On Fri, Jan 22, 2021, Tom Lendacky wrote: > On 1/22/21 5:50 PM, Sean Christopherson wrote: > > Sync GPRs to the GHCB on VMRUN only if a sync is needed, i.e. if the > > previous exit was a VMGEXIT and the guest is expecting some data back. > > > > The start of sev_es_sync_to_ghcb() checks if the GHCB has been mapped, which > only occurs on VMGEXIT, and exits early if not. And sev_es_sync_from_ghcb() > is only called if the GHCB has been successfully mapped. The only thing in > between is sev_es_validate_vmgexit(), which will terminate the VM on error. > So I don't think this patch is needed. Ah, nice! Yep, this can be dropped. Thanks!
