[edk2-devel] [PATCH v2 0/2] UEFI memmap workaround for hiding page-access caps from OSes hides SP and CRYPTO caps too

[Malgorzata Kukiello]

REF:https://bugzilla.tianocore.org/show_bug.cgi?id=2982

The workaround in the UEFI memmap construction, near the end of the
function CoreGetMemoryMap() [MdeModulePkg/Core/Dxe/Mem/Page.c] should
not clear the SP and CRYPTO bits, because OSes do (apparently) correctly
interpret SP and CRYPTO as capabilities, and not as currently set
attributes (upon which the OSes should set their page tables). For this
reason, the SP and CRYPTO bits should be separated from the bitmask that
we use for hiding the page-access attributes, in the workaround

Signed-off-by: Malgorzata Kukiello <jacek.kukiello at intel.com>
Cc: Michael D Kinney <michael.d.kinney at intel.com>
Cc: Jian J Wang <jian.j.wang at intel.com>
Cc: Hao A Wu <hao.a.wu at intel.com>
Cc: Dandan Bi <dandan.bi at intel.com>
Cc: Liming Gao <gaoliming at byosoft.com.cn>
Cc: Zhiguang Liu <zhiguang.liu at intel.com>
Cc: Oleksiy Yakovlev <oleksiyy at ami.com>
Cc: Ard Biesheuvel (ARM address) <ard.biesheuvel at arm.com>

 MdeModulePkg/Core/Dxe/Mem/Page.c | 12 ++++++------
 MdePkg/Include/Uefi/UefiSpec.h   |  3 ++-
 2 files changed, 8 insertions(+), 7 deletions(-)
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