Re: [PATCH] KVM: Documentation: document MCE ioctls

[Luiz Capitulino <lcapitulino@redhat.com>]

On Thu, 9 Mar 2017 13:49:06 +0100
Paolo Bonzini <pbonzini@redhat.com> wrote:

> > +struct kvm_x86_mce {
> > +	__u64 status;
> > +	__u64 addr;
> > +	__u64 misc;
> > +	__u64 mcg_status;
> > +	__u8 bank;
> > +	__u8 pad1[7];
> > +	__u64 pad2[3];
> > +};
> > +
> > +If the MCE being reported is an uncorrected error, KVM will
> > +inject it as a MCE exception into the guest (if an MCE
> > +is still in progress, a triple fault is be injected).  
> 
> If the guest MCG_STATUS register reports that an MCE is in progress, KVM
> causes an KVM_EXIT_SHUTDOWN vmexit.

Oh, that's correct. But it only happens for uncorrected errors.
So, My new paragraph would be:

If the MCE being reported is an uncorrected error, KVM will
inject it as an MCE exception into the guest. If the guest MCG_STATUS
register reports taht an MCE is in progress, KVM causes an
KVM_EXIT_SHUTDOWN vmexit.

Otherwise, if the MCE is an corrected error, KVM will just
store it in the corresponding bank (provided this bank is
not holding a previously reported uncorrected error).