tyler.durden/audk
1
0
Fork 0
mirror of https://github.com/acidanthera/audk.git synced 2025-09-23 17:57:45 +02:00
Code Issues Packages Projects Releases Wiki Activity

MdePkg: Update MemoryAttributesTable to v2.10

Browse Source 
UEFI v2.10 introduces a new flag to the memory attributes table to
inform the OS whether or not runtime services code regions were emitted
by the compiler with guard instructions for forward edge control flow
integrity enforcement.

So update our definition accordingly.

Link: https://uefi.org/specs/UEFI/2.10/04_EFI_System_Table.html#efi-memory-attributes-table
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>
Acked-by: Michael Kubacki <michael.kubacki@microsoft.com>
Reviewed-by: Leif Lindholm <quic_llindhol@quicinc.com>
Reviewed-by: Oliver Smith-Denny <osd@smith-denny.com>
This commit is contained in:
Ard Biesheuvel 2023-02-02 19:03:33 +01:00 committed by Mikhail Krichanov
parent 21c840c123
commit 8300ac621d
2 changed files with 7 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
MdeModulePkg/Core/Dxe/Misc/MemoryAttributesTable.c
View File

@ -182,7 +182,7 @@ InstallMemoryAttributesTable (
MemoryAttributesTable->Version = EFI_MEMORY_ATTRIBUTES_TABLE_VERSION;
MemoryAttributesTable->NumberOfEntries = RuntimeEntryCount;
MemoryAttributesTable->DescriptorSize = (UINT32)DescriptorSize;
MemoryAttributesTable->Reserved = 0;
MemoryAttributesTable->Flags = 0;
DEBUG ((DEBUG_VERBOSE, "MemoryAttributesTable:\n"));
DEBUG ((DEBUG_VERBOSE, " Version - 0x%08x\n", MemoryAttributesTable->Version));
DEBUG ((DEBUG_VERBOSE, " NumberOfEntries - 0x%08x\n", MemoryAttributesTable->NumberOfEntries));

8
MdePkg/Include/Guid/MemoryAttributesTable.h
View File

@ -17,11 +17,15 @@ typedef struct {
UINT32 Version;
UINT32 NumberOfEntries;
UINT32 DescriptorSize;
UINT32 Reserved;
UINT32 Flags;
// EFI_MEMORY_DESCRIPTOR Entry[1];
} EFI_MEMORY_ATTRIBUTES_TABLE;
#define EFI_MEMORY_ATTRIBUTES_TABLE_VERSION 0x00000001
#define EFI_MEMORY_ATTRIBUTES_TABLE_VERSION 0x00000002
#define EFI_MEMORY_ATTRIBUTES_FLAGS_RT_FORWARD_CONTROL_FLOW_GUARD 0x1
// BIT0 implies that Runtime code includes the forward control flow guard
// instruction, such as X86 CET-IBT or ARM BTI.
extern EFI_GUID gEfiMemoryAttributesTableGuid;