diff options
| -rw-r--r-- | OvmfPkg/PlatformPei/AmdSev.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/OvmfPkg/PlatformPei/AmdSev.c b/OvmfPkg/PlatformPei/AmdSev.c index a2b38c5912..4a515a4847 100644 --- a/OvmfPkg/PlatformPei/AmdSev.c +++ b/OvmfPkg/PlatformPei/AmdSev.c @@ -51,9 +51,11 @@ AmdSevEsInitialize ( //
// Allocate GHCB and per-CPU variable pages.
+ // Since the pages must survive across the UEFI to OS transition
+ // make them reserved.
//
GhcbPageCount = mMaxCpuCount * 2;
- GhcbBase = AllocatePages (GhcbPageCount);
+ GhcbBase = AllocateReservedPages (GhcbPageCount);
ASSERT (GhcbBase != NULL);
GhcbBasePa = (PHYSICAL_ADDRESS)(UINTN) GhcbBase;
|