Please ignore this patch as this is having 1/2. This is only one patch. Will send after removing 1/2 Thanks -Bharat > -----Original Message----- > From: Bhushan Bharat-R65777 > Sent: Tuesday, May 15, 2012 1:05 PM > To: kvm-ppc@xxxxxxxxxxxxxxx; agraf@xxxxxxx > Cc: Bhushan Bharat-R65777; Bhushan Bharat-R65777 > Subject: [PATCH 1/2] KVM: PPC: Not optimizing MSR_CE and MSR_DE with paravirt. > > From: Bhushan Bharat-R65777 <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> > --- > 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 -- To unsubscribe from this list: send the line "unsubscribe kvm-ppc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
