linux-kernel - Re: [PATCH v5 08/34] KVM: SVM: Prevent debugging under SEV-ES

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Message-ID: <da080e02-7921-1b67-2b3b-a480d38cfcb5@redhat.com>
Date:   Mon, 14 Dec 2020 16:41:58 +0100
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Tom Lendacky <thomas.lendacky@....com>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, x86@...nel.org
Cc:     Jim Mattson <jmattson@...gle.com>, Joerg Roedel <joro@...tes.org>,
        Sean Christopherson <seanjc@...gle.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Borislav Petkov <bp@...en8.de>, Ingo Molnar <mingo@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Brijesh Singh <brijesh.singh@....com>
Subject: Re: [PATCH v5 08/34] KVM: SVM: Prevent debugging under SEV-ES

On 10/12/20 18:09, Tom Lendacky wrote:
> Additionally, an SEV-ES guest must only and always intercept DR7 reads and
> writes. Update set_dr_intercepts() and clr_dr_intercepts() to account for
> this.

I cannot see it, where is this documented?

Paolo