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
..
acpi	Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux	2012-05-05 10:06:06 -07:00
asm-generic	mm: limit mmu_gather batching to fix soft lockups on !CONFIG_PREEMPT	2013-01-11 09:07:18 -08:00
crypto	crypto: user - Fix lookup of algorithms with IV generator	2012-03-29 19:52:47 +08:00
drm	drm/radeon: add new SI pci id	2012-12-03 11:47:01 -08:00
keys
linux	perf,x86: fix kernel crash with PEBS/BTS after suspend/resume	2013-03-20 13:04:59 -07:00
math-emu
media	Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media	2012-05-14 11:23:37 -07:00
misc
mtd
net	ipv6: use a stronger hash for tcp	2013-02-28 06:59:06 -08:00
pcmcia
rdma	infiniband: pass rdma_cm module to netlink_dump_start	2012-10-28 10:14:15 -07:00
rxrpc
scsi	SCSI: libsas: fix taskfile corruption in sas_ata_qc_fill_rtf	2012-07-16 09:04:37 -07:00
sound	ALSA: Add a reference counter to card instance	2012-11-17 13:16:13 -08:00
target	target: Add link_magic for fabric allow_link destination target_items	2013-01-21 11:45:24 -08:00
trace	xen/mmu: Use Xen specific TLB flush instead of the generic one.	2012-11-17 13:15:54 -08:00
video	Merge branch 'platforms' of git://git.linaro.org/people/rmk/linux-arm	2012-03-27 18:17:02 -07:00
xen	xen/m2p: do not reuse kmap_op->dev_bus_addr	2012-10-02 10:30:06 -07:00
Kbuild