[PATCH v4 08/11] OvmfPkg/AmdSev/SecretPei: build hob for full page


Dov Murik
 

Round up the size of the SEV launch secret area to a whole page, as
required by BuildMemoryAllocationHob. This will allow the secret
area defined in the MEMFD to take less than a whole 4KB page.

Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Ashish Kalra <ashish.kalra@amd.com>
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Erdem Aktas <erdemaktas@google.com>
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Min Xu <min.m.xu@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=3D3457
Signed-off-by: Dov Murik <dovmurik@linux.ibm.com>
Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com>
Reviewed-by: Brijesh Singh <brijesh.singh@amd.com>
---
OvmfPkg/AmdSev/SecretPei/SecretPei.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/OvmfPkg/AmdSev/SecretPei/SecretPei.c b/OvmfPkg/AmdSev/SecretPe=
i/SecretPei.c
index ad491515dd5d..db94c26b54d1 100644
--- a/OvmfPkg/AmdSev/SecretPei/SecretPei.c
+++ b/OvmfPkg/AmdSev/SecretPei/SecretPei.c
@@ -4,6 +4,7 @@
Copyright (C) 2020 James Bottomley, IBM Corporation.=0D
SPDX-License-Identifier: BSD-2-Clause-Patent=0D
**/=0D
+#include <Base.h>=0D
#include <PiPei.h>=0D
#include <Library/HobLib.h>=0D
#include <Library/PcdLib.h>=0D
@@ -17,7 +18,7 @@ InitializeSecretPei (
{=0D
BuildMemoryAllocationHob (=0D
PcdGet32 (PcdSevLaunchSecretBase),=0D
- PcdGet32 (PcdSevLaunchSecretSize),=0D
+ ALIGN_VALUE (PcdGet32 (PcdSevLaunchSecretSize), EFI_PAGE_SIZE),=0D
EfiBootServicesData=0D
);=0D
=0D
--=20
2.25.1

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