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d825a04387
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Alexander Graf d825a04387 KVM: PPC: Book3S: PR: Don't clobber our exit handler id 
We call a C helper to save all svcpu fields into our vcpu. The C
ABI states that r12 is considered volatile. However, we keep our
exit handler id in r12 currently.

So we need to save it away into a non-volatile register instead
that definitely does get preserved across the C call.

This bug usually didn't hit anyone yet since gcc is smart enough
to generate code that doesn't even need r12 which means it stayed
identical throughout the call by sheer luck. But we can't rely on
that.

Signed-off-by: Alexander Graf <agraf@suse.de>
2013-12-09 09:41:26 +01:00
..
alpha kernel: remove CONFIG_USE_GENERIC_SMP_HELPERS 2013-11-15 09:32:22 +09:00
arc kernel: remove CONFIG_USE_GENERIC_SMP_HELPERS 2013-11-15 09:32:22 +09:00
arm Here are the 3.13 KVM changes. There was a lot of work on the PPC 2013-11-15 13:51:36 +09:00
arm64 Here are the 3.13 KVM changes. There was a lot of work on the PPC 2013-11-15 13:51:36 +09:00
avr32 avr32: handle pgtable_page_ctor() fail 2013-11-15 09:32:17 +09:00
blackfin kernel: remove CONFIG_USE_GENERIC_SMP_HELPERS 2013-11-15 09:32:22 +09:00
c6x DeviceTree updates for 3.13. This is a bit larger pull request than 2013-11-12 16:52:17 +09:00
cris cris: handle pgtable_page_ctor() fail 2013-11-15 09:32:17 +09:00
frv frv: handle pgtable_page_ctor() fail 2013-11-15 09:32:17 +09:00
hexagon kernel: remove CONFIG_USE_GENERIC_SMP_HELPERS 2013-11-15 09:32:22 +09:00
ia64 Here are the 3.13 KVM changes. There was a lot of work on the PPC 2013-11-15 13:51:36 +09:00
m32r kernel: remove CONFIG_USE_GENERIC_SMP_HELPERS 2013-11-15 09:32:22 +09:00
m68k m68k: handle pgtable_page_ctor() fail 2013-11-15 09:32:17 +09:00
metag kernel: remove CONFIG_USE_GENERIC_SMP_HELPERS 2013-11-15 09:32:22 +09:00
microblaze microblaze: add missing pgtable_page_ctor/dtor calls 2013-11-15 09:32:16 +09:00
mips Here are the 3.13 KVM changes. There was a lot of work on the PPC 2013-11-15 13:51:36 +09:00
mn10300 kernel: remove CONFIG_USE_GENERIC_SMP_HELPERS 2013-11-15 09:32:22 +09:00
openrisc openrisc: add missing pgtable_page_ctor/dtor calls 2013-11-15 09:32:16 +09:00
parisc kernel: remove CONFIG_USE_GENERIC_SMP_HELPERS 2013-11-15 09:32:22 +09:00
powerpc KVM: PPC: Book3S: PR: Don't clobber our exit handler id 2013-12-09 09:41:26 +01:00
s390 Here are the 3.13 KVM changes. There was a lot of work on the PPC 2013-11-15 13:51:36 +09:00
score score: handle pgtable_page_ctor() fail 2013-11-15 09:32:18 +09:00
sh kernel: remove CONFIG_USE_GENERIC_SMP_HELPERS 2013-11-15 09:32:22 +09:00
sparc kernel: remove CONFIG_USE_GENERIC_SMP_HELPERS 2013-11-15 09:32:22 +09:00
tile kernel: remove CONFIG_USE_GENERIC_SMP_HELPERS 2013-11-15 09:32:22 +09:00
um um: handle pgtable_page_ctor() fail 2013-11-15 09:32:19 +09:00
unicore32 unicore32: handle pgtable_page_ctor() fail 2013-11-15 09:32:19 +09:00
x86 Here are the 3.13 KVM changes. There was a lot of work on the PPC 2013-11-15 13:51:36 +09:00
xtensa xtensa: use buddy allocator for PTE table 2013-11-15 09:32:19 +09:00
.gitignore
Kconfig kernel: remove CONFIG_USE_GENERIC_SMP_HELPERS 2013-11-15 09:32:22 +09:00