This area is overwritten after resume / reboot. Make sure the OS steers
clear of it so that we don't destroy OS data after resume.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <ler...@redhat.com>
---
OvmfPkg/PlatformPei/Fv.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/OvmfPkg/PlatformPei/Fv.c b/OvmfPkg/PlatformPei/Fv.c
index f389e27..4f1ad16 100644
--- a/OvmfPkg/PlatformPei/Fv.c
+++ b/OvmfPkg/PlatformPei/Fv.c
@@ -45,12 +45,13 @@ PeiFvInitialization (
BuildFvHob (PcdGet32 (PcdOvmfMemFvBase), PcdGet32 (PcdOvmfMemFvSize));
//
- // Create a memory allocation HOB.
+ // Cover the decompressed main firmware with a memory allocation that
+ // prevents the OS from using it. At S3 resume we overwrite this area.
//
BuildMemoryAllocationHob (
PcdGet32 (PcdOvmfMemFvBase),
PcdGet32 (PcdOvmfMemFvSize),
- EfiBootServicesData
+ EfiACPIMemoryNVS
);
return EFI_SUCCESS;
--
1.8.3.1
------------------------------------------------------------------------------
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