From: Stefani Seibold <stefani@seibold.net>
To: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org,
x86@kernel.org, tglx@linutronix.de, mingo@redhat.com,
hpa@zytor.com, ak@linux.intel.com, aarcange@redhat.com,
john.stultz@linaro.org, luto@amacapital.net, xemul@parallels.com,
gorcunov@openvz.org, andriy.shevchenko@linux.intel.com
Cc: Martin.Runge@rohde-schwarz.com, Andreas.Brief@rohde-schwarz.com,
Stefani Seibold <stefani@seibold.net>
Subject: [PATCH v21 07/12] introduce VVAR marco for vdso32
Date: Sun, 2 Mar 2014 10:20:15 +0100 [thread overview]
Message-ID: <1393752020-6740-8-git-send-email-stefani@seibold.net> (raw)
In-Reply-To: <1393752020-6740-1-git-send-email-stefani@seibold.net>
This patch revamp the vvar.h for introduce the VVAR macro for vdso32.
Signed-off-by: Stefani Seibold <stefani@seibold.net>
---
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) */
--
1.9.0
next prev parent reply other threads:[~2014-03-02 9:22 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-02 9:20 [PATCH v21 00/12] Add 32 bit VDSO time function support Stefani Seibold
2014-03-02 9:20 ` [PATCH v21 01/12] Make vsyscall_gtod_data handling x86 generic Stefani Seibold
2014-03-02 9:20 ` [PATCH v21 02/12] Add new func _install_special_mapping() to mmap.c Stefani Seibold
2014-03-02 9:20 ` [PATCH v21 03/12] revamp vclock_gettime.c Stefani Seibold
2014-03-02 9:20 ` [PATCH v21 04/12] vclock_gettime.c __vdso_clock_gettime cleanup Stefani Seibold
2014-03-02 9:20 ` [PATCH v21 05/12] replace VVAR(vsyscall_gtod_data) by gtod macro Stefani Seibold
2014-03-02 9:20 ` [PATCH v21 06/12] cleanup __vdso_gettimeofday Stefani Seibold
2014-03-02 9:20 ` Stefani Seibold [this message]
2014-03-02 9:20 ` [PATCH v21 08/12] Patch alternatives in the 32-bit vDSO Stefani Seibold
2014-03-02 9:20 ` [PATCH v21 09/12] Add 32 bit VDSO time support for 32 bit kernel Stefani Seibold
2014-03-02 9:20 ` [PATCH v21 10/12] Add 32 bit VDSO time support for 64 " Stefani Seibold
2014-03-02 9:20 ` [PATCH v21 12/12] x86: Zero-pad the VVAR page Stefani Seibold
2014-03-02 10:46 ` Ingo Molnar
2014-03-02 10:47 ` [PATCH v21 00/12] Add 32 bit VDSO time function support Ingo Molnar
2014-03-02 16:32 ` Andy Lutomirski
2014-03-02 21:02 ` H. Peter Anvin
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