[2.6 patch] x86_64: unexport ia32_sys_call_table

[2.6 patch] x86_64: unexport ia32_sys_call_table

[Adrian Bunk]

This export doesn't seem to do anything but bloating the kernel by
a few bytes.


Signed-off-by: Adrian Bunk <bunk@stusta.de>

---

 arch/um/include/sysdep-x86_64/syscalls.h |    2 --
 arch/x86_64/ia32/ia32entry.S             |    1 -
 arch/x86_64/ia32/sys_ia32.c              |    2 --
 3 files changed, 5 deletions(-)

--- linux-2.6.16-rc1-mm5-full/arch/um/include/sysdep-x86_64/syscalls.h.old	2006-02-05 18:42:51.000000000 +0100
+++ linux-2.6.16-rc1-mm5-full/arch/um/include/sysdep-x86_64/syscalls.h	2006-02-05 18:42:59.000000000 +0100
@@ -12,8 +12,6 @@
 
 typedef long syscall_handler_t(void);
 
-extern syscall_handler_t *ia32_sys_call_table[];
-
 extern syscall_handler_t *sys_call_table[];
 
 #define EXECUTE_SYSCALL(syscall, regs) \
--- linux-2.6.16-rc1-mm5-full/arch/x86_64/ia32/sys_ia32.c.old	2006-02-05 18:43:18.000000000 +0100
+++ linux-2.6.16-rc1-mm5-full/arch/x86_64/ia32/sys_ia32.c	2006-02-05 18:43:25.000000000 +0100
@@ -1004,5 +1004,3 @@
 
 __initcall(ia32_init);
 
-extern unsigned long ia32_sys_call_table[];
-EXPORT_SYMBOL(ia32_sys_call_table);
--- linux-2.6.16-rc1-mm5-full/arch/x86_64/ia32/ia32entry.S.old	2006-02-05 18:49:28.000000000 +0100
+++ linux-2.6.16-rc1-mm5-full/arch/x86_64/ia32/ia32entry.S	2006-02-05 18:49:48.000000000 +0100
@@ -371,7 +371,6 @@
 
 	.section .rodata,"a"
 	.align 8
-	.globl ia32_sys_call_table
 ia32_sys_call_table:
 	.quad sys_restart_syscall
 	.quad sys_exit

Re: [2.6 patch] x86_64: unexport ia32_sys_call_table

[Christoph Hellwig]

On Sun, Feb 05, 2006 at 07:29:30PM +0100, Adrian Bunk wrote:
> This export doesn't seem to do anything but bloating the kernel by
> a few bytes.

ACK. The native syscall table isn't exported, so the 32bit compat one
shouldn't either - and afaik isn't on any other port.

Re: [2.6 patch] x86_64: unexport ia32_sys_call_table

[Adrian Bunk]

On Sun, Feb 05, 2006 at 06:46:29PM +0000, Christoph Hellwig wrote:
> On Sun, Feb 05, 2006 at 07:29:30PM +0100, Adrian Bunk wrote:
> > This export doesn't seem to do anything but bloating the kernel by
> > a few bytes.
> 
> ACK. The native syscall table isn't exported, so the 32bit compat one
> shouldn't either - and afaik isn't on any other port.

It is also exported on sparc64 because the Solaris binary emulation uses 
it there.

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed