On 06/05/20 15:27, Tom Lendacky wrote: > BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=2198 > > Under SEV-ES, a MSR_PROT intercept generates a #VC exception. VMGEXIT must > be used to allow the hypervisor to handle this intercept. > > Add support to construct the required GHCB values to support an MSR_PROT > NAE event. Parse the instruction that generated the #VC exception to > determine whether it is RDMSR or WRMSR, setting the required register > register values in the GHCB and creating the proper SW_EXIT_INFO1 value in > the GHCB. > > Cc: Jordan Justen <jordan.l.jus...@intel.com> > Cc: Laszlo Ersek <ler...@redhat.com> > Cc: Ard Biesheuvel <ard.biesheu...@arm.com> > Acked-by: Laszlo Ersek <ler...@redhat.com> > Signed-off-by: Tom Lendacky <thomas.lenda...@amd.com> > --- > OvmfPkg/Library/VmgExitLib/VmgExitVcHandler.c | 65 ++++++++++++++++++++ > 1 file changed, 65 insertions(+)
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