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Subject[PATCH 3.16.y-ckt 094/144] powerpc/book3s: Fix the MCE code to use CONFIG_KVM_BOOK3S_64_HANDLER
3.16.7-ckt10 -stable review patch.  If anyone has any objections, please let me know.


From: Mahesh Salgaonkar <>

commit 44d5f6f5901e996744858c175baee320ccf1eda3 upstream.

commit id 2ba9f0d has changed CONFIG_KVM_BOOK3S_64_HV to tristate to allow
HV/PR bits to be built as modules. But the MCE code still depends on
CONFIG_KVM_BOOK3S_64_HV which is wrong. When user selects
CONFIG_KVM_BOOK3S_64_HV=m to build HV/PR bits as a separate module the
relevant MCE code gets excluded.

This patch fixes the MCE code to use CONFIG_KVM_BOOK3S_64_HANDLER. This
makes sure that the relevant MCE code is included when HV/PR bits
are built as a separate modules.

Fixes: 2ba9f0d88750 ("kvm: powerpc: book3s: Support building HV and PR KVM as module")
Signed-off-by: Mahesh Salgaonkar <>
Acked-by: Paul Mackerras <>
Signed-off-by: Michael Ellerman <>
Signed-off-by: Luis Henriques <>
arch/powerpc/kernel/exceptions-64s.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index a7d36b19221d..246740cc796e 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -1442,7 +1442,7 @@ machine_check_handle_early:
bne 9f /* continue in V mode if we are. */

* We are coming from kernel context. Check if we are coming from
* guest. if yes, then we can continue. We will fall through

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