linux-kernel - Re: [PATCH v6 1/4] KVM: x86: Clarify the kvm_run.emulation

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Message-ID: <cunfst5ff37.fsf@oracle.com>
Date:   Wed, 13 Oct 2021 10:29:00 +0100
From:   David Edmondson <david.edmondson@...cle.com>
To:     Sean Christopherson <seanjc@...gle.com>
Cc:     David Edmondson <david.edmondson@...cle.com>,
        linux-kernel@...r.kernel.org, "H. Peter Anvin" <hpa@...or.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>, x86@...nel.org,
        Joerg Roedel <joro@...tes.org>, Ingo Molnar <mingo@...hat.com>,
        kvm@...r.kernel.org, Paolo Bonzini <pbonzini@...hat.com>,
        Jim Mattson <jmattson@...gle.com>,
        Borislav Petkov <bp@...en8.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        Wanpeng Li <wanpengli@...cent.com>,
        David Matlack <dmatlack@...gle.com>
Subject: Re: [PATCH v6 1/4] KVM: x86: Clarify the kvm_run.emulation_failure
 structure layout

On Tuesday, 2021-10-12 at 23:45:43 GMT, Sean Christopherson wrote:

> On Mon, Sep 20, 2021, David Edmondson wrote:
>> Until more flags for kvm_run.emulation_failure flags are defined, it
>> is undetermined whether new payload elements corresponding to those
>> flags will be additive or alternative. As a hint to userspace that an
>> alternative is possible, wrap the current payload elements in a union.
>> 
>> Suggested-by: Sean Christopherson <seanjc@...gle.com>
>> Signed-off-by: David Edmondson <david.edmondson@...cle.com>
>> ---
>
> To complete the set... :-)
>
> Reviewed-by: Sean Christopherson <seanjc@...gle.com>

Thanks!