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([2001:b07:6468:f312:5e2c:eb9a:a8b6:fd3e]) by smtp.gmail.com with ESMTPSA id w25sm580072edi.22.2021.09.15.15.33.24 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 15 Sep 2021 15:33:25 -0700 (PDT) Subject: Re: [PATCH] KVM: SEV: Disable KVM_CAP_VM_COPY_ENC_CONTEXT_FROM for SEV-ES To: Peter Gonda Cc: Sean Christopherson , kvm list , Marc Orr , Nathan Tempelman , Brijesh Singh , linux-kernel@vger.kernel.org References: <20210914171551.3223715-1-pgonda@google.com> <8d58d4cb-bc0b-30a9-6218-323c9ffd1037@redhat.com> From: Paolo Bonzini Message-ID: <9feed4e4-937e-2f11-bb56-0da5959c7dbd@redhat.com> Date: Thu, 16 Sep 2021 00:33:23 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 15/09/21 18:10, Peter Gonda wrote: > svm_vm_copy_asid_from() { > > asid = to_kvm_svm(source_kvm)->sev_info.asid; > + handle = to_kvm_svm(source_kvm)->sev_info.handle; > + fd = to_kvm_svm(source_kvm)->sev_info.fd; > + es_active = to_kvm_svm(source_kvm)->sev_info.es_active; > > ... > > /* Set enc_context_owner and copy its encryption context over */ > mirror_sev = &to_kvm_svm(kvm)->sev_info; > mirror_sev->enc_context_owner = source_kvm; > mirror_sev->asid = asid; > mirror_sev->active = true; > + mirror_sev->handle = handle; > + mirror_sev->fd = fd; > + mirror_sev->es_active = es_active; > > Paolo would you prefer a patch to enable ES mirroring or continue with > this patch to disable it for now? If it's possible to enable it, it would be better. The above would be a reasonable patch for 5.15-rc. Paolo