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MdeModulePkg/MdeModulePkg.dec: clarify Heap Guard usage

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Cc: Star Zeng <star.zeng@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jian J Wang <jian.j.wang@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
(cherry picked from commit b6ad4675b6)
This commit is contained in:
Jian J Wang
2017-12-29 17:14:07 +08:00
committed by Star Zeng
parent 9bdb89e8ba
commit 4dd49c1907
1 changed files with 12 additions and 0 deletions
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12
MdeModulePkg/MdeModulePkg.dec
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@@ -893,6 +893,12 @@
gEfiMdeModulePkgTokenSpaceGuid.PcdInitValueInTempStack|0x5AA55AA5|UINT32|0x30001051 gEfiMdeModulePkgTokenSpaceGuid.PcdInitValueInTempStack|0x5AA55AA5|UINT32|0x30001051
## Indicates which type allocation need guard page. ## Indicates which type allocation need guard page.
#
# If a bit is set, a head guard page and a tail guard page will be added just
# before and after corresponding type of pages allocated if there's enough
# free pages for all of them. The page allocation for the type related to
# cleared bits keeps the same as ususal.
#
# Below is bit mask for this PCD: (Order is same as UEFI spec)<BR> # Below is bit mask for this PCD: (Order is same as UEFI spec)<BR>
# EfiReservedMemoryType 0x0000000000000001<BR> # EfiReservedMemoryType 0x0000000000000001<BR>
# EfiLoaderCode 0x0000000000000002<BR> # EfiLoaderCode 0x0000000000000002<BR>
@@ -916,6 +922,12 @@
gEfiMdeModulePkgTokenSpaceGuid.PcdHeapGuardPageType|0x0|UINT64|0x30001052 gEfiMdeModulePkgTokenSpaceGuid.PcdHeapGuardPageType|0x0|UINT64|0x30001052
## Indicates which type allocation need guard page. ## Indicates which type allocation need guard page.
#
# If a bit is set, a head guard page and a tail guard page will be added just
# before and after corresponding type of pages which the allocated pool occupies,
# if there's enough free memory for all of them. The pool allocation for the
# type related to cleared bits keeps the same as ususal.
#
# Below is bit mask for this PCD: (Order is same as UEFI spec)<BR> # Below is bit mask for this PCD: (Order is same as UEFI spec)<BR>
# EfiReservedMemoryType 0x0000000000000001<BR> # EfiReservedMemoryType 0x0000000000000001<BR>
# EfiLoaderCode 0x0000000000000002<BR> # EfiLoaderCode 0x0000000000000002<BR>