linux-kernel - Re: [PATCH] x86/kvm: Disable KVM_ASYNC_PF_SEND

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Message-ID: <CALCETrVHMO14Vcg9-pmuhN+MmXCuKnfR5Zipc6sqkqVHQGAQRg@mail.gmail.com>
Date:   Fri, 6 Mar 2020 18:21:07 -0800
From:   Andy Lutomirski <luto@...nel.org>
To:     Andy Lutomirski <luto@...nel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>, X86 ML <x86@...nel.org>,
        kvm list <kvm@...r.kernel.org>,
        Paolo Bonzini <pbonzini@...hat.com>,
        stable <stable@...r.kernel.org>
Subject: Re: [PATCH] x86/kvm: Disable KVM_ASYNC_PF_SEND_ALWAYS

On Fri, Mar 6, 2020 at 6:16 PM Andy Lutomirski <luto@...nel.org> wrote:
>
> The ABI is broken and we cannot support it properly.  Turn it off.
>
> If this causes a meaningful performance regression for someone, KVM
> can introduce an improved ABI that is supportable.

Ugh, disregard this patch.  I flubbed the comment, and I'll send v2 shortly.