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ARM: KVM: fix unbalanced get_cpu() in access_dcsw
authorMarc Zyngier <marc.zyngier@arm.com>
Wed, 17 Apr 2013 19:09:09 +0000 (12:09 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 17 Apr 2013 19:51:32 +0000 (12:51 -0700)
commit15bbc1b28ff65767922f78c266821cc138b90a47
tree419287be95672919211746e6657be7f56c19ab06tree | snapshot
parentfca83168aae6fa0c36a923ef99311587ad5b54f2commit | diff
ARM: KVM: fix unbalanced get_cpu() in access_dcsw

In the very unlikely event where a guest would be foolish enough to
*read* from a write-only cache maintainance register, we end up
with preemption disabled, due to a misplaced get_cpu().

Just move the "is_write" test outside of the critical section.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <cdall@cs.columbia.edu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
arch/arm/kvm/coproc.c diff | blob | history
Domain: System / Kernel;