[edk2-devel] [PATCH] OvmfPkg/AmdSev/SecretPei: Mark SEV launch secret area as reserved

[Dov Murik]

Mark the SEV launch secret MEMFD area as reserved, which will allow the
guest OS to use it during the lifetime of the OS, without creating
copies of the sensitive content.

Cc: Ard Biesheuvel <ardb+tianocore at kernel.org>
Cc: Jordan Justen <jordan.l.justen at intel.com>
Cc: Gerd Hoffmann <kraxel at redhat.com>
Cc: Brijesh Singh <brijesh.singh at amd.com>
Cc: Erdem Aktas <erdemaktas at google.com>
Cc: James Bottomley <jejb at linux.ibm.com>
Cc: Jiewen Yao <jiewen.yao at intel.com>
Cc: Min Xu <min.m.xu at intel.com>
Cc: Tom Lendacky <thomas.lendacky at amd.com>
Cc: Tobin Feldman-Fitzthum <tobin at linux.ibm.com>
Signed-off-by: Dov Murik <dovmurik at linux.ibm.com>
---
 OvmfPkg/AmdSev/SecretPei/SecretPei.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/OvmfPkg/AmdSev/SecretPei/SecretPei.c b/OvmfPkg/AmdSev/SecretPei/SecretPei.c
index db94c26b54d1..6bf1a55dea64 100644
--- a/OvmfPkg/AmdSev/SecretPei/SecretPei.c
+++ b/OvmfPkg/AmdSev/SecretPei/SecretPei.c
@@ -19,7 +19,7 @@ InitializeSecretPei (
   BuildMemoryAllocationHob (
     PcdGet32 (PcdSevLaunchSecretBase),
     ALIGN_VALUE (PcdGet32 (PcdSevLaunchSecretSize), EFI_PAGE_SIZE),
-    EfiBootServicesData
+    EfiReservedMemoryType
     );
 
   return EFI_SUCCESS;
-- 
2.25.1



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