Re: [PATCH] KVM: SEV: Disable KVM_CAP_VM_COPY_ENC_CONTEXT_FROM for SEV-ES

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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




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