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| author | Ard Biesheuvel <ardb@kernel.org> | 2023-02-02 19:03:34 +0100 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2023-04-07 13:18:38 +0000 |
| commit | 6405cd03048c1850d5047bf66fefa04189a05c94 (patch) | |
| tree | cb562feafc3f96ddf0c0a939e3aa4df3acd5c2a2 /MdeModulePkg/Core/Dxe/DxeMain.h | |
| parent | d6457b3090fea2e26f94e8419f77455945bc4c41 (diff) | |
| download | edk2-6405cd03048c1850d5047bf66fefa04189a05c94.zip edk2-6405cd03048c1850d5047bf66fefa04189a05c94.tar.gz edk2-6405cd03048c1850d5047bf66fefa04189a05c94.tar.bz2 | |
MdeModulePkg: Enable forward edge CFI in mem attributes table
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4405
The memory attributes table has been extended with a flag that indicates
whether or not the OS is permitted to map the EFI runtime code regions
with strict enforcement for IBT/BTI landing pad instructions.
Given that the PE/COFF spec now defines a DllCharacteristicsEx flag that
indicates whether or not a loaded image is compatible with this, we can
wire this up to the flag in the memory attributes table, and set it if
all loaded runtime image are compatible with it.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Leif Lindholm <quic_llindhol@quicinc.com>
Reviewed-by: Oliver Smith-Denny <osde@linux.microsoft.com>
Reviewed-by: Michael Kubacki <michael.kubacki@microsoft.com>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
Diffstat (limited to 'MdeModulePkg/Core/Dxe/DxeMain.h')
| -rw-r--r-- | MdeModulePkg/Core/Dxe/DxeMain.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/MdeModulePkg/Core/Dxe/DxeMain.h b/MdeModulePkg/Core/Dxe/DxeMain.h index 815a6b4..43daa03 100644 --- a/MdeModulePkg/Core/Dxe/DxeMain.h +++ b/MdeModulePkg/Core/Dxe/DxeMain.h @@ -280,6 +280,8 @@ extern EFI_MEMORY_TYPE_INFORMATION gMemoryTypeInformation[EfiMaxMemoryType + 1] extern BOOLEAN gDispatcherRunning;
extern EFI_RUNTIME_ARCH_PROTOCOL gRuntimeTemplate;
+extern BOOLEAN gMemoryAttributesTableForwardCfi;
+
extern EFI_LOAD_FIXED_ADDRESS_CONFIGURATION_TABLE gLoadModuleAtFixAddressConfigurationTable;
extern BOOLEAN gLoadFixedAddressCodeMemoryReady;
//
|