[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 cbd24860fbb79b3c744f78bc117f48e6e513c8fe..c217e18f10812bb6cc2fb72ed97dccdd28fad05d 100644 (file)
--- 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 */