diff options
| author | Andy Lutomirski <luto@amacapital.net> | 2014-03-13 16:01:26 -0700 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2014-03-13 16:20:09 -0700 |
| commit | b0b49f2673f011cad7deeabf7a683b388c351278 (patch) | |
| tree | 2a3bfe9ccc51d4b2072381fe4ebd4f3630a38444 /arch/x86/include/asm/vdso.h | |
| parent | fa389e220254c69ffae0d403eac4146171062d08 (diff) | |
| download | linux-b0b49f2673f011cad7deeabf7a683b388c351278.tar.bz2 | |
x86, vdso: Remove compat vdso support
The compat vDSO is a complicated hack that's needed to maintain
compatibility with a small range of glibc versions.
This removes it and replaces it with a much simpler hack: a config
option to disable the 32-bit vDSO by default.
This also changes the default value of CONFIG_COMPAT_VDSO to n --
users configuring kernels from scratch almost certainly want that
choice.
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Link: http://lkml.kernel.org/r/4bb4690899106eb11430b1186d5cc66ca9d1660c.1394751608.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 | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/arch/x86/include/asm/vdso.h b/arch/x86/include/asm/vdso.h index fddb53d63915..5594e84d65d9 100644 --- a/arch/x86/include/asm/vdso.h +++ b/arch/x86/include/asm/vdso.h @@ -2,8 +2,6 @@ #define _ASM_X86_VDSO_H #if defined CONFIG_X86_32 || defined CONFIG_COMPAT -extern const char VDSO32_PRELINK[]; - /* * Given a pointer to the vDSO image, find the pointer to VDSO32_name * as that symbol is defined in the vDSO sources or linker script. @@ -11,8 +9,7 @@ extern const char VDSO32_PRELINK[]; #define VDSO32_SYMBOL(base, name) \ ({ \ extern const char VDSO32_##name[]; \ - (void __user *)(VDSO32_##name - VDSO32_PRELINK + \ - (unsigned long)(base)); \ + (void __user *)(VDSO32_##name + (unsigned long)(base)); \ }) #endif |