| From | Andy Lutomirski <> | Subject | Re: [PATCH 50/62] x86/sev-es: Handle VMMCALL Events | Date | Tue, 11 Feb 2020 16:14:53 -0800 |
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> On Feb 11, 2020, at 5:53 AM, Joerg Roedel <joro@8bytes.org> wrote: > > From: Tom Lendacky <thomas.lendacky@amd.com> > > Implement a handler for #VC exceptions caused by VMMCALL instructions. > This patch is only a starting point, VMMCALL emulation under SEV-ES > needs further hypervisor-specific changes to provide additional state. >
How about we just don’t do VMMCALL if we’re a SEV-ES guest? Otherwise we add thousands of cycles of extra latency for no good reason.
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