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Commit d35b1075 authored by Bharat Bhushan's avatar Bharat Bhushan Committed by Alexander Graf
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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: default avatarBharat Bhushan <bharat.bhushan@freescale.com>
Signed-off-by: default avatarAlexander Graf <agraf@suse.de>
parent 21bd000a

Documentation/virtual/kvm/ppc-pv.txt

+0 −2
Original line number Diff line number Diff line
@@ -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).

arch/powerpc/kernel/kvm_emul.S

+1 −1
Original line number Diff line number Diff line
@@ -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