linux-kernel - [PATCH 1/3 -v4] kexec/i386: remove PAGE_SIZE alignment from relocate

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Message-Id: <1225417682.24095.136.camel@yhuang-dev.sh.intel.com>
Date:	Fri, 31 Oct 2008 09:48:02 +0800
From:	Huang Ying <ying.huang@...el.com>
To:	Ingo Molnar <mingo@...e.hu>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Vivek Goyal <vgoyal@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Simon Horman <horms@...ge.net.au>,
	Ian Campbell <Ian.Campbell@...rix.com>,
	Magnus Damm <magnus.damm@...il.com>
Cc:	linux-kernel@...r.kernel.org, kexec@...ts.infradead.org
Subject: [PATCH 1/3 -v4] kexec/i386: remove PAGE_SIZE alignment from
	relocate_kernel

This patch removes PAGE_SIZE alignment from relocate_kernel(). Before
kexec jump patches are merged, control page is mapped to
relocate_kernel in kexec page tables, so relocate_kernel must be
PAGE_SIZE aligned. Now, control page is mapped to identity mapped
address, so relocate_kernel need not to be PAGE_SIZE aligned any
more. This can reduce a few KB from kernel text segement.

Signed-off-by: Huang Ying <ying.huang@...el.com>

---
 arch/x86/kernel/relocate_kernel_32.S |    1 -
 1 file changed, 1 deletion(-)

--- a/arch/x86/kernel/relocate_kernel_32.S
+++ b/arch/x86/kernel/relocate_kernel_32.S
@@ -39,7 +39,6 @@
 #define CP_PA_BACKUP_PAGES_MAP	DATA(0x1c)
 
 	.text
-	.align PAGE_SIZE
 	.globl relocate_kernel
 relocate_kernel:
 	/* Save the CPU context, used for jumping back */


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