linux-kernel - Re: [PATCH v2] KVM: nVMX: Fix nested bus lock VM exit

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Message-ID: <37eb4ef4-7dd2-1bbb-f250-8a600b91e749@redhat.com>
Date:   Wed, 22 Sep 2021 11:57:01 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Sean Christopherson <seanjc@...gle.com>,
        Chenyi Qiang <chenyi.qiang@...el.com>
Cc:     Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>,
        Xiaoyao Li <xiaoyao.li@...el.com>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] KVM: nVMX: Fix nested bus lock VM exit

On 20/09/21 16:52, Sean Christopherson wrote:
> On Tue, Sep 14, 2021, Chenyi Qiang wrote:
>> Nested bus lock VM exits are not supported yet. If L2 triggers bus lock
>> VM exit, it will be directed to L1 VMM, which would cause unexpected
>> behavior. Therefore, handle L2's bus lock VM exits in L0 directly.
>>
>> Fixes: fe6b6bc802b4 ("KVM: VMX: Enable bus lock VM exit")
> 
> Cc: stable@...r.kernel.org
> 
>> Signed-off-by: Chenyi Qiang <chenyi.qiang@...el.com>
>>
>> ---
> 
> Reviewed-by: Sean Christopherson <seanjc@...gle.com>
> 

Queued, thanks.

Paolo