From: Vivek Goyal <vgoyal@in.ibm.com>
Date: Thu, 7 Dec 2006 01:14:03 +0000 (+0100)
Subject: [PATCH] i386: Add comment for align to vmlinux.lds
X-Git-Tag: v2.6.20-rc1~145^2^2~8^2~115
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6ed018845f1172cdc94f8a20ad807df901c6b7eb;p=linux-2.6

[PATCH] i386: Add comment for align to vmlinux.lds

Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
---

diff --git a/arch/i386/kernel/vmlinux.lds.S b/arch/i386/kernel/vmlinux.lds.S
index cbd24860fb..c217e18f10 100644
--- a/arch/i386/kernel/vmlinux.lds.S
+++ b/arch/i386/kernel/vmlinux.lds.S
@@ -121,6 +121,12 @@ SECTIONS
 	*(.smp_altinstr_replacement)
   	__smp_alt_end = .;
   }
+  /* will be freed after init
+   * Following ALIGN() is required to make sure no other data falls on the
+   * same page where __smp_alt_end is pointing as that page might be freed
+   * after boot. Always make sure that ALIGN() directive is present after
+   * the section which contains __smp_alt_end.
+   */
   . = ALIGN(4096);
 
   /* will be freed after init */