On Fri, Jun 22, 2018 at 08:16:04PM +0200, Radim Krčmář wrote:
> 2018-06-22 11:51+0200, Borislav Petkov:
> > From: Borislav Petkov <bp@xxxxxxx>
> >
> > Extend the range of MCA banks which get passed to set/get_msr_mce() to
> > include all the MSRs of the last bank too.
> >
> > Signed-off-by: Borislav Petkov <bp@xxxxxxx>
> > ---
> > arch/x86/kvm/x86.c | 5 +++--
> > 1 file changed, 3 insertions(+), 2 deletions(-)
> >
> > diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
> > index 80452b0f0e8c..a7d344823356 100644
> > --- a/arch/x86/kvm/x86.c
> > +++ b/arch/x86/kvm/x86.c
> > @@ -2466,7 +2466,7 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
> >
> > case MSR_IA32_MCG_CTL:
> > case MSR_IA32_MCG_STATUS:
> > - case MSR_IA32_MC0_CTL ... MSR_IA32_MCx_CTL(KVM_MAX_MCE_BANKS) - 1:
> > + case MSR_IA32_MC0_CTL ... MSR_IA32_MCx_MISC(KVM_MAX_MCE_BANKS) - 1:
>
> It was correct before. We have 32 banks (KVM_MAX_MCE_BANKS), so the
> last useable has index 31 and the "- 1" is going to roll over from first
> MSR of bank 32 to the last MSR of the last bank.
>
> Another way of writing it would be:
>
> case MSR_IA32_MC0_CTL ... MSR_IA32_MCx_MISC(KVM_MAX_MCE_BANKS - 1):
Huh?
This is what I did:
+ case MSR_IA32_MC0_CTL ... MSR_IA32_MCx_MISC(KVM_MAX_MCE_BANKS) - 1:
It needs to be MISC because it is the last MSR in the MCA bank and thus
the highest.
--
Regards/Gruss,
Boris.
Good mailing practices for 400: avoid top-posting and trim the reply.
