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KVM: PPC: Book3S HV: Pass the correct trap argument to kvmhv_commence_exit

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In guest_exit_cont we call kvmhv_commence_exit which expects the trap
number as the argument. However r3 doesn't contain the trap number at
this point and as a result we would be calling the function with a
spurious trap number.

Fix this by copying r12 into r3 before calling kvmhv_commence_exit as
r12 contains the trap number.

Cc: stable@vger.kernel.org # v4.1+
Fixes: eddb60fb14
Signed-off-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Gautham R. Shenoy 2015-05-21 13:57:04 +05:30 committed by Paul Mackerras
parent 5fc3e64f94
commit 7e022e717f
1 changed files with 1 additions and 0 deletions
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arch/powerpc/kvm/book3s_hv_rmhandlers.S
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@ -1257,6 +1257,7 @@ mc_cont:
bl kvmhv_accumulate_time
#endif
mr r3, r12
/* Increment exit count, poke other threads to exit */
bl kvmhv_commence_exit
nop