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2009-06-17x86: use zalloc_cpumask_var for mce_dev_initializedYinghai Lu
We need a cleared cpu_mask to record if mce is initialized, especially when MAXSMP is used. used zalloc_... instead Signed-off-by: Yinghai Lu <yinghai@kernel.org> Reviewed-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Cc: stable@kernel.org Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-06-17x86: fix duplicated sysfs attributeYinghai Lu
The sysfs attribute cmci_disabled was accidentall turned into a duplicate of ignore_ce, breaking all other attributes. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Acked-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-06-17Merge branch 'x86/urgent' into x86/mce3Ingo Molnar
Conflicts: arch/x86/kernel/cpu/mcheck/mce_intel.c Merge reason: merge with an urgent-branch MCE fix. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-17x86: nmi: Add Intel processor 0x6f4 to NMI perfctr1 workaroundPrarit Bhargava
Expand Intel NMI perfctr1 workaround to include a Core2 processor stepping (cpuid family-6, model-f, stepping-4). Resolves a situation where the NMI would not enable on these processors. Signed-off-by: Prarit Bhargava <prarit@redhat.com> Acked-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: prarit@redhat.com Cc: suresh.b.siddha@intel.com Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-17x86, mce: mce_intel.c needs <asm/apic.h>H. Peter Anvin
mce_intel.c uses apic_write() and lapic_get_maxlvt(), and so it needs <asm/apic.h>. Signed-off-by: H. Peter Anvin <hpa@zytor.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
2009-06-17x86: apic/io_apic.c: dmar_msi_type should be staticJaswinder Singh Rajput
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-17x86, io_apic.c: Work around compiler warningFigo.zhang
This compiler warning: arch/x86/kernel/apic/io_apic.c: In function ‘ioapic_write_entry’: arch/x86/kernel/apic/io_apic.c:466: warning: ‘eu’ is used uninitialized in this function arch/x86/kernel/apic/io_apic.c:465: note: ‘eu’ was declared here Is bogus as 'eu' is always initialized. But annotate it away by initializing the variable, to make it easier for people to notice real warnings. A compiler that sees through this logic will optimize away the initialization. Signed-off-by: Figo.zhang <figo1802@gmail.com> LKML-Reference: <1245248720.3312.27.camel@myhost> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-17x86: mce: Don't touch THERMAL_APIC_VECTOR if no active APIC presentCyrill Gorcunov
If APIC was disabled (for some reason) and as result it's not even mapped we should not try to enable thermal interrupts at all. Reported-by: Simon Holm Thøgersen <odie@cs.aau.dk> Tested-by: Simon Holm Thøgersen <odie@cs.aau.dk> Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> LKML-Reference: <20090615182633.GA7606@lenovo> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-17x86: mce: Handle banks == 0 case in K7 quirkAndi Kleen
Vegard Nossum reported: > I get an MCE-related crash like this in latest linus tree: > > [ 0.115341] CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line) > [ 0.116396] CPU: L2 Cache: 512K (64 bytes/line) > [ 0.120570] mce: CPU supports 0 MCE banks > [ 0.124870] BUG: unable to handle kernel NULL pointer dereference at 00000000 00000010 > [ 0.128001] IP: [<ffffffff813b98ad>] mcheck_init+0x278/0x320 > [ 0.128001] PGD 0 > [ 0.128001] Thread overran stack, or stack corrupted > [ 0.128001] Oops: 0002 [#1] PREEMPT SMP > [ 0.128001] last sysfs file: > [ 0.128001] CPU 0 > [ 0.128001] Modules linked in: > [ 0.128001] Pid: 0, comm: swapper Not tainted 2.6.30 #426 > [ 0.128001] RIP: 0010:[<ffffffff813b98ad>] [<ffffffff813b98ad>] mcheck_init+0x278/0x320 > [ 0.128001] RSP: 0018:ffffffff81595e38 EFLAGS: 00000246 > [ 0.128001] RAX: 0000000000000010 RBX: ffffffff8158f900 RCX: 0000000000000000 > [ 0.128001] RDX: 0000000000000000 RSI: 00000000000000ff RDI: 0000000000000010 > [ 0.128001] RBP: ffffffff81595e68 R08: 0000000000000001 R09: 0000000000000000 > [ 0.128001] R10: 0000000000000010 R11: 0000000000000000 R12: 0000000000000000 > [ 0.128001] R13: 00000000ffffffff R14: 0000000000000000 R15: 0000000000000000 > [ 0.128001] FS: 0000000000000000(0000) GS:ffff880002288000(0000) knlGS:00000 > 00000000000 > [ 0.128001] CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b > [ 0.128001] CR2: 0000000000000010 CR3: 0000000001001000 CR4: 00000000000006b0 > [ 0.128001] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > [ 0.128001] DR3: 0000000000000000 DR6: 0000000000000000 DR7: 0000000000000000 > [ 0.128001] Process swapper (pid: 0, threadinfo ffffffff81594000, task ffffff > ff8152a4a0) > [ 0.128001] Stack: > [ 0.128001] 0000000081595e68 5aa50ed3b4ddbe6e ffffffff8158f900 ffffffff8158f > 914 > [ 0.128001] ffffffff8158f948 0000000000000000 ffffffff81595eb8 ffffffff813b8 > 69c > [ 0.128001] 5aa50ed3b4ddbe6e 00000001078bfbfd 0000062300000800 5aa50ed3b4ddb > e6e > [ 0.128001] Call Trace: > [ 0.128001] [<ffffffff813b869c>] identify_cpu+0x331/0x392 > [ 0.128001] [<ffffffff815a1445>] identify_boot_cpu+0x23/0x6e > [ 0.128001] [<ffffffff815a14ac>] check_bugs+0x1c/0x60 > [ 0.128001] [<ffffffff8159c075>] start_kernel+0x403/0x46e > [ 0.128001] [<ffffffff8159b2ac>] x86_64_start_reservations+0xac/0xd5 > [ 0.128001] [<ffffffff8159b3ea>] x86_64_start_kernel+0x115/0x14b > [ 0.128001] [<ffffffff8159b140>] ? early_idt_handler+0x0/0x71 This happens on QEMU which reports MCA capability, but no banks. Without this patch there is a buffer overrun and boot ops because the code would try to initialize the 0 element of a zero length kmalloc() buffer. Reported-by: Vegard Nossum <vegard.nossum@gmail.com> Tested-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Andi Kleen <ak@linux.intel.com> LKML-Reference: <20090615125200.GD31969@one.firstfloor.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-17Merge branch 'linus' into x86/urgentIngo Molnar
Merge reason: pull in latest to fix a bug in it. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-16x86: correct the conversion of EFI memory typesCliff Wickman
This patch causes all the EFI_RESERVED_TYPE memory reservations to be recorded in the e820 table as type E820_RESERVED. (This patch replaces one called 'x86: vendor reserved memory type'. This version has been discussed a bit with Peter and Yinghai but not given a final opinion.) Without this patch EFI_RESERVED_TYPE memory reservations may be marked usable in the e820 table. There may be a collision between kernel use and some reserver's use of this memory. (An example use of this functionality is the UV system, which will access extremely large areas of memory with a memory engine that allows a user to address beyond the processor's range. Such areas are reserved in the EFI table by the BIOS. Some loaders have a restricted number of entries possible in the e820 table, hence the need to record the reservations in the unrestricted EFI table.) The call to do_add_efi_memmap() is only made if "add_efi_memmap" is specified on the kernel command line. Signed-off-by: Cliff Wickman <cpw@sgi.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-06-16x86: cap iomem_resource to addressable physical memoryH. Peter Anvin
iomem_resource is by default initialized to -1, which means 64 bits of physical address space if 64-bit resources are enabled. However, x86 CPUs cannot address 64 bits of physical address space. Thus, we want to cap the physical address space to what the union of all CPU can actually address. Without this patch, we may end up assigning inaccessible values to uninitialized 64-bit PCI memory resources. Signed-off-by: H. Peter Anvin <hpa@zytor.com> Cc: Matthew Wilcox <matthew@wil.cx> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: Martin Mares <mj@ucw.cz> Cc: stable@kernel.org
2009-06-16x86, mce: rename _64.c files which are no longer 64-bit-specificHidetoshi Seto
Rename files that are no longer 64bit specific: mce_amd_64.c => mce_amd.c mce_intel_64.c => mce_intel.c Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-06-16x86, mce: remove therm_throt.hHidetoshi Seto
Now all symbols in the header are static. Remove the header. Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-06-16x86, mce: remove intel_set_thermal_handler()Hidetoshi Seto
and make intel_thermal_interrupt() static. Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-06-16x86, mce: squash mce_intel.c into therm_throt.cHidetoshi Seto
move intel_init_thermal() into therm_throt.c Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-06-16x86, mce: unify smp_thermal_interruptHidetoshi Seto
Put common functions into therm_throt.c, modify Makefile. unexpected_thermal_interrupt intel_thermal_interrupt smp_thermal_interrupt intel_set_thermal_handler Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-06-16x86, mce: unify smp_thermal_interrupt, prepareHidetoshi Seto
Let them in same shape. Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-06-16x86, mce: unify smp_thermal_interrupt, prepare mce_intel_64Hidetoshi Seto
Break smp_thermal_interrupt() into two functions. Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-06-16x86, mce: unify smp_thermal_interrupt, prepare p4Hidetoshi Seto
Remove unused argument regs from handlers, and use inc_irq_stat. Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-06-16x86, mce: make mce_disabled booleanHidetoshi Seto
The mce_disabled on 32bit is a tristate variable [1,0,-1], while 64bit version is boolean [0,1]. This patch makes mce_disabled always boolean, and use mce_p5_enabled to indicate the third state instead. Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-06-16x86, mce: unify mce.hHidetoshi Seto
There are 2 headers: arch/x86/include/asm/mce.h arch/x86/kernel/cpu/mcheck/mce.h and in the latter small header: #include <asm/mce.h> This patch move all contents in the latter header into the former, and fix all files using the latter to include the former instead. Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-06-16x86, mce: sysfs entries for new mce optionsHidetoshi Seto
Add sysfs interface for admins who want to tweak these options without rebooting the system. Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-06-16x86, mce: rename static variables around triggerHidetoshi Seto
"trigger" is not straight forward name for valiable that holds name of user mode helper program which triggered by machine check events. This patch renames this valiable and kins to more recognizable names. trigger => mce_helper trigger_argv => mce_helper_argv notify_user => mce_need_notify No functional changes. Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-06-16x86, mce: add __read_mostlyHidetoshi Seto
Add __read_mostly to data written during setup. Suggested-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-06-16x86, mce: cleanup mce_start()Hidetoshi Seto
Simplify interface of mce_start(): - no_way_out = mce_start(no_way_out, &order); + order = mce_start(&no_way_out); Now Monarch and Subjects share same exit(return) in usual path. Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-06-16x86, mce: don't init timer if !mce_availableHidetoshi Seto
In mce_cpu_restart, mce_init_timer is called unconditionally. If !mce_available (e.g. mce is disabled), there are no useful work for timer. Stop running it. Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-06-16x86, mce: fix a race condition about mce_callin and no_way_outHuang Ying
If one CPU has no_way_out == 1, all other CPUs should have no_way_out == 1. But despite global_nwo is read after mce_callin, global_nwo is updated after mce_callin too. So it is possible that some CPU read global_nwo before some other CPU update global_nwo, so that no_way_out == 1 for some CPU, while no_way_out == 0 for some other CPU. This patch fixes this race condition via moving mce_callin updating after global_nwo updating, with a smp_wmb in between. A smp_rmb is added between their reading too. Signed-off-by: Huang Ying <ying.huang@intel.com> Acked-by: Andi Kleen <ak@linux.intel.com> Acked-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
2009-06-16Merge branch 'amd-iommu/fixes' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux-2.6-iommu into x86/urgent
2009-06-16amd-iommu: resume cleanupChris Wright
Now that enable_iommus() will call iommu_disable() for each iommu, the call to disable_iommus() during resume is redundant. Also, the order for an invalidation is to invalidate device table entries first, then domain translations. Signed-off-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-06-15Merge branch 'timers-for-linus-migration' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'timers-for-linus-migration' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: timers: Logic to move non pinned timers timers: /proc/sys sysctl hook to enable timer migration timers: Identifying the existing pinned timers timers: Framework for identifying pinned timers timers: allow deferrable timers for intervals tv2-tv5 to be deferred Fix up conflicts in kernel/sched.c and kernel/timer.c manually
2009-06-15amd-iommu: set event buffer head and tail to 0 manuallyJoerg Roedel
These registers may contain values from previous kernels. So reset them to known values before enable the event buffer again. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-06-15amd-iommu: disable cmd buffer and evt logging before reprogramming iommuChris Wright
The IOMMU spec states that IOMMU behavior may be undefined when the IOMMU registers are rewritten while command or event buffer is enabled. Disable them in IOMMU disable path. Signed-off-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-06-15amd-iommu: flush domain tlb when attaching a new deviceChris Wright
When kexec'ing to a new kernel (for example, when crashing and launching a kdump session), the AMD IOMMU may have cached translations. The kexec'd kernel, during initialization, will invalidate the IOMMU device table entries, but not the domain translations. These stale entries can cause a device's DMA to fail, makes it rough to write a dump to disk when the disk controller can't DMA ;-) Signed-off-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-06-15x86: disable IOMMUs on kernel crashJoerg Roedel
If the IOMMUs are still enabled when the kexec kernel boots access to the disk is not possible. This is bad for tools like kdump or anything else which wants to use PCI devices. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-06-15amd-iommu: disable IOMMU hardware on shutdownJoerg Roedel
When the IOMMU stays enabled the BIOS may not be able to finish the machine shutdown properly. So disable the hardware on shutdown. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-06-14x86: hpet: Mark per cpu interrupts IRQF_TIMER to prevent resume failureThomas Gleixner
timer interrupts are excluded from being disabled during suspend. The clock events code manages the disabling of clock events on its own because the timer interrupt needs to be functional before the resume code reenables the device interrupts. The hpet per cpu timers request their interrupt without setting the IRQF_TIMER flag so suspend_device_irqs() disables them as well which results in a fatal resume failure on the boot CPU. Adding IRQF_TIMER to the interupt flags when requesting the hpet per cpu timer interrupts solves the problem. Reported-by: Benjamin S. <sbenni@gmx.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Benjamin S. <sbenni@gmx.de> Cc: stable@kernel.org
2009-06-13Merge branch 'x86-mce-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-mce-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (80 commits) x86, mce: Add boot options for corrected errors x86, mce: Fix mce printing x86, mce: fix for mce counters x86, mce: support action-optional machine checks x86, mce: define MCE_VECTOR x86, mce: rename mce_notify_user to mce_notify_irq x86: fix panic with interrupts off (needed for MCE) x86, mce: export MCE severities coverage via debugfs x86, mce: implement new status bits x86, mce: print header/footer only once for multiple MCEs x86, mce: default to panic timeout for machine checks x86, mce: improve mce_get_rip x86, mce: make non Monarch panic message "Fatal machine check" too x86, mce: switch x86 machine check handler to Monarch election. x86, mce: implement panic synchronization x86, mce: implement bootstrapping for machine check wakeups x86, mce: check early in exception handler if panic is needed x86, mce: add table driven machine check grading x86, mce: remove TSC print heuristic x86, mce: log corrected errors when panicing ...
2009-06-12Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6: PM: Add empty suspend/resume device irq functions PM/Hibernate: Move NVS routines into a seperate file (v2). PM/Hibernate: Rename disk.c to hibernate.c PM: Separate suspend to RAM functionality from core Driver Core: Rework platform suspend/resume, print warning PM: Remove device_type suspend()/resume() PM/Hibernate: Move memory shrinking to snapshot.c (rev. 2) PM/Suspend: Do not shrink memory before suspend PM: Remove bus_type suspend_late()/resume_early() V2 PM core: rename suspend and resume functions PM: Rename device_power_down/up() PM: Remove unused asm/suspend.h x86: unify power/cpu_(32|64).c x86: unify power/cpu_(32|64) copyright notes x86: unify power/cpu_(32|64) regarding restoring processor state x86: unify power/cpu_(32|64) regarding saving processor state x86: unify power/cpu_(32|64) global variables x86: unify power/cpu_(32|64) headers PM: Warn if interrupts are enabled during suspend-resume of sysdevs PM/ACPI/x86: Fix sparse warning in arch/x86/kernel/acpi/sleep.c
2009-06-12Merge branch 'perfcounters-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perfcounters-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf_counter: Start documenting HAVE_PERF_COUNTERS requirements perf_counter: Add forward/backward attribute ABI compatibility perf record: Explicity program a default counter perf_counter: Remove PERF_TYPE_RAW special casing perf_counter: PERF_TYPE_HW_CACHE is a hardware counter too powerpc, perf_counter: Fix performance counter event types perf_counter/x86: Add a quirk for Atom processors perf_counter tools: Remove one L1-data alias
2009-06-12PM core: rename suspend and resume functionsAlan Stern
This patch (as1241) renames a bunch of functions in the PM core. Rather than go through a boring list of name changes, suffice it to say that in the end we have a bunch of pairs of functions: device_resume_noirq dpm_resume_noirq device_resume dpm_resume device_complete dpm_complete device_suspend_noirq dpm_suspend_noirq device_suspend dpm_suspend device_prepare dpm_prepare in which device_X does the X operation on a single device and dpm_X invokes device_X for all devices in the dpm_list. In addition, the old dpm_power_up and device_resume_noirq have been combined into a single function (dpm_resume_noirq). Lastly, dpm_suspend_start and dpm_resume_end are the renamed versions of the former top-level device_suspend and device_resume routines. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Acked-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2009-06-12PM: Rename device_power_down/up()Magnus Damm
Rename the functions performing "_noirq" dev_pm_ops operations from device_power_down() and device_power_up() to device_suspend_noirq() and device_resume_noirq(). The new function names are chosen to show that the functions are responsible for calling the _noirq() versions to finalize the suspend/resume operation. The current function names do not perform power down/up anymore so the names may be misleading. Global function renames: - device_power_down() -> device_suspend_noirq() - device_power_up() -> device_resume_noirq() Static function renames: - suspend_device_noirq() -> __device_suspend_noirq() - resume_device_noirq() -> __device_resume_noirq() Signed-off-by: Magnus Damm <damm@igel.co.jp> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-by: Len Brown <lenb@kernel.org> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2009-06-12PM/ACPI/x86: Fix sparse warning in arch/x86/kernel/acpi/sleep.cJaswinder Singh Rajput
One of the numbers in arch/x86/kernel/acpi/sleep.c is long, but it is not annotated appropriately, so sparese warns about it. Fix that. [rjw: added the changelog.] Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2009-06-12Merge branch 'topic/slab/earlyboot-v2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6 * 'topic/slab/earlyboot-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6: slab: setup cpu caches later on when interrupts are enabled slab,slub: don't enable interrupts during early boot slab: fix gfp flag in setup_cpu_cache() x86: make zap_low_mapping could be used early irq: slab alloc for default irq_affinity memcg: fix page_cgroup fatal error in FLATMEM
2009-06-12Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-lguestLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-lguest: (31 commits) lguest: add support for indirect ring entries lguest: suppress notifications in example Launcher lguest: try to batch interrupts on network receive lguest: avoid sending interrupts to Guest when no activity occurs. lguest: implement deferred interrupts in example Launcher lguest: remove obsolete LHREQ_BREAK call lguest: have example Launcher service all devices in separate threads lguest: use eventfds for device notification eventfd: export eventfd_signal and eventfd_fget for lguest lguest: allow any process to send interrupts lguest: PAE fixes lguest: PAE support lguest: Add support for kvm_hypercall4() lguest: replace hypercall name LHCALL_SET_PMD with LHCALL_SET_PGD lguest: use native_set_* macros, which properly handle 64-bit entries when PAE is activated lguest: map switcher with executable page table entries lguest: fix writev returning short on console output lguest: clean up length-used value in example launcher lguest: Segment selectors are 16-bit long. Fix lg_cpu.ss1 definition. lguest: beyond ARRAY_SIZE of cpu->arch.gdt ...
2009-06-12Merge ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-module-and-param * git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-module-and-param: module: cleanup FIXME comments about trimming exception table entries. module: trim exception table on init free. module: merge module_alloc() finally uml module: fix uml build process due to this merge x86 module: merge the rest functions with macros x86 module: merge the same functions in module_32.c and module_64.c uvesafb: improve parameter handling. module_param: allow 'bool' module_params to be bool, not just int. module_param: add __same_type convenience wrapper for __builtin_types_compatible_p module_param: split perm field into flags and perm module_param: invbool should take a 'bool', not an 'int' cyber2000fb.c: use proper method for stopping unload if CONFIG_ARCH_SHARK
2009-06-12Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: Provide _sdata in the vmlinux.lds.S file x86: handle initrd that extends into unusable memory
2009-06-12lguest: optimize by coding restore_flags and irq_enable in assembler.Rusty Russell
The downside of the last patch which made restore_flags and irq_enable check interrupts is that they are now too big to be patched directly into the callsites, so the C versions are always used. But the C versions go via PV_CALLEE_SAVE_REGS_THUNK which saves all the registers. In fact, we don't need any registers in the fast path, so we can do better than this if we actually code them in assembler. The results are in the noise, but since it's about the same amount of code, it's worth applying. 1GB Guest->Host: input(suppressed),output(suppressed) Before: Seconds: 0:16.53 Packets: 377268,753673 Interrupts: 22461,24297 Notifications: 1(5245),21303(732370) Net IRQs triggered: 377023(245),42578(711095) After: Seconds: 0:16.48 Packets: 377289,753673 Interrupts: 22281,24465 Notifications: 1(5245),21296(732377) Net IRQs triggered: 377060(229),42564(711109) Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2009-06-12module: cleanup FIXME comments about trimming exception table entries.Rusty Russell
Everyone cut and paste this comment from my original one. We now do it generically, so cut the comments. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Amerigo Wang <amwang@redhat.com>
2009-06-12module: merge module_alloc() finallyAmerigo Wang
As Christoph Hellwig suggested, module_alloc() actually can be unified for i386 and x86_64 (of course, also UML). Signed-off-by: WANG Cong <amwang@redhat.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: 'Ingo Molnar' <mingo@elte.hu> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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