG_X86_32
/*
* For GSI >= 64, use IRQ compression
*/
if ((gsi >= IRQ_COMPRESSION_START)
&& (triggering == ACPI_LEVEL_SENSITIVE)) {
/*
* For PCI devices assign IRQs in order, avoiding gaps
* due to unused I/O APIC pins.
*/
int irq = gsi;
if (gsi < MAX_GSI_NUM) {
/*
* Retain the VIA chipset work-around (gsi > 15), but
* avoid a problem where the 8254 timer (IRQ0) is setup
* via an override (so it's not on pin 0 of the ioapic),
* and at the same time, the pin 0 interrupt is a PCI
* type. The gsi > 15 test could cause these two pins
* to be shared as IRQ0, and they are not shareable.
* So test for this condition, and if necessary, avoid
* the pin collision.
*/
gsi = pci_irq++;
/*
* Don't assign IRQ used by ACPI SCI
*/
if (gsi == acpi_gbl_FADT.sci_interrupt)
gsi = pci_irq++;
gsi_to_irq[irq] = gsi;
} else {
printk(KERN_ERR "GSI %u is too high\n", gsi);
return gsi;
}
}
#endif
io_apic_set_pci_routing(ioapic, ioapic_pin, gsi,
triggering == ACPI_EDGE_SENSITIVE ? 0 : 1,
polarity == ACPI_ACTIVE_HIGH ? 0 : 1);
return gsi;
}
int mp_config_acpi_gsi(unsigned char number, unsigned int devfn, u8 pin,
u32 gsi, int triggering, int polarity)
{
#ifdef CONFIG_X86_MPPARSE
struct mp_config_intsrc mp_irq;
int ioapic;
if (!acpi_ioapic)
return 0;
/* print the entry should happen on mptable identically */
mp_irq.mp_type = MP_INTSRC;
mp_irq.mp_irqtype = mp_INT;
mp_irq.mp_irqflag = (triggering == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) |
(polarity == ACPI_ACTIVE_HIGH ? 1 : 3);
mp_irq.mp_srcbus = number;
mp_irq.mp_srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3);
ioapic = mp_find_ioapic(gsi);
mp_irq.mp_dstapic = mp_ioapic_routing[ioapic].apic_id;
mp_irq.mp_dstirq = gsi - mp_ioapic_routing[ioapic].gsi_base;
save_mp_irq(&mp_irq);
#endif
return 0;
}
/*
* Parse IOAPIC related entries in MADT
* returns 0 on success, < 0 on error
......@@ -1009,8 +1363,6 @@ static void __init acpi_process_madt(void)
return;
}
#ifdef __i386__
static int __init disable_acpi_irq(const struct dmi_system_id *d)
{
if (!acpi_force) {
......@@ -1060,6 +1412,28 @@ static int __init force_acpi_ht(const struct dmi_system_id *d)
return 0;
}
/*
* Don't register any I/O APIC entries for the 8254 timer IRQ.
*/
static int __init
dmi_disable_irq0_through_ioapic(const struct dmi_system_id *d)
{
pr_notice("%s detected: disabling IRQ 0 through I/O APIC\n", d->ident);
disable_irq0_through_ioapic = 1;
return 0;
}
/*
* Force ignoring BIOS IRQ0 pin2 override
*/
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;
force_mask_ioapic_irq_2();
return 0;
}
/*
* If your system is blacklisted here, but you find that acpi=force
* works for you, please contact acpi-devel@sourceforge.net
......@@ -1227,11 +1601,61 @@ static struct dmi_system_id __initdata acpi_dmi_table[] = {
DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"),
},
},
/*
* HP laptops which use a DSDT reporting as HP/SB400/10000,
* which includes some code which overrides all temperature
* trip points to 16C if the INTIN2 input of the I/O APIC
* is enabled. This input is incorrectly designated the
* ISA IRQ 0 via an interrupt source override even though
* it is wired to the output of the master 8259A and INTIN0
* is not connected at all. Abandon any attempts to route
* IRQ 0 through the I/O APIC therefore.
*/
{
.callback = dmi_disable_irq0_through_ioapic,
.ident = "HP NX6125 laptop",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6125"),
},
},
{
.callback = dmi_disable_irq0_through_ioapic,
.ident = "HP NX6325 laptop",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"),
},
},
/*
* HP laptops which use a DSDT reporting as HP/SB400/10000,
* which includes some code which overrides all temperature
* trip points to 16C if the INTIN2 input of the I/O APIC
* is enabled. This input is incorrectly designated the
* ISA IRQ 0 via an interrupt source override even though
* it is wired to the output of the master 8259A and INTIN0
* is not connected at all. Force ignoring BIOS IRQ0 pin2
* override in that cases.
*/
{
.callback = dmi_ignore_irq0_timer_override,
.ident = "HP NX6125 laptop",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6125"),
},
},
{
.callback = dmi_ignore_irq0_timer_override,
.ident = "HP NX6325 laptop",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"),
},
},
{}
};
#endif /* __i386__ */
/*
* acpi_boot_table_init() and acpi_boot_init()
* called from setup_arch(), always.
......@@ -1259,9 +1683,7 @@ int __init acpi_boot_table_init(void)
{
int error;
#ifdef __i386__
dmi_check_system(acpi_dmi_table);
#endif
/*
* If acpi_disabled, bail out
......@@ -1386,6 +1808,20 @@ static int __init parse_pci(char *arg)
}
early_param("pci", parse_pci);
int __init acpi_mps_check(void)
{
#if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE)
/* mptable code is not built-in*/
if (acpi_disabled || acpi_noirq) {
printk(KERN_WARNING "MPS support code is not built-in.\n"
"Using acpi=off or acpi=noirq or pci=noacpi "
"may have problem\n");
return 1;
}
#endif
return 0;
}
#ifdef CONFIG_X86_IO_APIC
static int __init parse_acpi_skip_timer_override(char *arg)
{
......
arch/x86/kernel/acpi/sleep.c
浏览文件 @ 520b9617
......@@ -86,7 +86,9 @@ int acpi_save_state_mem(void)
saved_magic = 0x12345678;
#else /* CONFIG_64BIT */
header->trampoline_segment = setup_trampoline() >> 4;
init_rsp = (unsigned long)temp_stack + 4096;
#ifdef CONFIG_SMP
stack_start.sp = temp_stack + 4096;
#endif
initial_code = (unsigned long)wakeup_long64;
saved_magic = 0x123456789abcdef0;
#endif /* CONFIG_64BIT */
......
arch/x86/kernel/amd_iommu.c 0 → 100644
浏览文件 @ 520b9617
此差异已折叠。
arch/x86/kernel/amd_iommu_init.c 0 → 100644
浏览文件 @ 520b9617
此差异已折叠。
arch/x86/kernel/aperture_64.c
浏览文件 @ 520b9617
此差异已折叠。
arch/x86/kernel/apic_32.c
浏览文件 @ 520b9617
......@@ -52,30 +52,41 @@
unsigned long mp_lapic_addr;
DEFINE_PER_CPU(u16, x86_bios_cpu_apicid) = BAD_APICID;
EXPORT_PER_CPU_SYMBOL(x86_bios_cpu_apicid);
/*
* Knob to control our willingness to enable the local APIC.
*
* -1=force-disable, +1=force-enable
* +1=force-enable
*/
static int enable_local_apic __initdata;
static int force_enable_local_apic;
int disable_apic;
/* Local APIC timer verification ok */
static int local_apic_timer_verify_ok;
/* Disable local APIC timer from the kernel commandline or via dmi quirk
or using CPU MSR check */
int local_apic_timer_disabled;
/* Disable local APIC timer from the kernel commandline or via dmi quirk */
static int local_apic_timer_disabled;
/* Local APIC timer works in C2 */
int local_apic_timer_c2_ok;
EXPORT_SYMBOL_GPL(local_apic_timer_c2_ok);
int first_system_vector = 0xfe;
char system_vectors[NR_VECTORS] = { [0 ... NR_VECTORS-1] = SYS_VECTOR_FREE};
/*
* Debug level, exported for io_apic.c
*/
int apic_verbosity;
int pic_mode;
/* Have we found an MP table */
int smp_found_config;
static struct resource lapic_resource = {
.name = "Local APIC",
.flags = IORESOURCE_MEM | IORESOURCE_BUSY,
};
static unsigned int calibration_result;
static int lapic_next_event(unsigned long delta,
......@@ -545,7 +556,7 @@ void __init setup_boot_APIC_clock(void)
lapic_clockevent.features &= ~CLOCK_EVT_FEAT_DUMMY;
else
printk(KERN_WARNING "APIC timer registered as dummy,"
" due to nmi_watchdog=1!\n");
" due to nmi_watchdog=%d!\n", nmi_watchdog);
}
/* Setup the lapic or request the broadcast */
......@@ -1094,7 +1105,7 @@ static int __init detect_init_APIC(void)
u32 h, l, features;
/* Disabled by kernel option? */
if (enable_local_apic < 0)
if (disable_apic)
return -1;
switch (boot_cpu_data.x86_vendor) {
......@@ -1117,7 +1128,7 @@ static int __init detect_init_APIC(void)
* Over-ride BIOS and try to enable the local APIC only if
* "lapic" specified.
*/
if (enable_local_apic <= 0) {
if (!force_enable_local_apic) {
printk(KERN_INFO "Local APIC disabled by BIOS -- "
"you can enable it with \"lapic\"\n");
return -1;
......@@ -1154,9 +1165,6 @@ static int __init detect_init_APIC(void)
if (l & MSR_IA32_APICBASE_ENABLE)
mp_lapic_addr = l & MSR_IA32_APICBASE_BASE;
if (nmi_watchdog != NMI_NONE && nmi_watchdog != NMI_DISABLED)
nmi_watchdog = NMI_LOCAL_APIC;
printk(KERN_INFO "Found and enabled local APIC!\n");
apic_pm_activate();
......@@ -1195,36 +1203,6 @@ void __init init_apic_mappings(void)
if (boot_cpu_physical_apicid == -1U)
boot_cpu_physical_apicid = GET_APIC_ID(read_apic_id());
#ifdef CONFIG_X86_IO_APIC
{
unsigned long ioapic_phys, idx = FIX_IO_APIC_BASE_0;
int i;
for (i = 0; i < nr_ioapics; i++) {
if (smp_found_config) {
ioapic_phys = mp_ioapics[i].mpc_apicaddr;
if (!ioapic_phys) {
printk(KERN_ERR
"WARNING: bogus zero IO-APIC "
"address found in MPTABLE, "
"disabling IO/APIC support!\n");
smp_found_config = 0;
skip_ioapic_setup = 1;
goto fake_ioapic_page;
}
} else {
fake_ioapic_page:
ioapic_phys = (unsigned long)
alloc_bootmem_pages(PAGE_SIZE);
ioapic_phys = __pa(ioapic_phys);
}
set_fixmap_nocache(idx, ioapic_phys);
printk(KERN_DEBUG "mapped IOAPIC to %08lx (%08lx)\n",
__fix_to_virt(idx), ioapic_phys);
idx++;
}
}
#endif
}
/*
......@@ -1236,7 +1214,7 @@ int apic_version[MAX_APICS];
int __init APIC_init_uniprocessor(void)
{
if (enable_local_apic < 0)
if (disable_apic)
clear_cpu_cap(&boot_cpu_data, X86_FEATURE_APIC);
if (!smp_found_config && !cpu_has_apic)
......@@ -1265,10 +1243,14 @@ int __init APIC_init_uniprocessor(void)
#ifdef CONFIG_CRASH_DUMP
boot_cpu_physical_apicid = GET_APIC_ID(read_apic_id());
#endif
phys_cpu_present_map = physid_mask_of_physid(boot_cpu_physical_apicid);
physid_set_mask_of_physid(boot_cpu_physical_apicid, &phys_cpu_present_map);
setup_local_APIC();
#ifdef CONFIG_X86_IO_APIC
if (!smp_found_config || skip_ioapic_setup || !nr_ioapics)
#endif
localise_nmi_watchdog();
end_local_APIC_setup();
#ifdef CONFIG_X86_IO_APIC
if (smp_found_config)
......@@ -1351,13 +1333,13 @@ void __init smp_intr_init(void)
* The reschedule interrupt is a CPU-to-CPU reschedule-helper
* IPI, driven by wakeup.
*/
set_intr_gate(RESCHEDULE_VECTOR, reschedule_interrupt);
alloc_intr_gate(RESCHEDULE_VECTOR, reschedule_interrupt);
/* IPI for invalidation */
set_intr_gate(INVALIDATE_TLB_VECTOR, invalidate_interrupt);
alloc_intr_gate(INVALIDATE_TLB_VECTOR, invalidate_interrupt);
/* IPI for generic function call */
set_intr_gate(CALL_FUNCTION_VECTOR, call_function_interrupt);
alloc_intr_gate(CALL_FUNCTION_VECTOR, call_function_interrupt);
}
#endif
......@@ -1370,15 +1352,15 @@ void __init apic_intr_init(void)
smp_intr_init();
#endif
/* self generated IPI for local APIC timer */
set_intr_gate(LOCAL_TIMER_VECTOR, apic_timer_interrupt);
alloc_intr_gate(LOCAL_TIMER_VECTOR, apic_timer_interrupt);
/* IPI vectors for APIC spurious and error interrupts */
set_intr_gate(SPURIOUS_APIC_VECTOR, spurious_interrupt);
set_intr_gate(ERROR_APIC_VECTOR, error_interrupt);
alloc_intr_gate(SPURIOUS_APIC_VECTOR, spurious_interrupt);
alloc_intr_gate(ERROR_APIC_VECTOR, error_interrupt);
/* thermal monitor LVT interrupt */
#ifdef CONFIG_X86_MCE_P4THERMAL
set_intr_gate(THERMAL_APIC_VECTOR, thermal_interrupt);
alloc_intr_gate(THERMAL_APIC_VECTOR, thermal_interrupt);
#endif
}
......@@ -1513,6 +1495,9 @@ void __cpuinit generic_processor_info(int apicid, int version)
*/
cpu = 0;
if (apicid > max_physical_apicid)
max_physical_apicid = apicid;
/*
* Would be preferable to switch to bigsmp when CONFIG_HOTPLUG_CPU=y
* but we need to work other dependencies like SMP_SUSPEND etc
......@@ -1520,7 +1505,7 @@ void __cpuinit generic_processor_info(int apicid, int version)
* if (CPU_HOTPLUG_ENABLED || num_processors > 8)
* - Ashok Raj <ashok.raj@intel.com>
*/
if (num_processors > 8) {
if (max_physical_apicid >= 8) {
switch (boot_cpu_data.x86_vendor) {
case X86_VENDOR_INTEL:
if (!APIC_XAPIC(version)) {
......@@ -1534,9 +1519,9 @@ void __cpuinit generic_processor_info(int apicid, int version)
}
#ifdef CONFIG_SMP
/* are we being called early in kernel startup? */
if (x86_cpu_to_apicid_early_ptr) {
u16 *cpu_to_apicid = x86_cpu_to_apicid_early_ptr;
u16 *bios_cpu_apicid = x86_bios_cpu_apicid_early_ptr;
if (early_per_cpu_ptr(x86_cpu_to_apicid)) {
u16 *cpu_to_apicid = early_per_cpu_ptr(x86_cpu_to_apicid);
u16 *bios_cpu_apicid = early_per_cpu_ptr(x86_bios_cpu_apicid);
cpu_to_apicid[cpu] = apicid;
bios_cpu_apicid[cpu] = apicid;
......@@ -1703,14 +1688,14 @@ static void apic_pm_activate(void) { }
*/
static int __init parse_lapic(char *arg)
{
enable_local_apic = 1;
force_enable_local_apic = 1;
return 0;
}
early_param("lapic", parse_lapic);
static int __init parse_nolapic(char *arg)
{
enable_local_apic = -1;
disable_apic = 1;
clear_cpu_cap(&boot_cpu_data, X86_FEATURE_APIC);
return 0;
}
......@@ -1740,3 +1725,21 @@ static int __init apic_set_verbosity(char *str)
}
__setup("apic=", apic_set_verbosity);
static int __init lapic_insert_resource(void)
{
if (!apic_phys)
return -1;
/* Put local APIC into the resource map. */
lapic_resource.start = apic_phys;
lapic_resource.end = lapic_resource.start + PAGE_SIZE - 1;
insert_resource(&iomem_resource, &lapic_resource);
return 0;
}
/*
* need call insert after e820_reserve_resources()
* that is using request_resource
*/
late_initcall(lapic_insert_resource);
arch/x86/kernel/apic_64.c
浏览文件 @ 520b9617
此差异已折叠。
arch/x86/kernel/apm_32.c
浏览文件 @ 520b9617
......@@ -228,6 +228,7 @@
#include <linux/suspend.h>
#include <linux/kthread.h>
#include <linux/jiffies.h>
#include <linux/smp_lock.h>
#include <asm/system.h>
#include <asm/uaccess.h>
......@@ -1149,7 +1150,7 @@ static void queue_event(apm_event_t event, struct apm_user *sender)
as->event_tail = 0;
}
as->events[as->event_head] = event;
if ((!as->suser) || (!as->writer))
if (!as->suser || !as->writer)
continue;
switch (event) {
case APM_SYS_SUSPEND:
......@@ -1396,7 +1397,7 @@ static void apm_mainloop(void)
static int check_apm_user(struct apm_user *as, const char *func)
{
if ((as == NULL) || (as->magic != APM_BIOS_MAGIC)) {
if (as == NULL || as->magic != APM_BIOS_MAGIC) {
printk(KERN_ERR "apm: %s passed bad filp\n", func);
return 1;
}
......@@ -1459,18 +1460,19 @@ static unsigned int do_poll(struct file *fp, poll_table *wait)
return 0;
}
static int do_ioctl(struct inode *inode, struct file *filp,
u_int cmd, u_long arg)
static long do_ioctl(struct file *filp, u_int cmd, u_long arg)
{
struct apm_user *as;
int ret;
as = filp->private_data;
if (check_apm_user(as, "ioctl"))
return -EIO;
if ((!as->suser) || (!as->writer))
if (!as->suser || !as->writer)
return -EPERM;
switch (cmd) {
case APM_IOC_STANDBY:
lock_kernel();
if (as->standbys_read > 0) {
as->standbys_read--;
as->standbys_pending--;
......@@ -1479,8 +1481,10 @@ static int do_ioctl(struct inode *inode, struct file *filp,
queue_event(APM_USER_STANDBY, as);
if (standbys_pending <= 0)
standby();
unlock_kernel();
break;
case APM_IOC_SUSPEND:
lock_kernel();
if (as->suspends_read > 0) {
as->suspends_read--;
as->suspends_pending--;
......@@ -1488,16 +1492,17 @@ static int do_ioctl(struct inode *inode, struct file *filp,
} else
queue_event(APM_USER_SUSPEND, as);
if (suspends_pending <= 0) {
return suspend(1);
ret = suspend(1);
} else {
as->suspend_wait = 1;
wait_event_interruptible(apm_suspend_waitqueue,
as->suspend_wait == 0);
return as->suspend_result;
ret = as->suspend_result;
}
break;
unlock_kernel();
return ret;
default:
return -EINVAL;
return -ENOTTY;
}
return 0;
}
......@@ -1860,7 +1865,7 @@ static const struct file_operations apm_bios_fops = {
.owner = THIS_MODULE,
.read = do_read,
.poll = do_poll,
.ioctl = do_ioctl,
.unlocked_ioctl = do_ioctl,
.open = do_open,
.release = do_release,
};
......
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......@@ -62,6 +62,7 @@ static struct _cache_table cache_table[] __cpuinitdata =
{ 0x4b, LVL_3, 8192 }, /* 16-way set assoc, 64 byte line size */
{ 0x4c, LVL_3, 12288 }, /* 12-way set assoc, 64 byte line size */
{ 0x4d, LVL_3, 16384 }, /* 16-way set assoc, 64 byte line size */
{ 0x4e, LVL_2, 6144 }, /* 24-way set assoc, 64 byte line size */
{ 0x60, LVL_1_DATA, 16 }, /* 8-way set assoc, sectored cache, 64 byte line size */
{ 0x66, LVL_1_DATA, 8 }, /* 4-way set assoc, sectored cache, 64 byte line size */
{ 0x67, LVL_1_DATA, 16 }, /* 4-way set assoc, sectored cache, 64 byte line size */
......
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