linux-kernel - [PATCH 01/14] x86, boot: align the .bss section in the decompressor

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Date:	Thu,  7 May 2009 15:26:49 -0700
From:	"H. Peter Anvin" <hpa@...ux.intel.com>
To:	linux-kernel@...r.kernel.org
Cc:	vgoyal@...hat.com, hbabu@...ibm.com, kexec@...ts.infradead.org,
	ying.huang@...el.com, mingo@...e.hu, tglx@...utronix.de,
	ebiederm@...ssion.com, sam@...nborg.org,
	"H. Peter Anvin" <hpa@...or.com>
Subject: [PATCH 01/14] x86, boot: align the .bss section in the decompressor

From: H. Peter Anvin <hpa@...or.com>

Aligning the .bss section makes it trivially faster, and makes using
larger transfers for the clear slightly easier.

[ Impact: trivial performance enhancement, future patch prep ]

Signed-off-by: H. Peter Anvin <hpa@...or.com>
---
 arch/x86/boot/compressed/vmlinux.lds.S |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/arch/x86/boot/compressed/vmlinux.lds.S b/arch/x86/boot/compressed/vmlinux.lds.S
index 0d26c92..27c168d 100644
--- a/arch/x86/boot/compressed/vmlinux.lds.S
+++ b/arch/x86/boot/compressed/vmlinux.lds.S
@@ -42,6 +42,7 @@ SECTIONS
 		*(.data.*)
 		_edata = . ;
 	}
+	. = ALIGN(32);
 	.bss : {
 		_bss = . ;
 		*(.bss)
-- 
1.6.0.6

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