From: Bharat Bhushan <r65777@xxxxxxxxxxxxx> 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@xxxxxxxxxxxxx> Signed-off-by: Alexander Graf <agraf@xxxxxxx> --- 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 62ceb2a..e100ff3 100644 --- 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 -- 1.6.0.2 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
