OSs are now capable of treating SP and CRYPTO memory as true capabilities
and therefore these should be exposed. This requires usage of a separate
ACCESS_MASK to hide all page-access permission capabilities.
Change in masking and hiding of SP and CRYPTO was introduced in
3bd5c994c879f78e8e3d5346dc3b627f199291aa
Signed-off-by: Malgorzata Kukiello <jacek.kukie...@intel.com>
Cc: Jian J Wang <jian.j.w...@intel.com>
Cc: Hao A Wu <hao.a...@intel.com>
Cc: Dandan Bi <dandan...@intel.com>
Cc: Liming Gao <gaolim...@byosoft.com.cn>
Cc: Oleksiy Yakovlev <oleks...@ami.com>
Cc: Ard Biesheuvel (ARM address) <ard.biesheu...@arm.com>
---
MdeModulePkg/Core/Dxe/Mem/Page.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/MdeModulePkg/Core/Dxe/Mem/Page.c b/MdeModulePkg/Core/Dxe/Mem/Page.c
index 2c2c9cd6c3..731bf08bc9 100644
--- a/MdeModulePkg/Core/Dxe/Mem/Page.c
+++ b/MdeModulePkg/Core/Dxe/Mem/Page.c
@@ -1924,16 +1924,16 @@ CoreGetMemoryMap (
// set attributes and change memory paging attribute accordingly.
// But current EFI_MEMORY_DESCRIPTOR.Attribute is assigned by
// value from Capabilities in GCD memory map. This might cause
- // boot problems. Clearing all paging related capabilities can
- // workaround it. Following code is supposed to be removed once
- // the usage of EFI_MEMORY_DESCRIPTOR.Attribute is clarified in
- // UEFI spec and adopted by both EDK-II Core and all supported
- // OSs.
+ // boot problems. Clearing all page-access permission related
+ // capabilities can workaround it. Following code is supposed to
+ // be removed once the usage of EFI_MEMORY_DESCRIPTOR.Attribute
+ // is clarified in UEFI spec and adopted by both EDK-II Core and
+ // all supported OSs.
//
MemoryMapEnd = MemoryMap;
MemoryMap = MemoryMapStart;
while (MemoryMap < MemoryMapEnd) {
- MemoryMap->Attribute &= ~(UINT64)EFI_MEMORY_ATTRIBUTE_MASK;
+ MemoryMap->Attribute &= ~(UINT64)EFI_MEMORY_ACCESS_MASK;
MemoryMap = NEXT_MEMORY_DESCRIPTOR (MemoryMap, Size);
}
MergeMemoryMap (MemoryMapStart, &BufferSize, Size);
--
2.18.0.windows.1
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