Stephane Eranian 9a9b01c04e perf,x86: fix kernel crash with PEBS/BTS after suspend/resume ... commit 1d9d8639c0 upstream. This patch fixes a kernel crash when using precise sampling (PEBS) after a suspend/resume. Turns out the CPU notifier code is not invoked on CPU0 (BP). Therefore, the DS_AREA (used by PEBS) is not restored properly by the kernel and keeps it power-on/resume value of 0 causing any PEBS measurement to crash when running on CPU0. The workaround is to add a hook in the actual resume code to restore the DS Area MSR value. It is invoked for all CPUS. So for all but CPU0, the DS_AREA will be restored twice but this is harmless. Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Stephane Eranian <eranian@google.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2013-03-20 13:04:59 -07:00
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cpu.c	perf,x86: fix kernel crash with PEBS/BTS after suspend/resume	2013-03-20 13:04:59 -07:00
hibernate_32.c	x86-32, mm: Remove reference to resume_map_numa_kva()	2013-02-28 06:58:58 -08:00
hibernate_64.c
hibernate_asm_32.S
hibernate_asm_64.S
Makefile