diff options
| author | Andy Lutomirski <luto@amacapital.net> | 2014-03-20 15:01:21 -0700 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2014-03-20 15:19:14 -0700 |
| commit | b67e612cef1e5964efc6fa99fb7ad3d31c4db01a (patch) | |
| tree | c037de472a7e20c143dc3ca05e3f9327dc917d09 /arch/x86/vdso/vdso32.S | |
| parent | 4e40112c4ff6a577dd06d92b2a54cdf06265bf74 (diff) | |
x86: Load the 32-bit vdso in place, just like the 64-bit vdsos
This replaces a decent amount of incomprehensible and buggy code
with much more straightforward code. It also brings the 32-bit vdso
more in line with the 64-bit vdsos, so maybe someday they can share
even more code.
This wastes a small amount of kernel .data and .text space, but it
avoids a couple of allocations on startup, so it should be more or
less a wash memory-wise.
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Cc: Stefani Seibold <stefani@seibold.net>
Link: http://lkml.kernel.org/r/b8093933fad09ce181edb08a61dcd5d2592e9814.1395352498.git.luto@amacapital.net
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86/vdso/vdso32.S')
| -rw-r--r-- | arch/x86/vdso/vdso32.S | 21 |
1 files changed, 4 insertions, 17 deletions
diff --git a/arch/x86/vdso/vdso32.S b/arch/x86/vdso/vdso32.S index 2ce5f82c333b..cfa6adda110b 100644 --- a/arch/x86/vdso/vdso32.S +++ b/arch/x86/vdso/vdso32.S @@ -1,22 +1,9 @@ -#include <linux/init.h> +#include "vdso_image.h" -__INITDATA +DEFINE_VDSO_IMAGE(vdso32_int80, "arch/x86/vdso/vdso32-int80.so") - .globl vdso32_int80_start, vdso32_int80_end -vdso32_int80_start: - .incbin "arch/x86/vdso/vdso32-int80.so" -vdso32_int80_end: - - .globl vdso32_syscall_start, vdso32_syscall_end -vdso32_syscall_start: #ifdef CONFIG_COMPAT - .incbin "arch/x86/vdso/vdso32-syscall.so" +DEFINE_VDSO_IMAGE(vdso32_syscall, "arch/x86/vdso/vdso32-syscall.so") #endif -vdso32_syscall_end: - - .globl vdso32_sysenter_start, vdso32_sysenter_end -vdso32_sysenter_start: - .incbin "arch/x86/vdso/vdso32-sysenter.so" -vdso32_sysenter_end: -__FINIT +DEFINE_VDSO_IMAGE(vdso32_sysenter, "arch/x86/vdso/vdso32-sysenter.so") |