From: Hariprasad Nellitheertha <hari@in.ibm.com>
The compile time error that few people have been seeing with the last
couple of -mm releases are due to the changes introduced to
arch/i386/kernel/vmlinux.lds.S to enable kexec based crashdumps. Since
fixing this error needs an upgrade of the binutils package on those
machines, I was looking at a possible workaround within the kernel code
itself.
The problem seems to arise from the fact that the .bss.page_aligned section
(defined in head.S) is included within the .bss section. Older binutils
does not export the proper physical address (LMA) for the .bss section. I
made a patch which moves the .bss.page_aligned section to just before the
.bss section. This compiles fine with both older and newer binutils
packages. I have done some amount of testing with this change and it has
not thrown up any problems.
Signed-off-by: Hariprasad Nellitheertha <hari@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---
25-akpm/arch/i386/kernel/vmlinux.lds.S | 3 ++-
1 files changed, 2 insertions(+), 1 deletion(-)
diff -puN arch/i386/kernel/vmlinux.lds.S~kexec-loading-kernel-from-non-default-offset-fix arch/i386/kernel/vmlinux.lds.S
--- 25/arch/i386/kernel/vmlinux.lds.S~kexec-loading-kernel-from-non-default-offset-fix Mon Nov 1 14:30:14 2004
+++ 25-akpm/arch/i386/kernel/vmlinux.lds.S Mon Nov 1 14:30:14 2004
@@ -117,8 +117,9 @@ SECTIONS
/* freed after init ends here */
__bss_start = .; /* BSS */
+ .bss.page_aligned : AT(ADDR(.bss.page_aligned) - LOAD_OFFSET) {
+ *(.bss.page_aligned) }
.bss : AT(ADDR(.bss) - LOAD_OFFSET) {
- *(.bss.page_aligned)
*(.bss)
}
. = ALIGN(4);
_