From: Bhushan Bharat-R65777 <r65...@freescale.com>
If there is pending critical or machine check interrupt then guest
would like to capture it when guest enable MSR.CE and MSR_ME respectively.
Also as mostly MSR_CE and MSR_ME are updated with rfi/rfci/rfmii
which anyway traps so removing the the paravirt optimization for MSR.CE
and MSR.ME.
Signed-off-by: Bharat Bhushan <bharat.bhus...@freescale.com>
---
Documentation/virtual/kvm/ppc-pv.txt | 2 --
arch/powerpc/kernel/kvm_emul.S | 2 +-
2 files changed, 1 insertions(+), 3 deletions(-)
diff --git a/Documentation/virtual/kvm/ppc-pv.txt
b/Documentation/virtual/kvm/ppc-pv.txt
index 6e7c370..4911cf9 100644
--- a/Documentation/virtual/kvm/ppc-pv.txt
+++ b/Documentation/virtual/kvm/ppc-pv.txt
@@ -109,8 +109,6 @@ The following bits are safe to be set inside the guest:
MSR_EE
MSR_RI
- MSR_CR
- MSR_ME
If any other bit changes in the MSR, please still use mtmsr(d).
diff --git a/arch/powerpc/kernel/kvm_emul.S b/arch/powerpc/kernel/kvm_emul.S
index e291cf3..3dfa890 100644
--- a/arch/powerpc/kernel/kvm_emul.S
+++ b/arch/powerpc/kernel/kvm_emul.S
@@ -132,7 +132,7 @@ kvm_emulate_mtmsrd_len:
.long (kvm_emulate_mtmsrd_end - kvm_emulate_mtmsrd) / 4
-#define MSR_SAFE_BITS (MSR_EE | MSR_CE | MSR_ME | MSR_RI)
+#define MSR_SAFE_BITS (MSR_EE | MSR_RI)
#define MSR_CRITICAL_BITS ~MSR_SAFE_BITS
.global kvm_emulate_mtmsr
--
1.7.0.4
--
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