4.2-stable review patch. If anyone has any objections, please let me know.
------------------
From: "Gautham R. Shenoy" <e...@linux.vnet.ibm.com>
commit 7e022e717f54897e396504306d0c9b61452adf4e upstream.
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.
Fixes: eddb60fb1443
Signed-off-by: Gautham R. Shenoy <e...@linux.vnet.ibm.com>
Signed-off-by: Paul Mackerras <pau...@samba.org>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
arch/powerpc/kvm/book3s_hv_rmhandlers.S | 1 +
1 file changed, 1 insertion(+)
--- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
@@ -1171,6 +1171,7 @@ mc_cont:
bl kvmhv_accumulate_time
#endif
+ mr r3, r12
/* Increment exit count, poke other threads to exit */
bl kvmhv_commence_exit
nop
--
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