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| 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/fixmap.h | |
| parent | fa389e220254c69ffae0d403eac4146171062d08 (diff) | |
| download | linux-0-day-b0b49f2673f011cad7deeabf7a683b388c351278.tar.gz linux-0-day-b0b49f2673f011cad7deeabf7a683b388c351278.tar.xz | |
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/fixmap.h')
| -rw-r--r-- | arch/x86/include/asm/fixmap.h | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/arch/x86/include/asm/fixmap.h b/arch/x86/include/asm/fixmap.h index 7252cd339175e..2377f5618fb77 100644 --- a/arch/x86/include/asm/fixmap.h +++ b/arch/x86/include/asm/fixmap.h @@ -40,15 +40,8 @@ */ extern unsigned long __FIXADDR_TOP; #define FIXADDR_TOP ((unsigned long)__FIXADDR_TOP) - -#define FIXADDR_USER_START __fix_to_virt(FIX_VDSO) -#define FIXADDR_USER_END __fix_to_virt(FIX_VDSO - 1) #else #define FIXADDR_TOP (VSYSCALL_END-PAGE_SIZE) - -/* Only covers 32bit vsyscalls currently. Need another set for 64bit. */ -#define FIXADDR_USER_START ((unsigned long)VSYSCALL32_VSYSCALL) -#define FIXADDR_USER_END (FIXADDR_USER_START + PAGE_SIZE) #endif @@ -74,7 +67,6 @@ extern unsigned long __FIXADDR_TOP; enum fixed_addresses { #ifdef CONFIG_X86_32 FIX_HOLE, - FIX_VDSO, #else VSYSCALL_LAST_PAGE, VSYSCALL_FIRST_PAGE = VSYSCALL_LAST_PAGE |