Messages in this thread | | | From | Ashish Kalra <> | Subject | Re: [PATCH v2 1/2] KVM: SVM: Move asid to vcpu_svm | Date | Sun, 29 Nov 2020 09:41:09 +0000 |
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From: Ashish Kalra <ashish.kalra@amd.com>
This patch breaks SEV guests.
The patch stores current ASID in struct vcpu_svm and only moves it to VMCB in svm_vcpu_run(), but by doing so, the ASID allocated for SEV guests and setup in vmcb->control.asid by pre_sev_run() gets over-written by this ASID stored in struct vcpu_svm and hence, VMRUN fails as SEV guest is bound/activated on a different ASID then the one overwritten in vmcb->control.asid at VMRUN.
For example, asid#1 was activated for SEV guest and then vmcb->control.asid is overwritten with asid#0 (svm->asid) as part of this patch in svm_vcpu_run() and hence VMRUN fails.
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