Commit-ID: ef721987aef0cc0abba08c88810f2155f76b0b1f
Gitweb: http://git.kernel.org/tip/ef721987aef0cc0abba08c88810f2155f76b0b1f
Author: Stefani Seibold <stefani@xxxxxxxxxxx>
AuthorDate: Mon, 17 Mar 2014 23:22:07 +0100
Committer: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx>
CommitDate: Tue, 18 Mar 2014 12:52:29 -0700
x86, vdso: Introduce VVAR marco for vdso32
This patch revamps the vvar.h for introduce the VVAR macro for vdso32.
Reviewed-by: Andy Lutomirski <luto@xxxxxxxxxxxxxx>
Signed-off-by: Stefani Seibold <stefani@xxxxxxxxxxx>
Link: http://lkml.kernel.org/r/1395094933-14252-8-git-send-email-stefani@xxxxxxxxxxx
Signed-off-by: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx>
---
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) */
--
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