Messages in this thread Patch in this message | | | Date | Sun, 16 Feb 2014 16:53:37 -0800 | From | tip-bot for Stefani Seibold <> | Subject | [tip:x86/vdso] x86, vdso: Introduce VVAR marco for vdso32 |
| |
Commit-ID: 995106bc0373be03295aa6e0e380dd33a3a37ea4 Gitweb: http://git.kernel.org/tip/995106bc0373be03295aa6e0e380dd33a3a37ea4 Author: Stefani Seibold <stefani@seibold.net> AuthorDate: Sun, 16 Feb 2014 22:52:45 +0100 Committer: H. Peter Anvin <hpa@linux.intel.com> CommitDate: Sun, 16 Feb 2014 15:07:45 -0800
x86, vdso: Introduce VVAR marco for vdso32
This patch revamps vvar.h for introduce the VVAR macro for vdso32.
Signed-off-by: Stefani Seibold <stefani@seibold.net> Link: http://lkml.kernel.org/r/1392587568-7325-8-git-send-email-stefani@seibold.net Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> --- arch/x86/include/asm/vvar.h | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/arch/x86/include/asm/vvar.h b/arch/x86/include/asm/vvar.h index 0a534ea..52c79ff 100644 --- a/arch/x86/include/asm/vvar.h +++ b/arch/x86/include/asm/vvar.h @@ -26,6 +26,15 @@ #else +#ifdef BUILD_VDSO32 + +#define DECLARE_VVAR(offset, type, name) \ + extern type vvar_ ## name __attribute__((visibility("hidden"))); + +#define VVAR(name) (vvar_ ## name) + +#else + extern char __vvar_page; /* Base address of vvars. This is not ABI. */ @@ -39,12 +48,13 @@ extern char __vvar_page; static type const * const vvaraddr_ ## name = \ (void *)(VVAR_ADDRESS + (offset)); +#define VVAR(name) (*vvaraddr_ ## name) +#endif + #define DEFINE_VVAR(type, name) \ type name \ __attribute__((section(".vvar_" #name), aligned(16))) __visible -#define VVAR(name) (*vvaraddr_ ## name) - #endif /* DECLARE_VVAR(offset, type, name) */
| |