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| author | Stefani Seibold <stefani@seibold.net> | 2014-03-17 23:22:09 +0100 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2014-03-18 12:52:37 -0700 |
| commit | 7a59ed415f5b57469e22e41fc4188d5399e0b194 (patch) | |
| tree | fb57bae076853fbcbd44af62fb07d77d3c44125b /arch/x86/include/asm | |
| parent | b4b541a610c4db8643b36030ee5012203ca65778 (diff) | |
| download | op-kernel-dev-7a59ed415f5b57469e22e41fc4188d5399e0b194.zip op-kernel-dev-7a59ed415f5b57469e22e41fc4188d5399e0b194.tar.gz | |
x86, vdso: Add 32 bit VDSO time support for 32 bit kernel
This patch add the time support for 32 bit a VDSO to a 32 bit kernel.
For 32 bit programs running on a 32 bit kernel, the same mechanism is
used as for 64 bit programs running on a 64 bit kernel.
Reviewed-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Stefani Seibold <stefani@seibold.net>
Link: http://lkml.kernel.org/r/1395094933-14252-10-git-send-email-stefani@seibold.net
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86/include/asm')
| -rw-r--r-- | arch/x86/include/asm/vdso.h | 5 | ||||
| -rw-r--r-- | arch/x86/include/asm/vdso32.h | 11 |
2 files changed, 16 insertions, 0 deletions
diff --git a/arch/x86/include/asm/vdso.h b/arch/x86/include/asm/vdso.h index f8605e6..bde4359 100644 --- a/arch/x86/include/asm/vdso.h +++ b/arch/x86/include/asm/vdso.h @@ -2,6 +2,11 @@ #define _ASM_X86_VDSO_H #if defined CONFIG_X86_32 || defined CONFIG_COMPAT + +#include <asm/vdso32.h> + +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. diff --git a/arch/x86/include/asm/vdso32.h b/arch/x86/include/asm/vdso32.h new file mode 100644 index 0000000..7efb701 --- /dev/null +++ b/arch/x86/include/asm/vdso32.h @@ -0,0 +1,11 @@ +#ifndef _ASM_X86_VDSO32_H +#define _ASM_X86_VDSO32_H + +#define VDSO_BASE_PAGE 0 +#define VDSO_VVAR_PAGE 1 +#define VDSO_HPET_PAGE 2 +#define VDSO_PAGES 3 +#define VDSO_PREV_PAGES 2 +#define VDSO_OFFSET(x) ((x) * PAGE_SIZE) + +#endif |
