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MdePkg/UefiSpec: separate page access bitmask from SP and CRYPTO caps 

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

Operating systems are capable of treating SP and CRYPTO memory capabilities
and not as attributes. This means that these capabilites cannot be hidden
from OSs. For this reason, the SP and CRYPTO bits should be separated from
the bitmask that we use for hiding the page-access attributes.
Common mask for ATTRIBUTES was introduced in
3bd5c994c8

Signed-off-by: Malgorzata Kukiello <jacek.kukiello@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Zhiguang Liu <zhiguang.liu@intel.com>
Cc: Oleksiy Yakovlev <oleksiyy@ami.com>
Cc: Ard Biesheuvel (ARM address) <ard.biesheuvel@arm.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
This commit is contained in:
Malgorzata Kukiello 2020-09-24 18:21:32 +08:00 committed by mergify[bot]
parent 244be783ae
commit 61915c4144
1 changed files with 2 additions and 1 deletions
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3
MdePkg/Include/Uefi/UefiSpec.h
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@ -113,7 +113,8 @@ typedef enum {
// Attributes bitmasks, grouped by type
//
#define EFI_CACHE_ATTRIBUTE_MASK (EFI_MEMORY_UC | EFI_MEMORY_WC | EFI_MEMORY_WT | EFI_MEMORY_WB | EFI_MEMORY_UCE | EFI_MEMORY_WP)
#define EFI_MEMORY_ATTRIBUTE_MASK (EFI_MEMORY_RP | EFI_MEMORY_XP | EFI_MEMORY_RO | EFI_MEMORY_SP | EFI_MEMORY_CPU_CRYPTO)
#define EFI_MEMORY_ACCESS_MASK (EFI_MEMORY_RP | EFI_MEMORY_XP | EFI_MEMORY_RO)
#define EFI_MEMORY_ATTRIBUTE_MASK (EFI_MEMORY_ACCESS_MASK | EFI_MEMORY_SP | EFI_MEMORY_CPU_CRYPTO)
///
/// Memory descriptor version number.