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SubjectRe: [PATCH] KVM: nVMX: remove side effects from nested_vmx_exit_reflected
On Wed, Mar 18, 2020 at 11:59:13AM +0100, Paolo Bonzini wrote:
> On 18/03/20 11:52, Vitaly Kuznetsov wrote:
> > The only functional difference seems to be that we're now doing
> > nested_mark_vmcs12_pages_dirty() in vmx->fail case too and this seems
> > superfluous: we failed to enter L2 so 'special' pages should remain
> > intact (right?) but this should be an uncommon case.
> >
> > Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
>
> I'm not entirely sure if the PID could be written before the processor
> decrees a vmfail. It doesn't really hurt anyway as you say though.

I would expect that writing special pages on VM-Fail would be classified
as a CPU bug.

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