linux-kernel - Re: [PATCH] x86: kvm: hyper-v: deal with buggy TLB flush requests from WS2012

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Message-ID: <ea77b990-2799-cad4-580e-a55b895cb412@redhat.com>
Date:   Thu, 18 Apr 2019 18:58:01 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Sean Christopherson <sean.j.christopherson@...el.com>
Cc:     Vitaly Kuznetsov <vkuznets@...hat.com>, kvm@...r.kernel.org,
        Radim Krčmář <rkrcmar@...hat.com>,
        Roman Kagan <rkagan@...tuozzo.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86: kvm: hyper-v: deal with buggy TLB flush requests
 from WS2012

On 18/04/19 18:56, Sean Christopherson wrote:
>   For simplicity, flush all CPUs if the guest neglected to set processor_mask.

We don't know if it neglected to set processor_mask or the flag...

Paolo