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-rw-r--r--MdeModulePkg/MdeModulePkg.dec5
1 files changed, 5 insertions, 0 deletions
diff --git a/MdeModulePkg/MdeModulePkg.dec b/MdeModulePkg/MdeModulePkg.dec
index a557466cd0..9084af7b84 100644
--- a/MdeModulePkg/MdeModulePkg.dec
+++ b/MdeModulePkg/MdeModulePkg.dec
@@ -882,6 +882,11 @@
## This PCD specifies whether full PCI enumeration is disabled.
gEfiMdeModulePkgTokenSpaceGuid.PcdPciDisableBusEnumeration|FALSE|BOOLEAN|0x10000048
+ ## Disk I/O - Number of Data Buffer block
+ # Define the size in block of the pre-allocated buffer. It provide better
+ # performance for large Disk I/O requests
+ gEfiMdeModulePkgTokenSpaceGuid.PcdDiskIoDataBufferBlockNum|64|UINT32|0x30001039
+
[PcdsPatchableInModule]
## Specify memory size with page number for PEI code when
# the feature of Loading Module at Fixed Address is enabled