linux-kernel - Re: [PATCH 1/8] KVM: x86: avoid loading a vCPU after .vm

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Message-ID: <27670a35-c67e-726f-f03f-9cf2eae83523@redhat.com>
Date:   Wed, 30 Mar 2022 14:07:10 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Sean Christopherson <seanjc@...gle.com>,
        Maxim Levitsky <mlevitsk@...hat.com>
Cc:     kvm@...r.kernel.org, Jim Mattson <jmattson@...gle.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Borislav Petkov <bp@...en8.de>, Joerg Roedel <joro@...tes.org>,
        Ingo Molnar <mingo@...hat.com>,
        Suravee Suthikulpanit <suravee.suthikulpanit@....com>,
        x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        linux-kernel@...r.kernel.org,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>, stable@...r.kernel.org
Subject: Re: [PATCH 1/8] KVM: x86: avoid loading a vCPU after .vm_destroy was
 called

On 3/30/22 02:27, Sean Christopherson wrote:
> Rather than split kvm_free_vcpus(), can we instead move the call to svm_vm_destroy()
> by adding a second hook, .vm_teardown(), which is needed for TDX?  I.e. keep VMX
> where it is by using vm_teardown, but effectively move SVM?
> 
> https://lore.kernel.org/all/1fa2d0db387a99352d44247728c5b8ae5f5cab4d.1637799475.git.isaku.yamahata@intel.com

I'd rather do that only for the TDX patches.

Paolo