There're two issues here actually. >From GCD perspective, its SetMemorySpaceAttributes() method doesn't accept page related attributes. That means users cannot use it to change page attributes, and have to turn to CPU arch protocol to do it, which is not be allowed by PI spec.
>From CpuDxe driver perspective, it doesn't update GCD memory attributes from current page table setup during its initialization. So the memory attributes in GCD might not reflect all memory attributes in real world. Cc: Jiewen Yao <[email protected]> Cc: Eric Dong <[email protected]> Cc: Star Zeng <[email protected]> Cc: Laszlo Ersek <[email protected]> Cc: Michael Kinney <[email protected]> Suggested-by: Jiewen Yao <[email protected]> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Jian J Wang <[email protected]> Jian J Wang (2): UefiCpuPkg/CpuDxe: Fix out-of-sync issue in CpuDxe MdeModulePkg/Core: Fix out-of-sync issue in GCD MdeModulePkg/Core/Dxe/Gcd/Gcd.c | 45 ++++++++++-------- UefiCpuPkg/CpuDxe/CpuDxe.c | 5 ++ UefiCpuPkg/CpuDxe/CpuDxe.h | 9 ++++ UefiCpuPkg/CpuDxe/CpuPageTable.c | 99 ++++++++++++++++++++++++++++++++++++++++ 4 files changed, 140 insertions(+), 18 deletions(-) -- 2.14.1.windows.1 _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
