KVM: PPC: Not optimizing MSR_CE and MSR_ME with paravirt.

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.bhushan@freescale.com> Signed-off-by: Alexander Graf <agraf@suse.de>
git-mirror · May 30, 2012 · d35b107 · d35b107
1 parent 21bd000
commit d35b107
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diff --git 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
@@ -122,7 +122,7 @@ 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
-Original file line number
+Diff line change
@@ Expand Up / @@ -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).
@@ Expand Down @@