- 18 11月, 2011 4 次提交
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由 David S. Miller 提交于
Some of the sun4v code patching occurs in inline functions visible to, and usable by, modules. Therefore we have to patch them up during module load. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
To handle the large physical addresses, just make a simple wrapper around remap_pfn_range() like MIPS does. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Rafael J. Wysocki 提交于
Fix build regression introduced by commit 056879d2 (ARM: mach-shmobile: sh7372 A3SP no_suspend_console fix) by moving the intialization of the A3SP domain to a separate function and providing an empty definition of it for CONFIG_PM unset. Reported-and-tested-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
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由 Russell King 提交于
These two syscalls were introduced during the last merge window. Add the entries into the ARM call tables for them. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 17 11月, 2011 8 次提交
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由 Will Deacon 提交于
On PPC64, put_sigset_t converts a sigset_t to a compat_sigset_t before copying it to userspace. There is a typo in the case that we have 4 words to copy, meaning that we corrupt the compat_sigset_t. It appears that _NSIG_WORDS can't be greater than 2 at the moment so this code is probably always optimised away anyway. Signed-off-by: NWill Deacon <will.deacon@arm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Benjamin Herrenschmidt 提交于
The Documentation/memory-barriers.txt document requires that atomic operations that return a value act as a memory barrier both before and after the actual atomic operation. Our current implementation doesn't guarantee this. More specifically, while a load following the isync can not be issued before stwcx. has completed, that completion doesn't architecturally means that the result of stwcx. is visible to other processors (or any previous stores for that matter) (typically, the other processors L1 caches can still hold the old value). This has caused an actual crash in RCU torture testing on Power 7 This fixes it by changing those atomic ops to use new macros instead of RELEASE/ACQUIRE barriers, called ATOMIC_ENTRY and ATMOIC_EXIT barriers, which are then defined respectively to lwsync and sync. I haven't had a chance to measure the performance impact (or rather what I measured with kernel compiles is in the noise, I yet have to find a more precise benchmark) Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com>
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由 Kyle Moffett 提交于
Recent binutils refuses to assemble AltiVec opcodes when in e500/SPE mode, as some of those opcodes alias the "SPE" instructions. This triggers an ancient binutils version check even when building a kernel with CONFIG_ALTIVEC disabled. In theory, the check could be conditionalized on CONFIG_ALTIVEC, but in practice it has long outlived its utility. It is virtually impossible to find binutils older than 2.12.1 (released 2002) in the wild anymore. Even ancient RedHat Enterprise Linux 4 has binutils-2.14. To fix the kernel build when done natively on e500 systems with this new binutils, the test is simply removed. Signed-off-by: NKyle Moffett <Kyle.D.Moffett@boeing.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Kumar Gala 提交于
With the introduction of CONFIG_PPC_ADV_DEBUG_REGS user space debug is broken on Book-E 64-bit parts that support delayed debug events. When switch_booke_debug_regs() sets DBCR0 we'll start getting debug events as MSR_DE is also set and we aren't able to handle debug events from kernel space. We can remove the hack that always enables MSR_DE and loads up DBCR0 and just utilize switch_booke_debug_regs() to get user space debug working again. We still need to handle critical/debug exception stacks & proper save/restore of state for those exception levles to support debug events from kernel space like we have on 32-bit. Signed-off-by: NKumar Gala <galak@kernel.crashing.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Kumar Gala 提交于
All of DebugException is already protected by CONFIG_PPC_ADV_DEBUG_REGS there is no need to have another such ifdef inside the function. Signed-off-by: NKumar Gala <galak@kernel.crashing.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Kumar Gala 提交于
We had an existing ifdef for 4xx & BOOKE processors that got changed to CONFIG_PPC_ADV_DEBUG_REGS. The define has nothing to do with CONFIG_PPC_ADV_DEBUG_REGS. The define really should be: #if defined(CONFIG_4xx) || defined(CONFIG_BOOKE) and not #ifdef CONFIG_PPC_ADV_DEBUG_REGS Signed-off-by: NKumar Gala <galak@kernel.crashing.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Zhenzhong Duan 提交于
PVHVM running with more than 32 vcpus and pv_irq/pv_time enabled need VCPU placement to work, or else it will softlockup. CC: stable@kernel.org Acked-by: NStefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: NZhenzhong Duan <zhenzhong.duan@oracle.com> Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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由 David Vrabel 提交于
When mapping a foreign page with xenbus_map_ring_valloc() with the GNTTABOP_map_grant_ref hypercall, set the GNTMAP_contains_pte flag and pass a pointer to the PTE (in init_mm). After the page is mapped, the usual fault mechanism can be used to update additional MMs. This allows the vmalloc_sync_all() to be removed from alloc_vm_area(). Signed-off-by: NDavid Vrabel <david.vrabel@citrix.com> Acked-by: NAndrew Morton <akpm@linux-foundation.org> [v1: Squashed fix by Michal for no-mmu case] Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: NMichal Simek <monstr@monstr.eu>
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- 16 11月, 2011 12 次提交
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由 Geoff Levand 提交于
Move the PS3 IPI message setup from ps3_smp_setup_cpu() to ps3_smp_probe(). Fixes startup warnings like these: ------------[ cut here ]------------ WARNING: at kernel/lockdep.c:2649 Modules linked in: ... ---[ end trace 31fd0ba7d8756001 ]--- Signed-off-by: NGeoff Levand <geoff@infradead.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Geoff Levand 提交于
Fixes the PS3 bootup hang introduced in 3.0-rc1 by: commit 317f3941 sched: Move the second half of ttwu() to the remote cpu Move the PS3's LV1 EOI call lv1_end_of_interrupt_ext() from ps3_chip_eoi() to ps3_get_irq() for IPI messages. If lv1_send_event_locally() is called between a previous call to lv1_send_event_locally() and the coresponding call to lv1_end_of_interrupt_ext() the second event will not be delivered to the target cpu. The PS3's SMP IPIs are implemented using lv1_send_event_locally(), so if two IPI messages of the same type are sent to the same target in a relatively short period of time the second IPI event can become lost when lv1_end_of_interrupt_ext() is called from ps3_chip_eoi(). CC: stable@kernel.org Signed-off-by: NGeoff Levand <geoff@infradead.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Michael Neuling 提交于
If you build with KVM and UP it fails with the following due to a missing include. /arch/powerpc/kvm/book3s_hv.c: In function 'do_h_register_vpa': arch/powerpc/kvm/book3s_hv.c:156:10: error: 'H_PARAMETER' undeclared (first use in this function) arch/powerpc/kvm/book3s_hv.c:156:10: note: each undeclared identifier is reported only once for each function it appears in arch/powerpc/kvm/book3s_hv.c:192:12: error: 'H_RESOURCE' undeclared (first use in this function) arch/powerpc/kvm/book3s_hv.c:222:9: error: 'H_SUCCESS' undeclared (first use in this function) arch/powerpc/kvm/book3s_hv.c: In function 'kvmppc_pseries_do_hcall': arch/powerpc/kvm/book3s_hv.c:228:30: error: 'H_SUCCESS' undeclared (first use in this function) arch/powerpc/kvm/book3s_hv.c:232:7: error: 'H_CEDE' undeclared (first use in this function) arch/powerpc/kvm/book3s_hv.c:234:7: error: 'H_PROD' undeclared (first use in this function) arch/powerpc/kvm/book3s_hv.c:238:10: error: 'H_PARAMETER' undeclared (first use in this function) arch/powerpc/kvm/book3s_hv.c:250:7: error: 'H_CONFER' undeclared (first use in this function) arch/powerpc/kvm/book3s_hv.c:252:7: error: 'H_REGISTER_VPA' undeclared (first use in this function) make[2]: *** [arch/powerpc/kvm/book3s_hv.o] Error 1 Signed-off-by: NMichael Neuling <mikey@neuling.org> cc: stable@kernel.org (3.1 only) Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Kevin Hao 提交于
The trace_hardirqs_off will use CALLER_ADDR0 and CALLER_ADDR1. If an exception occurs in user mode, there is only one stack frame on the stack and accessing the CALLER_ADDR1 will causes the following call trace. So we create a dummy stack frame to make trace_hardirqs_off happy. WARNING: at kernel/smp.c:459 Modules linked in: NIP: c0093280 LR: c00930a0 CTR: c0010780 REGS: edb87ae0 TRAP: 0700 Not tainted (3.1.0) MSR: 00021002 <ME,CE> CR: 28002888 XER: 00000000 TASK = edce2ac0[17658] 'mthread-lock-on' THREAD: edb86000 CPU: 5 GPR00: 00000001 edb87b90 edce2ac0 00000005 c0019594 edb87bd8 00000001 00000fe3 GPR08: 00041000 c084138c 4e20120d edb87b90 48002888 1001aa7c 00000000 00000000 GPR16: 48830000 10012a8c 00000000 10000af4 00000001 c0810000 00000000 00000000 GPR24: ee9aa920 c0816a18 00000000 00000005 c0019594 edb87bd8 ee20178c edb87b90 NIP [c0093280] smp_call_function_many+0x214/0x2b4 LR [c00930a0] smp_call_function_many+0x34/0x2b4 Call Trace: [edb87b90] [c00930a0] smp_call_function_many+0x34/0x2b4 (unreliable) [edb87bd0] [c00194ec] __flush_tlb_page+0xac/0x100 [edb87c00] [c001957c] flush_tlb_page+0x3c/0x54 [edb87c10] [c00180ac] ptep_set_access_flags+0x74/0x12c [edb87c40] [c0128068] handle_pte_fault+0x2f0/0x9ac [edb87cb0] [c0128c3c] handle_mm_fault+0x104/0x1dc [edb87ce0] [c05f40f4] do_page_fault+0x2dc/0x630 [edb87e50] [c001078c] handle_page_fault+0xc/0x80 Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Anton Blanchard 提交于
kdump fails because we try to execute an HV only instruction. Feature fixups are being applied after we copy the exception vectors down to 0 so they miss out on any updates. We have always had this issue but it only became critical in v3.0 when we added CFAR support (breaks POWER5) and v3.1 when we added POWERNV (breaks everyone). Signed-off-by: NAnton Blanchard <anton@samba.org> Cc: <stable@kernel.org> [v3.0+] Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Anton Blanchard 提交于
I had to debug a strange situation where all manner of things were failing. SMT threads, storage and network were all completely broken. The root cause was we couldn't find enough memory to instantiate RTAS - this was a network install so the initrd was huge. Instead of limping along and failing in mysterious ways we should just panic up front if RTAS exists and we can't allocate space for it. Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Suzuki Poulose 提交于
Kexec is not supported on 47x. 47x is a variant of 44x with slightly different MMU and SMP support. There was a typo in the config dependency for kexec. This patch fixes the same. Signed-off-by: NSuzuki K. Poulose <suzuki@in.ibm.com> Signed-off-by: NPaul Bolle <pebolle@tiscali.nl> Cc: Kumar Gala <galak@kernel.crashing.org> Cc: Josh Boyer <jwboyer@gmail.com> Cc: linux ppc dev <linuxppc-dev@lists.ozlabs.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Al Viro 提交于
Should do what other architectures do and wrap all that code into the appropriate ifdef Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Mathias Krause 提交于
The address limit is already set in flush_old_exec() so this set_fs(USER_DS) is redundant. Signed-off-by: NMathias Krause <minipli@googlemail.com> Cc: Guan Xuetao <gxt@mprc.pku.edu.cn> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Acked-by: NGuan Xuetao <gxt@mprc.pku.edu.cn>
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由 Paul Bolle 提交于
Signed-off-by: NPaul Bolle <pebolle@tiscali.nl> Acked-by: NGuan Xuetao <gxt@mprc.pku.edu.cn>
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由 David S. Miller 提交于
As per the comments added by this commit, %g2 turns out to not be a usable place to save away orig_i0 for syscall restart handling. In fact all of %g2, %g3, %g4, and %g5 are assumed to be saved across a system call by various bits of code in glibc. %g1 can't be used because that holds the syscall number, which would need to be saved and restored for syscall restart handling too, and that would only compound our problems :-) This leaves us with %g6 and %g7 which are for "system use". %g7 is used as the "thread register" by glibc, but %g6 is used as a compiler and assembler temporary scratch register. And in no instance is %g6 used to hold a value across a system call. Therefore %g6 is safe for storing away orig_i0, at least for now. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 15 11月, 2011 6 次提交
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由 Paul Bolle 提交于
Signed-off-by: NPaul Bolle <pebolle@tiscali.nl> Acked-by: NGuan Xuetao <gxt@mprc.pku.edu.cn>
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由 Arnaud Lacombe 提交于
Usage of these flags has been deprecated for nearly 4 years by: commit f77bf014 Author: Sam Ravnborg <sam@neptun.(none)> Date: Mon Oct 15 22:25:06 2007 +0200 kbuild: introduce ccflags-y, asflags-y and ldflags-y Moreover, these flags (at least EXTRA_CFLAGS) have been documented for command line use. By default, gmake(1) do not override command line setting, so this is likely to result in build failure or unexpected behavior. Replace their usage by Kbuild's `{as,cc,ld}flags-y'. Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Guan Xuetao <gxt@mprc.pku.edu.cn> Signed-off-by: NArnaud Lacombe <lacombar@gmail.com> Acked-by: NGuan Xuetao <gxt@mprc.pku.edu.cn>
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由 Guan Xuetao 提交于
Remove the __uc32_ prefix in find bitops functions. Move find_* macros behind asm-generic/bitops.h inclusion. see commit <19de85ef> bitops: add #ifndef for each of find bitops also see commit <63e424c8> arch: remove CONFIG_GENERIC_FIND_{NEXT_BIT,BIT_LE,LAST_BIT} Signed-off-by: NGuan Xuetao <gxt@mprc.pku.edu.cn> Cc: Akinobu Mita <akinobu.mita@gmail.com> Acked-by: NAkinobu Mita <akinobu.mita@gmail.com> Cc: Arnd Bergmann <arnd@arndb.de>
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由 David S. Miller 提交于
Although we provide a proper way for a debugger to control whether syscall restart occurs, we run into problems because orig_i0 is not saved and restored properly. Luckily we can solve this problem without having to make debuggers aware of the issue. Across system calls, several registers are considered volatile and can be safely clobbered. Therefore we use the pt_regs save area of one of those registers, %g2, as a place to save and restore orig_i0. Debuggers transparently will do the right thing because they save and restore this register already. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Rafael J. Wysocki 提交于
The SH7372 PM domain initialization routine calls pd_power_up() that executes the domain's .resume() callback, if present, and for the A4R domain this callback attepmts to restore the INTCS state from uninitialized data. To avoid that, introduce __pd_power_up() that will only execute the domain's .resume() callback if its second argument is 'true' and make the SH7372 PM domain initialization use it with 'false' as its second argument. Redefine pd_power_up() as a wrapper around __pd_power_up(). Reported-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de> Tracked-down-by: NMagnus Damm <damm@opensource.se> Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl> Acked-by: NMagnus Damm <damm@opensource.se>
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由 Liu Gang 提交于
The "#include <linux/module.h>" was replaced by "#include <linux/export.h>" in the patch "powerpc: various straight conversions from module.h --> export.h". This will cause the following compile problem: arch/powerpc/sysdev/fsl_rio.c: In function 'fsl_rio_mcheck_exception': arch/powerpc/sysdev/fsl_rio.c:296: error: implicit declaration of function 'search_exception_tables'. The file fsl_rio.c needs the declaration of function "search_exception_tables" in the header file "linux/module.h". Signed-off-by: NLiu Gang <Gang.Liu@freescale.com> Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>
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- 14 11月, 2011 10 次提交
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由 John Crispin 提交于
The code located at arch/mips/lantiq/ included module.h to be able to use the EXPORT_SYMBOL* macros. These can now be directly included using export.h. Signed-off-by: NJohn Crispin <blogic@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2937/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Rabin Vincent 提交于
It appears that stop_machine_text_poke() wants to be called on all CPUs, like it's done from text_poke_smp(). Fix text_poke_smp_batch() to do this. Signed-off-by: NRabin Vincent <rabin@rab.in> Acked-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Jason Baron <jbaron@redhat.com> Link: http://lkml.kernel.org/r/1319702072-32676-1-git-send-email-rabin@rab.inSigned-off-by: NIngo Molnar <mingo@elte.hu>
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由 Heiko Carstens 提交于
Make sure that all cpus in a book on a z10 appear as book siblings and not as core siblings. This fixes some performance regressions that appeared after the book scheduling domain got introduced. Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Jan Glauber 提交于
MSA3 and MSA4 instructions are only available under CONFIG_64BIT. Bail out before using any of these instructions if the kernel is running in 31 bit mode. Signed-off-by: NJan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Jan Glauber 提交于
In ESA mode STCKF is not defined even if the facility bit is enabled. To prevent an illegal operation we must also check if we run a 64 bit kernel. To make the check perform well add the STCKF bit to the machine flags. Signed-off-by: NJan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Michael Holzheu 提交于
When the kernel is started in kdump mode, zfcpdump should not be initialized because both dump methods can't be used at the same time. Signed-off-by: NMichael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Michael Holzheu 提交于
The kdump infrastructure is built on top of kexec. Therefore CONFIG_KEXEC has to be enabled when CONFIG_CRASH_DUMP is selected. Signed-off-by: NMichael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Martin Schwidefsky 提交于
'readelf -n' on the s390 vmlinux file generates lots of warnings about corrupt notes. The reason is that the 'NOTE' program header has incorrect file and memory sizes. The problem is that the section following the NOTES section do not switch to a different phdr and they get added to the NOTE program section. Add a dummy entry to the linker script that switches to the data phdr before the start of the RODATA section. Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Heiko Carstens 提交于
Ignore completion interrupts if the initial interrupt hasn't been received and the addressed task is not running. This case can only happen if leftover (pending) completion interrupt gets delivered which wasn't removed with the PFAULT CANCEL operation during cpu hotplug. Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Martin Schwidefsky 提交于
The pgste_update_all / pgste_update_young and pgste_set_pte need to check if the pte entry contains a valid page address before the storage key can be accessed. In addition pgste_set_pte needs to set the access key and fetch protection bit of the new pte entry, not the old entry. Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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