Branch: refs/heads/master
Home: https://github.com/tianocore/edk2
Commit: 7da3dcd45d4feb7e753c6422f491b810c0e6decc
https://github.com/tianocore/edk2/commit/7da3dcd45d4feb7e753c6422f491b810c0e6decc
Author: Michael Kubacki <[email protected]>
Date: 2024-11-11 (Mon, 11 Nov 2024)
Changed paths:
M ArmPlatformPkg/MemoryInitPei/MemoryInitPeiLib.inf
M ArmPlatformPkg/MemoryInitPei/MemoryInitPeim.c
M ArmPlatformPkg/MemoryInitPei/MemoryInitPeim.inf
Log Message:
-----------
ArmPlatformPkg/MemoryInitPei: Remove Non-RT Types from Mem Type Info HOB
Removes the following types from the memory type information HOBs
produced in the MemoryInitPei code:
- `EfiBootServicesCode`
- `EfiBootServicesData`
- `EfiLoaderCode`
- `EfiLoaderData`
Our platform has a memory type information validation routine that
currently expects those types to be excluded as they would not impact
the UEFI memory map since they are not runtime memory types.
This follows the guidance in the whitepaper "A Tour Beyond BIOS
Memory Map and Practices in UEFI BIOS".
https://github.com/tianocore-docs/Docs/raw/master/White_Papers/A_Tour_Beyond_BIOS_Memory_Map_And_Practices_in_UEFI_BIOS_V2.pdf
"NOTE: We recommend a platform only define the ReservedMemory,
ACPINvs, ACPIReclaim, RuntimeCode, RuntimeData in Memory Type
Information table, because OSes only request these regions to be
consistent. There is no need to add BootServicesCode,
BootServicesData, LoaderCode, LoaderData in memory type information
table, because these regions will not be reserved during S4 resume."
Since these memory types are not tracked in memory type information
any longer it also reduces the number of resets that may need to
occur to update memory type buckets that are not needed.
Signed-off-by: Michael Kubacki <[email protected]>
Commit: d1372720a83b83057a034a95ee1316078d05f51b
https://github.com/tianocore/edk2/commit/d1372720a83b83057a034a95ee1316078d05f51b
Author: Michael Kubacki <[email protected]>
Date: 2024-11-11 (Mon, 11 Nov 2024)
Changed paths:
M ArmVirtPkg/MemoryInitPei/MemoryInitPeim.c
M ArmVirtPkg/MemoryInitPei/MemoryInitPeim.inf
Log Message:
-----------
ArmVirtPkg/MemoryInitPei: Remove Non-RT Types from Mem Type Info HOB
Removes the following types from the memory type information HOBs
produced in the MemoryInitPei PEIM:
- `EfiBootServicesCode`
- `EfiBootServicesData`
- `EfiLoaderCode`
- `EfiLoaderData`
Our platform has a memory type information validation routine that
currently expects those types to be excluded as they would not impact
the UEFI memory map since they are not runtime memory types.
This follows the guidance in the whitepaper "A Tour Beyond BIOS
Memory Map and Practices in UEFI BIOS".
https://github.com/tianocore-docs/Docs/raw/master/White_Papers/A_Tour_Beyond_BIOS_Memory_Map_And_Practices_in_UEFI_BIOS_V2.pdf
"NOTE: We recommend a platform only define the ReservedMemory,
ACPINvs, ACPIReclaim, RuntimeCode, RuntimeData in Memory Type
Information table, because OSes only request these regions to be
consistent. There is no need to add BootServicesCode,
BootServicesData, LoaderCode, LoaderData in memory type information
table, because these regions will not be reserved during S4 resume."
Since these memory types are not tracked in memory type information
any longer it also reduces the number of resets that may need to
occur to update memory type buckets that are not needed.
Signed-off-by: Michael Kubacki <[email protected]>
Commit: b904377d0d54a784f9a9348d05088afc80de5c54
https://github.com/tianocore/edk2/commit/b904377d0d54a784f9a9348d05088afc80de5c54
Author: Michael Kubacki <[email protected]>
Date: 2024-11-11 (Mon, 11 Nov 2024)
Changed paths:
M EmbeddedPkg/Library/PrePiHobLib/Hob.c
M EmbeddedPkg/Library/PrePiHobLib/PrePiHobLib.inf
Log Message:
-----------
EmbeddedPkg/PrePiHobLib: Remove Non-RT Types from Mem Type Info HOB
Removes the following types from the memory type information HOB
produced:
- `EfiBootServicesCode`
- `EfiBootServicesData`
- `EfiLoaderCode`
- `EfiLoaderData`
This follows the guidance in the whitepaper "A Tour Beyond BIOS
Memory Map and Practices in UEFI BIOS".
https://github.com/tianocore-docs/Docs/raw/master/White_Papers/A_Tour_Beyond_BIOS_Memory_Map_And_Practices_in_UEFI_BIOS_V2.pdf
"NOTE: We recommend a platform only define the ReservedMemory,
ACPINvs, ACPIReclaim, RuntimeCode, RuntimeData in Memory Type
Information table, because OSes only request these regions to be
consistent. There is no need to add BootServicesCode,
BootServicesData, LoaderCode, LoaderData in memory type information
table, because these regions will not be reserved during S4 resume."
Since these memory types are not tracked in memory type information
any longer it also reduces the number of resets that may need to
occur to update memory type buckets that are not needed.
Signed-off-by: Michael Kubacki <[email protected]>
Compare: https://github.com/tianocore/edk2/compare/d8984e86c7c1...b904377d0d54
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