Linus Torvalds 2a6e06b2ae perf,x86: fix wrmsr_on_cpu() warning on suspend/resume ... Commit 1d9d8639c0 ("perf,x86: fix kernel crash with PEBS/BTS after suspend/resume") fixed a crash when doing PEBS performance profiling after resuming, but in using init_debug_store_on_cpu() to restore the DS_AREA mtrr it also resulted in a new WARN_ON() triggering. init_debug_store_on_cpu() uses "wrmsr_on_cpu()", which in turn uses CPU cross-calls to do the MSR update. Which is not really valid at the early resume stage, and the warning is quite reasonable. Now, it all happens to _work_, for the simple reason that smp_call_function_single() ends up just doing the call directly on the CPU when the CPU number matches, but we really should just do the wrmsr() directly instead. This duplicates the wrmsr() logic, but hopefully we can just remove the wrmsr_on_cpu() version eventually. Reported-and-tested-by: Parag Warudkar <parag.lkml@gmail.com> Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2013-03-17 15:44:43 -07:00
..
boot	Merge branch 'x86-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-02-27 16:17:42 -08:00
configs
crypto	Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2013-02-25 15:56:15 -08:00
ia32	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal	2013-03-02 08:34:06 -08:00
include	x86, doc: Be explicit about what the x86 struct boot_params requires	2013-03-06 20:34:43 -08:00
kernel	perf,x86: fix wrmsr_on_cpu() warning on suspend/resume	2013-03-17 15:44:43 -07:00
kvm	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
lguest	Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-02-21 18:06:55 -08:00
lib
math-emu
mm	x86: Do not try to sync identity map for non-mapped pages	2013-03-07 13:23:28 -08:00
net
oprofile
pci	Bug-fixes:	2013-03-03 14:22:53 -08:00
platform	Merge branch 'x86-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-02-27 16:17:42 -08:00
power	perf,x86: fix kernel crash with PEBS/BTS after suspend/resume	2013-03-15 09:26:35 -07:00
realmode
syscalls	fix compat truncate/ftruncate	2013-02-25 09:24:55 -05:00
tools
um	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal	2013-02-23 18:50:11 -08:00
vdso	timers/x86/hpet: Use HPET_COUNTER to specify the hpet counter in vread_hpet()	2013-02-15 12:13:18 +01:00
video
xen	xen/pat: Disable PAT using pat_enabled value.	2013-02-28 09:03:00 -05:00
.gitignore
Kbuild
Kconfig	Select VIRT_TO_BUS directly where needed	2013-03-12 11:16:40 -07:00
Kconfig.cpu
Kconfig.debug
Makefile	Merge branch 'x86-build-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-02-19 19:12:03 -08:00
Makefile_32.cpu
Makefile.um