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OvmfPkg/VmgExitLib: Set the SW exit fields when performing VMGEXIT 

BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3008

All fields that are set in the GHCB should have their associated bit in
the GHCB ValidBitmap field set. Add support to set the bits for the
software exit information fields when performing a VMGEXIT (SwExitCode,
SwExitInfo1, SwExitInfo2).

Fixes: 61bacc0fa1
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Ard Biesheuvel <ard.biesheuvel@arm.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Brijesh Singh <brijesh.singh@amd.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Message-Id: <986e157c13bf33e529b1d16ab1b52e99a74a734f.1604685192.git.thomas.lendacky@amd.com>
This commit is contained in:
Tom Lendacky 2020-11-06 11:53:06 -06:00 committed by mergify[bot]
parent a13967f2a3
commit 6133e72c00
1 changed files with 4 additions and 0 deletions
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4
OvmfPkg/Library/VmgExitLib/VmgExitLib.c
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@ -110,6 +110,10 @@ VmgExit (
Ghcb->SaveArea.SwExitInfo1 = ExitInfo1;
Ghcb->SaveArea.SwExitInfo2 = ExitInfo2;
VmgSetOffsetValid (Ghcb, GhcbSwExitCode);
VmgSetOffsetValid (Ghcb, GhcbSwExitInfo1);
VmgSetOffsetValid (Ghcb, GhcbSwExitInfo2);
//
// Guest memory is used for the guest-hypervisor communication, so fence
// the invocation of the VMGEXIT instruction to ensure GHCB accesses are