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OvmfPkg/VmgExitLib: Set the SwScratch valid bit for IOIO events

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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 bit for the scratch
area field (SwScratch).

Fixes: 0020157a98
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: <f817d034cea37fa78e00e86f61c3445f1208226d.1604685192.git.thomas.lendacky@amd.com>
This commit is contained in:
Tom Lendacky
2020-11-06 11:53:07 -06:00
committed by mergify[bot]
parent 6133e72c00
commit 8d9698ecf8
1 changed files with 1 additions and 0 deletions
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1
OvmfPkg/Library/VmgExitLib/VmgExitVcHandler.c
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@@ -1233,6 +1233,7 @@ IoioExit (
} }
Ghcb->SaveArea.SwScratch = (UINT64) Ghcb->SharedBuffer; Ghcb->SaveArea.SwScratch = (UINT64) Ghcb->SharedBuffer;
VmgSetOffsetValid (Ghcb, GhcbSwScratch);
Status = VmgExit (Ghcb, SVM_EXIT_IOIO_PROT, ExitInfo1, ExitInfo2); Status = VmgExit (Ghcb, SVM_EXIT_IOIO_PROT, ExitInfo1, ExitInfo2);
if (Status != 0) { if (Status != 0) {
return Status; return Status;