Avi Kivity 95ef1e5292 KVM guest: prevent tracing recursion with kvmclock ...

Prevent tracing of preempt_disable() in get_cpu_var() in
kvm_clock_read(). When CONFIG_DEBUG_PREEMPT is enabled,
preempt_disable/enable() are traced and this causes the function_graph
tracer to go into an infinite recursion. By open coding the
preempt_disable() around the get_cpu_var(), we can use the notrace
version which prevents preempt_disable/enable() from being traced and
prevents the recursion.

Based on a similar patch for Xen from Jeremy Fitzhardinge.

Tested-by: Gleb Natapov <gleb@redhat.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Avi Kivity <avi@redhat.com>

2011-11-20 10:53:48 +02:00

..

acpi

x86 idle: move mwait_idle_with_hints() to where it is used

2011-08-03 19:06:36 -04:00

apic

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

2011-10-28 05:43:56 -07:00

cpu

Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2011-11-06 19:44:47 -08:00

.gitignore

…

alternative.c

x86-64: Move vread_tsc and vread_hpet into the vDSO

2011-07-14 17:57:05 -07:00

amd_gart_64.c

doc: fix broken references

2011-09-27 18:08:04 +02:00

amd_nb.c

x86, amd-nb: Rename CPU PCI id define for F4

2011-03-31 08:51:38 +02:00

apb_timer.c

Merge branch 'timers-clocksource-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2011-07-23 10:34:47 -07:00

aperture_64.c

x86, gart: Don't enforce GART aperture lower-bound by alignment

2011-04-18 10:31:38 -07:00

apm_32.c

doc: fix broken references

2011-09-27 18:08:04 +02:00

asm-offsets_32.c

lguest: use a special 1:1 linear pagetable mode until first switch.

2011-07-22 14:39:48 +09:30

asm-offsets_64.c

x86: Partly unify asm-offsets_{32,64}.c

2011-02-10 13:31:37 +01:00

asm-offsets.c

x86, asm: Cleanup unnecssary macros in asm-offsets.c

2011-02-25 16:37:32 -08:00

audit_64.c

…

bootflag.c

…

check.c

x86: Don't check for BIOS corruption in first 64K when there's no need to

2011-03-09 16:36:41 +01:00

cpuid.c

…

crash_dump_32.c

crash_dump: export is_kdump_kernel to modules, consolidate elfcorehdr_addr, setup_elfcorehdr and saved_max_pfn

2011-03-23 19:47:19 -07:00

crash_dump_64.c

crash_dump: export is_kdump_kernel to modules, consolidate elfcorehdr_addr, setup_elfcorehdr and saved_max_pfn

2011-03-23 19:47:19 -07:00

crash.c

x86, nmi: Wire up NMI handlers to new routines

2011-10-10 06:56:57 +02:00

devicetree.c

x86: Fix files explicitly requiring export.h for EXPORT_SYMBOL/THIS_MODULE

2011-10-31 19:30:35 -04:00

doublefault_32.c

…

dumpstack_32.c

x86, dumpstack: Correct stack dump info when frame pointer is available

2011-03-18 10:51:42 +01:00

dumpstack_64.c

x86: Don't use frame pointer to save old stack on irq entry

2011-07-02 18:06:36 +02:00

dumpstack.c

Merge branch 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6

2011-05-19 18:24:11 -07:00

e820.c

x86: Fix files explicitly requiring export.h for EXPORT_SYMBOL/THIS_MODULE

2011-10-31 19:30:35 -04:00

early_printk.c

…

early-quirks.c

x86, quirk: Fix SB600 revision check

2011-03-16 14:03:32 +01:00

entry_32.S

x86-32: Fix boot with CONFIG_X86_INVD_BUG

2011-08-25 13:27:14 -07:00

entry_64.S

x86-64: Fix CFI data for interrupt frames

2011-09-28 19:04:52 +02:00

ftrace.c

x86/ftrace: Fix compiler warning in ftrace.c

2011-05-25 19:56:26 -04:00

head32.c

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

2011-05-19 18:08:06 -07:00

head64.c

x86: Cleanup highmap after brk is concluded

2011-03-19 11:58:19 -07:00

head_32.S

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

2011-03-15 20:01:36 -07:00

head_64.S

x86, trampoline: Common infrastructure for low memory trampolines

2011-02-17 21:02:43 -08:00

head.c

…

hpet.c

x86: Fix files explicitly requiring export.h for EXPORT_SYMBOL/THIS_MODULE

2011-10-31 19:30:35 -04:00

hw_breakpoint.c

x86: Use this_cpu_ops to optimize code

2010-12-30 12:20:28 +01:00

i386_ksyms_32.c

…

i387.c

treewide: fix potentially dangerous trailing ';' in #defined values/expressions

2011-07-21 14:10:00 +02:00

i8237.c

x86: Use syscore_ops instead of sysdev classes and sysdevs

2011-03-23 22:15:54 +01:00

i8253.c

x86: Use common i8253 clockevent

2011-07-01 10:37:14 +02:00

i8259.c

atomic: use <linux/atomic.h>

2011-07-26 16:49:47 -07:00

init_task.c

…

io_delay.c

…

ioport.c

x86: Use bitmap library functions

2011-02-17 14:59:22 +01:00

irq_32.c

x86: Fix common misspellings

2011-03-18 10:39:30 +01:00

irq_64.c

…

irq_work.c

…

irq.c

x86: Fix files explicitly requiring export.h for EXPORT_SYMBOL/THIS_MODULE

2011-10-31 19:30:35 -04:00

irqinit.c

atomic: use <linux/atomic.h>

2011-07-26 16:49:47 -07:00

jump_label.c

x86/jump_label: add arch_jump_label_transform_static()

2011-10-25 11:54:42 -07:00

kdebugfs.c

…

kgdb.c

x86, nmi: Wire up NMI handlers to new routines

2011-10-10 06:56:57 +02:00

kprobes.c

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

2011-10-26 17:03:38 +02:00

kvm.c

KVM guest: KVM Steal time registration

2011-07-24 11:49:36 +03:00

kvmclock.c

KVM guest: prevent tracing recursion with kvmclock

2011-11-20 10:53:48 +02:00

ldt.c

…

machine_kexec_32.c

…

machine_kexec_64.c

…

Makefile

x86, nmi: Split out nmi from traps.c

2011-10-10 06:56:47 +02:00

mca_32.c

x86: Fix common misspellings

2011-03-18 10:39:30 +01:00

microcode_amd.c

x86, microcode, AMD: Add microcode revision to /proc/cpuinfo

2011-10-19 16:07:30 +02:00

microcode_core.c

x86, microcode: Don't request microcode from userspace unnecessarily

2011-10-13 16:20:35 +02:00

microcode_intel.c

x86, intel: Output microcode revision in /proc/cpuinfo

2011-10-14 13:16:35 +02:00

mmconf-fam10h_64.c

…

module.c

modules: make arch's use default loader hooks

2011-07-24 22:06:04 +09:30

mpparse.c

x86, ioapic: Consolidate mp_ioapics[] into 'struct ioapic'

2011-05-20 13:40:59 +02:00

msr.c

…

nmi.c

x86: Fix files explicitly requiring export.h for EXPORT_SYMBOL/THIS_MODULE

2011-10-31 19:30:35 -04:00

paravirt_patch_32.c

…

paravirt_patch_64.c

…

paravirt-spinlocks.c

…

paravirt.c

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

2011-08-12 20:46:24 -07:00

pci-calgary_64.c

treewide: Convert uses of struct resource to resource_size(ptr)

2011-06-10 14:55:36 +02:00

pci-dma.c

x86: Fix files explicitly requiring export.h for EXPORT_SYMBOL/THIS_MODULE

2011-10-31 19:30:35 -04:00

pci-iommu_table.c

arch/x86/kernel/pci-iommu_table.c: Convert sprintf_symbol to %pS

2011-05-10 10:21:35 +02:00

pci-nommu.c

…

pci-swiotlb.c

…

pcspeaker.c

…

probe_roms.c

x86: Fix files explicitly requiring export.h for EXPORT_SYMBOL/THIS_MODULE

2011-10-31 19:30:35 -04:00

process_32.c

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

2011-10-26 17:03:38 +02:00

process_64.c

x86, nmi: Add in logic to handle multiple events and unknown NMIs

2011-10-10 06:57:01 +02:00

process.c

x86, mm, trivial: Remove unnecessary get_order() in free_thread_info()

2011-08-23 21:49:35 +02:00

ptrace.c

perf: Add context field to perf_event

2011-07-01 11:06:38 +02:00

pvclock.c

…

quirks.c

x86, quirks: Use pci_dev->revision

2011-07-21 10:26:00 +02:00

reboot_32.S

x86, reboot: Fix relocations in reboot_32.S

2011-05-02 14:44:46 -07:00

reboot_fixups_32.c

…

reboot.c

x86, nmi: Wire up NMI handlers to new routines

2011-10-10 06:56:57 +02:00

relocate_kernel_32.S

kexec, x86: Fix incorrect jump back address if not preserving context

2011-07-21 11:19:28 +02:00

relocate_kernel_64.S

kexec, x86: Fix incorrect jump back address if not preserving context

2011-07-21 11:19:28 +02:00

resource.c

x86: avoid high BIOS area when allocating address space

2010-12-17 10:01:30 -08:00

rtc.c

x86: Fix files explicitly requiring export.h for EXPORT_SYMBOL/THIS_MODULE

2011-10-31 19:30:35 -04:00

setup_percpu.c

x86: Unify CPU -> NUMA node mapping between 32 and 64bit

2011-01-28 14:54:09 +01:00

setup.c

Merge branch 'linus' into x86/urgent

2011-05-26 13:51:35 +02:00

signal.c

x86: Kill handle_signal()->set_fs()

2011-07-14 21:46:20 -07:00

smp.c

x86: Fix files explicitly requiring export.h for EXPORT_SYMBOL/THIS_MODULE

2011-10-31 19:30:35 -04:00

smpboot.c

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

2011-07-22 17:02:38 -07:00

stacktrace.c

x86: Swap save_stack_trace_regs parameters

2011-06-14 22:48:51 -04:00

step.c

x86-64: Add user_64bit_mode paravirt op

2011-08-04 16:13:49 -07:00

sys_i386_32.c

…

sys_x86_64.c

x86, amd: Include linux/elf.h since we use stuff from asm/elf.h

2011-09-28 10:34:31 +02:00

syscall_64.c

…

syscall_table_32.S

Cross Memory Attach

2011-10-31 17:30:44 -07:00

tboot.c

x86: Fix files explicitly requiring export.h for EXPORT_SYMBOL/THIS_MODULE

2011-10-31 19:30:35 -04:00

tce_64.c

…

test_nx.c

x86: Eliminate various 'set but not used' warnings

2011-05-21 19:10:33 +02:00

test_rodata.c

…

time.c

x86: Fix files explicitly requiring export.h for EXPORT_SYMBOL/THIS_MODULE

2011-10-31 19:30:35 -04:00

tls.c

…

tls.h

…

topology.c

x86: Fix files explicitly requiring export.h for EXPORT_SYMBOL/THIS_MODULE

2011-10-31 19:30:35 -04:00

trampoline_32.S

x86, trampoline: Common infrastructure for low memory trampolines

2011-02-17 21:02:43 -08:00

trampoline_64.S

x86-64, trampoline: Remove unused variable

2011-02-18 15:50:36 -08:00

trampoline.c

x86, trampoline: Common infrastructure for low memory trampolines

2011-02-17 21:02:43 -08:00

traps.c

x86, nmi: Split out nmi from traps.c

2011-10-10 06:56:47 +02:00

tsc_sync.c

…

tsc.c

Merge branches 'x86-detect-hyper-for-linus', 'x86-fpu-for-linus', 'x86-kexec-for-linus', 'x86-platform-for-linus', 'x86-quirks-for-linus', 'x86-tsc-for-linus' and 'x86-smpboot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2011-07-23 10:38:21 -07:00

verify_cpu.S

x86: Fix common misspellings

2011-03-18 10:39:30 +01:00

vm86_32.c

thp: split_huge_page_mm/vma

2011-01-13 17:32:41 -08:00

vmlinux.lds.S

x86-64: Rework vsyscall emulation and add vsyscall= parameter

2011-08-10 19:26:46 -05:00

vsmp_64.c

…

vsyscall_64.c

x86: fix implicit include of <linux/topology.h> in vsyscall_64

2011-10-31 19:30:34 -04:00

vsyscall_emu_64.S

x86-64: Rework vsyscall emulation and add vsyscall= parameter

2011-08-10 19:26:46 -05:00

vsyscall_trace.h

x86-64: Add vsyscall:emulate_vsyscall trace event

2011-08-04 16:13:53 -07:00

x86_init.c

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

2011-05-19 18:08:06 -07:00

x8664_ksyms_64.c

x86-64, mem: Convert memmove() to assembly file and fix return value bug

2011-01-25 16:58:39 -08:00

xsave.c

x86: Fix common misspellings

2011-03-18 10:39:30 +01:00