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Set the BlockIo.Media.IoAlign to 0 because the BlockIo produced by Partition driver consumes DiskIo for read/write operation which doesn't have IO alignment requirement. 

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11493 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
niruiyu 2011-04-01 03:07:38 +00:00
parent 7052047f04
commit 67f802edba
1 changed files with 7 additions and 2 deletions
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9
MdeModulePkg/Universal/Disk/PartitionDxe/Partition.c
View File

@ -4,7 +4,7 @@
of the raw block devices media. Currently "El Torito CD-ROM", Legacy
MBR, and GPT partition schemes are supported.
Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@ -648,6 +648,11 @@ PartitionInstallChildHandle (
Private->BlockIo.Media = &Private->Media;
CopyMem (Private->BlockIo.Media, ParentBlockIo->Media, sizeof (EFI_BLOCK_IO_MEDIA));
Private->Media.LogicalPartition = TRUE;
//
// Logical BlockIo instance doesn't have IoAlign restriction because it implements block io operation based on DiskIo
//
Private->Media.IoAlign = 0;
Private->Media.LastBlock = DivU64x32 (
MultU64x32 (
End - Start + 1,
@ -656,7 +661,7 @@ PartitionInstallChildHandle (
BlockSize
) - 1;
Private->Media.BlockSize = (UINT32) BlockSize;
Private->Media.BlockSize = (UINT32) BlockSize;
//
// Per UEFI Spec, LowestAlignedLba and LogicalBlocksPerPhysicalBlock must be 0