diff options
| author | Andy Lutomirski <luto@amacapital.net> | 2014-03-20 23:01:21 +0100 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2014-03-20 23:19:14 +0100 |
| commit | b67e612cef1e5964efc6fa99fb7ad3d31c4db01a (patch) | |
| tree | c037de472a7e20c143dc3ca05e3f9327dc917d09 /arch/x86/include/asm/vdso.h | |
| parent | x86, vdso32: handle 32 bit vDSO larger one page (diff) | |
| download | linux-b67e612cef1e5964efc6fa99fb7ad3d31c4db01a.tar.xz linux-b67e612cef1e5964efc6fa99fb7ad3d31c4db01a.zip | |
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/include/asm/vdso.h')
| -rw-r--r-- | arch/x86/include/asm/vdso.h | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/arch/x86/include/asm/vdso.h b/arch/x86/include/asm/vdso.h index bde435998f3a..0301d78bb910 100644 --- a/arch/x86/include/asm/vdso.h +++ b/arch/x86/include/asm/vdso.h @@ -25,14 +25,6 @@ extern const char VDSO32_PRELINK[]; extern void __user __kernel_sigreturn; extern void __user __kernel_rt_sigreturn; -/* - * These symbols are defined by vdso32.S to mark the bounds - * of the ELF DSO images included therein. - */ -extern const char vdso32_int80_start, vdso32_int80_end; -extern const char vdso32_syscall_start, vdso32_syscall_end; -extern const char vdso32_sysenter_start, vdso32_sysenter_end; - void __init patch_vdso32(void *vdso, size_t len); #endif /* _ASM_X86_VDSO_H */ |