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53eb26b238
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>
33 lines
945 B
C
33 lines
945 B
C
/** @file
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GUIDs used for UEFI Memory Attributes Table in the UEFI 2.6 specification.
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Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef __UEFI_MEMORY_ATTRIBUTES_TABLE_H__
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#define __UEFI_MEMORY_ATTRIBUTES_TABLE_H__
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#define EFI_MEMORY_ATTRIBUTES_TABLE_GUID {\
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0xdcfa911d, 0x26eb, 0x469f, {0xa2, 0x20, 0x38, 0xb7, 0xdc, 0x46, 0x12, 0x20} \
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}
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typedef struct {
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UINT32 Version;
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UINT32 NumberOfEntries;
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UINT32 DescriptorSize;
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UINT32 Flags;
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// EFI_MEMORY_DESCRIPTOR Entry[1];
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} EFI_MEMORY_ATTRIBUTES_TABLE;
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#define EFI_MEMORY_ATTRIBUTES_TABLE_VERSION 0x00000002
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#define EFI_MEMORY_ATTRIBUTES_FLAGS_RT_FORWARD_CONTROL_FLOW_GUARD 0x1
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// BIT0 implies that Runtime code includes the forward control flow guard
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// instruction, such as X86 CET-IBT or ARM BTI.
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extern EFI_GUID gEfiMemoryAttributesTableGuid;
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#endif
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