[edk2-stable202411] MdeModulePkg/DxeIplPeim: Fix pagetable protection region in 5 leve paging #6430
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…aging REF:https://bugzilla.tianocore.org/show_bug.cgi?id=4873 Currently the function does not cover the 5 level paging case. it will casued pagetable protection region set incorrectly. This patch do the enhancemant and with the patch protection region has been set correctly. Signed-off-by: Ning Feng <[email protected]> Cc: Ray Ni <[email protected]>
REF:https://bugzilla.tianocore.org/show_bug.cgi?id=4873 Currently the function does not cover the 5 level paging case. it will casued pagetable protection region set incorrectly. This patch do the enhancemant and with the patch protection region has been set correctly. Signed-off-by: Ning Feng <[email protected]> Cc: Ray Ni <[email protected]>
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@niruiyu Is this for edk2-stable202411? Please update title if that is the request and add justification. |
The patch fixes a critical bug when 5-level paging is enabled in the 64-bit PEI phase. The DxeIpl that runs at the end of PEI and the UplEntry that runs at the beginning of Payload both do not handle 5-l paging properly. What title should be used for the stable-tag required changes? @NingFengGit can help to change accordingly. |
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The title should start with [edk2-stable202411]. I will add that. |
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Approved for edk2-stable202411 |
MedModulePkg/DxeIplPeim: Fix pagetable protection region in 5 leve paging
REF:https://bugzilla.tianocore.org/show_bug.cgi?id=4873
Currently the function does not cover the 5 level paging case. it will caused pagetable protection region to be set incorrectly. This patch do the enhancement and with the patch protection region has been set correctly.
CC: Ray Ni [email protected]
##Description
Currently the function does not cover the 5 level paging case. it will casued pagetable protection region set incorrectly. This patch do the enhancemant and with the patch protection region has been set correctly.
##How This Was Tested
we test on real platform with below condition:
5level pagetable +UPL, pagetable region been protected correctly.
4level pagetable+UPL, pagetable region been protected correctly.
5level pagetable +nonUPL pagetable region been protected correctly.
4level pagetable+nonUPL, pagetable region been protected correctly.