Hi Linus.
Davem asked me to look at the sparc64 linker script.
It used a hardcoded alignment value of 8192 where the correct
size is PAGE_SIZE (which may be 8192).
I have made both a minimal fix (see below) and
a version where the linker script becomes as readable as linker scripts can be.
==== Fix that includes cleanup of vmlinux.lds for sparc64
The fix touches asm-generic/vmlinux.lds.h but will not
impact other architectures.
The patches can be pulled from:
git pull git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fix.git
Patches has been sent to peer review at lkml + sparclinux.
David asked me to mark them "Signed-off-by" but
my understanding are that Signed-off-by: document the path of a patch
so they are marked "Acked-by:".
Here is shortlog + diffstat.
Sam Ravnborg (5):
sparc64: ident vmlinux.lds.S
asm-generic: add RO_DATA which take alignment parameter
sparc64: use PAGE_SIZE in vmlinux.lds
asm-generic: add INITRAMFS to vmlinux.lds.h
sparc64: use INITRAMFS in vmlinux.lds.h
arch/sparc64/kernel/vmlinux.lds.S | 241 +++++++++++++++++++++----------------
include/asm-generic/vmlinux.lds.h | 22 +++-
2 files changed, 159 insertions(+), 104 deletions(-)
==== The minimal fix
The minimal fix would be to just replace use of 8192 with PAGE_SIZE.
This is indeed a much smaller patch.
If you prefer the smaller patch considering the -rc progress I
have pushed that out in the branch 'minimal'.
In this case please pull from the branch minimal:
git pull git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fix.git
minimal
diffstat and diff for the minimal fix below.
Sam
arch/sparc64/kernel/vmlinux.lds.S | 9 +++++----
1 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/arch/sparc64/kernel/vmlinux.lds.S
b/arch/sparc64/kernel/vmlinux.lds.S
index fb648de..7fdabed 100644
--- a/arch/sparc64/kernel/vmlinux.lds.S
+++ b/arch/sparc64/kernel/vmlinux.lds.S
@@ -1,5 +1,6 @@
/* ld script to make UltraLinux kernel */
+#include <asm/page.h>
#include <asm-generic/vmlinux.lds.h>
OUTPUT_FORMAT("elf64-sparc", "elf64-sparc", "elf64-sparc")
@@ -44,7 +45,7 @@ SECTIONS
__ex_table : { *(__ex_table) }
__stop___ex_table = .;
- . = ALIGN(8192);
+ . = ALIGN(PAGE_SIZE);
__init_begin = .;
.init.text : {
_sinittext = .;
@@ -83,17 +84,17 @@ SECTIONS
__sun4v_2insn_patch_end = .;
#ifdef CONFIG_BLK_DEV_INITRD
- . = ALIGN(8192);
+ . = ALIGN(PAGE_SIZE);
__initramfs_start = .;
.init.ramfs : { *(.init.ramfs) }
__initramfs_end = .;
#endif
- . = ALIGN(8192);
+ . = ALIGN(PAGE_SIZE);
__per_cpu_start = .;
.data.percpu : { *(.data.percpu) }
__per_cpu_end = .;
- . = ALIGN(8192);
+ . = ALIGN(PAGE_SIZE);
__init_end = .;
__bss_start = .;
.sbss : { *(.sbss) *(.scommon) }
-
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