From: Mike Frysinger <vapier@gentoo.org>
Date: Tue, 26 Oct 2010 21:22:30 +0000 (-0700)
Subject: vmlinux.lds.h: lower init ramfs alignment to 4
X-Git-Tag: v2.6.37-rc1~105^2~79
X-Git-Url: https://bbs.cooldavid.org/git/?a=commitdiff_plain;h=d88262623fb58853ed60fb110141c435de26e3de;p=net-next-2.6.git

vmlinux.lds.h: lower init ramfs alignment to 4

The new init ramfs format (cpio based) requires an alignment of 4 (per the
documentation and per the source files themselves).  As for compressed
sources, the decompressors can all deal with unaligned buffers.

The cpio source is also found in the __init sections of the kernel, so
once they are read and expanded into a tmpfs, the source is freed.  That
means there is no need to force page alignment here either.

This has been used on Blackfin systems for many releases without issue.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index aaf1105d9d9..2c0fc10956b 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -637,7 +637,7 @@
 
 #ifdef CONFIG_BLK_DEV_INITRD
 #define INIT_RAM_FS							\
-	. = ALIGN(PAGE_SIZE);						\
+	. = ALIGN(4);							\
 	VMLINUX_SYMBOL(__initramfs_start) = .;				\
 	*(.init.ramfs)							\
 	VMLINUX_SYMBOL(__initramfs_end) = .;