From 67f802edba152a4baec8ed5d40f21ee7299a439a Mon Sep 17 00:00:00 2001 From: niruiyu Date: Fri, 1 Apr 2011 03:07:38 +0000 Subject: [PATCH] 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 --- MdeModulePkg/Universal/Disk/PartitionDxe/Partition.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/MdeModulePkg/Universal/Disk/PartitionDxe/Partition.c b/MdeModulePkg/Universal/Disk/PartitionDxe/Partition.c index 1b0c3b36eb..0a5d3d28f0 100644 --- a/MdeModulePkg/Universal/Disk/PartitionDxe/Partition.c +++ b/MdeModulePkg/Universal/Disk/PartitionDxe/Partition.c @@ -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.
+Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.
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 -- 2.39.2