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Commit ef721987 authored by Stefani Seibold's avatar Stefani Seibold Committed by H. Peter Anvin
Browse files

x86, vdso: Introduce VVAR marco for vdso32 



This patch revamps the vvar.h for introduce the VVAR macro for vdso32.

Reviewed-by: default avatarAndy Lutomirski <luto@amacapital.net>
Signed-off-by: default avatarStefani Seibold <stefani@seibold.net>
Link: http://lkml.kernel.org/r/1395094933-14252-8-git-send-email-stefani@seibold.net


Signed-off-by: default avatarH. Peter Anvin <hpa@linux.intel.com>
parent 0df1ea2b

arch/x86/include/asm/vvar.h

+12 −2
Original line number Diff line number Diff line
@@ -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) */