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From: Vivek Goyal <vgoyal@in.ibm.com>
To: linux kernel mailing list <linux-kernel@vger.kernel.org>
Cc: Reloc Kernel List <fastboot@lists.osdl.org>,
	ebiederm@xmission.com, akpm@osdl.org, ak@suse.de, hpa@zytor.com,
	magnus.damm@gmail.com, lwang@redhat.com, dzickus@redhat.com,
	maneesh@in.ibm.com
Subject: [PATCH 3/11] i386: Force data segment to be 4K aligned
Date: Mon, 23 Oct 2006 15:30:57 -0400	[thread overview]
Message-ID: <20061023193057.GD13263@in.ibm.com> (raw)
In-Reply-To: <20061023192456.GA13263@in.ibm.com>



o Currently there is no specific alignment restriction in linker script
  and in some cases it can be placed non 4K aligned addresses. This fails
  kexec which checks that segment to be loaded is page aligned.

o I guess, it does not harm data segment to be 4K aligned.

Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com>
---

 arch/i386/kernel/vmlinux.lds.S |    1 +
 1 file changed, 1 insertion(+)

diff -puN arch/i386/kernel/vmlinux.lds.S~i386-force-data-section-to-4K-aligned arch/i386/kernel/vmlinux.lds.S
--- linux-2.6.19-rc2-git7-reloc/arch/i386/kernel/vmlinux.lds.S~i386-force-data-section-to-4K-aligned	2006-10-23 13:15:21.000000000 -0400
+++ linux-2.6.19-rc2-git7-reloc-root/arch/i386/kernel/vmlinux.lds.S	2006-10-23 15:08:55.000000000 -0400
@@ -52,6 +52,7 @@ SECTIONS
   }
 
   /* writeable */
+  . = ALIGN(4096);
   .data : AT(ADDR(.data) - LOAD_OFFSET) {	/* Data */
 	*(.data)
 	CONSTRUCTORS
_

  parent reply	other threads:[~2006-10-23 19:48 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-10-23 19:24 [RFC][PATCH 0/11] i386: Relocatable BzImage (V3) Vivek Goyal
2006-10-23 19:26 ` [PATCH 1/11] i386: Distinguish absolute symbols Vivek Goyal
2006-10-23 19:29 ` [PATCH 2/11] i386: Remove unnecessary ALIGN() in vmlinux.lds.S Vivek Goyal
2006-10-23 19:30 ` Vivek Goyal [this message]
2006-10-23 19:32 ` [PATCH 4/11] i386: define __pa_symbol() Vivek Goyal
2006-10-23 19:33 ` [PATCH 5/11] i386: Reserve kernel memory starting from _text Vivek Goyal
2006-10-23 19:36 ` [PATCH 6/11] i386: CONFIG_PHYSICAL_START cleanup Vivek Goyal
2006-10-23 19:37 ` [PATCH 7/11] i386: Kallsyms generate relocatable symbols Vivek Goyal
2006-11-06 14:48   ` Haavard Skinnemoen
2006-11-06 16:03     ` Vivek Goyal
2006-11-06 16:13       ` Haavard Skinnemoen
2006-11-06 16:34     ` H. Peter Anvin
2006-10-23 19:39 ` [PATCH 8/11] i386: Relocatable kernel support Vivek Goyal
2006-10-23 19:40 ` [PATCH 9/11] i386: Warn upon absolute relocations being present Vivek Goyal
2006-10-23 19:42 ` [PATCH 10/11] i386: Implement CONFIG_PHYSICAL_ALIGN Vivek Goyal
2006-10-23 19:44 ` [PATCH 11/11] i386: Extend bzImage protocol for relocatable protected mode kernel Vivek Goyal
2006-10-24 13:44 ` [RFC][PATCH 0/11] i386: Relocatable BzImage (V3) Andi Kleen

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