From: Ashish Kalra <ashish.kalra@xxxxxxx> 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.
