diff options
| author | Gerd Hoffmann <kraxel@redhat.com> | 2024-04-24 14:00:29 +0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2024-04-25 00:55:20 +0000 |
| commit | 66c24219ade92b85b24f3ce29b988d187a9f6517 (patch) | |
| tree | ab1ef3cf34bd26f25192ac4f7bcf0d5f5a0ac183 | |
| parent | 90b6725562c82ec630d9e0cb19078f4b507db10b (diff) | |
| download | edk2-66c24219ade92b85b24f3ce29b988d187a9f6517.tar.gz | |
OvmfPkg/VirtHstiDxe: do not load driver in confidential guests
The VirtHstiDxe does not work in confidential guests. There also isn't
anything we can reasonably test, neither flash storage nor SMM mode will
be used in that case. So just skip driver load when running in a
confidential guest.
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Fixes: 506740982bba ("OvmfPkg/VirtHstiDxe: add code flash check")
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Tested-by: Srikanth Aithal <sraithal@amd.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
| -rw-r--r-- | OvmfPkg/VirtHstiDxe/VirtHstiDxe.c | 6 | ||||
| -rw-r--r-- | OvmfPkg/VirtHstiDxe/VirtHstiDxe.inf | 1 |
2 files changed, 7 insertions, 0 deletions
diff --git a/OvmfPkg/VirtHstiDxe/VirtHstiDxe.c b/OvmfPkg/VirtHstiDxe/VirtHstiDxe.c index b6e53a1219..efaff0d1f3 100644 --- a/OvmfPkg/VirtHstiDxe/VirtHstiDxe.c +++ b/OvmfPkg/VirtHstiDxe/VirtHstiDxe.c @@ -17,6 +17,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent #include <Library/MemoryAllocationLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiLib.h>
+#include <Library/PcdLib.h>
#include <Library/PlatformInitLib.h>
#include <IndustryStandard/Hsti.h>
@@ -140,6 +141,11 @@ VirtHstiDxeEntrypoint ( EFI_STATUS Status;
EFI_EVENT Event;
+ if (PcdGet64 (PcdConfidentialComputingGuestAttr)) {
+ DEBUG ((DEBUG_INFO, "%a: confidential guest\n", __func__));
+ return EFI_UNSUPPORTED;
+ }
+
DevId = VirtHstiGetHostBridgeDevId ();
switch (DevId) {
case INTEL_82441_DEVICE_ID:
diff --git a/OvmfPkg/VirtHstiDxe/VirtHstiDxe.inf b/OvmfPkg/VirtHstiDxe/VirtHstiDxe.inf index 9514933011..b5c2372887 100644 --- a/OvmfPkg/VirtHstiDxe/VirtHstiDxe.inf +++ b/OvmfPkg/VirtHstiDxe/VirtHstiDxe.inf @@ -49,6 +49,7 @@ gUefiOvmfPkgTokenSpaceGuid.PcdSmmSmramRequire
[Pcd]
+ gEfiMdePkgTokenSpaceGuid.PcdConfidentialComputingGuestAttr
gUefiOvmfPkgTokenSpaceGuid.PcdBfvBase
gUefiOvmfPkgTokenSpaceGuid.PcdOvmfFlashNvStorageVariableBase
|