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Date:   Fri, 12 Jun 2020 11:25:49 +0200
From:   Joerg Roedel <>
To:     Tom Lendacky <>
Cc:     Sean Christopherson <>,,, Andy Lutomirski <>,
        Dave Hansen <>,
        Peter Zijlstra <>,
        Thomas Hellstrom <>,
        Jiri Slaby <>,
        Dan Williams <>,
        Juergen Gross <>,
        Kees Cook <>,
        David Rientjes <>,
        Cfir Cohen <>,
        Erdem Aktas <>,
        Masami Hiramatsu <>,
        Mike Stunes <>,
        Joerg Roedel <>,,,
Subject: Re: [PATCH v3 59/75] x86/sev-es: Handle MONITOR/MONITORX Events

On Thu, Jun 11, 2020 at 02:33:12PM -0500, Tom Lendacky wrote:
> I don't think there is any guarantee that MONITOR/MWAIT would work within a
> guest (I'd have to dig some more on that to get a definitive answer, but
> probably not necessary to do). As you say, if KVM emulates it as a NOP,
> there's no sense in exposing the GPA - make it a NOP in the handler. I just
> need to poke some other hypervisor vendors and hear what they have to say.

Okay, makes sense. I made monitor/mwait nops in the patch-set.



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