summaryrefslogtreecommitdiff
path: root/arch/x86/include/asm/vvar.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/x86/include/asm/vvar.h')
-rw-r--r--arch/x86/include/asm/vvar.h50
1 files changed, 0 insertions, 50 deletions
diff --git a/arch/x86/include/asm/vvar.h b/arch/x86/include/asm/vvar.h
deleted file mode 100644
index de656ac2af41..000000000000
--- a/arch/x86/include/asm/vvar.h
+++ /dev/null
@@ -1,50 +0,0 @@
-/*
- * vvar.h: Shared vDSO/kernel variable declarations
- * Copyright (c) 2011 Andy Lutomirski
- * Subject to the GNU General Public License, version 2
- *
- * A handful of variables are accessible (read-only) from userspace
- * code in the vsyscall page and the vdso. They are declared here.
- * Some other file must define them with DEFINE_VVAR.
- *
- * In normal kernel code, they are used like any other variable.
- * In user code, they are accessed through the VVAR macro.
- *
- * These variables live in a page of kernel data that has an extra RO
- * mapping for userspace. Each variable needs a unique offset within
- * that page; specify that offset with the DECLARE_VVAR macro. (If
- * you mess up, the linker will catch it.)
- */
-
-/* Base address of vvars. This is not ABI. */
-#define VVAR_ADDRESS (-10*1024*1024 - 4096)
-
-#if defined(__VVAR_KERNEL_LDS)
-
-/* The kernel linker script defines its own magic to put vvars in the
- * right place.
- */
-#define DECLARE_VVAR(offset, type, name) \
- EMIT_VVAR(name, offset)
-
-#else
-
-#define DECLARE_VVAR(offset, type, name) \
- static type const * const vvaraddr_ ## name = \
- (void *)(VVAR_ADDRESS + (offset));
-
-#define DEFINE_VVAR(type, name) \
- type name \
- __attribute__((section(".vvar_" #name), aligned(16)))
-
-#define VVAR(name) (*vvaraddr_ ## name)
-
-#endif
-
-/* DECLARE_VVAR(offset, type, name) */
-
-DECLARE_VVAR(0, volatile unsigned long, jiffies)
-DECLARE_VVAR(16, int, vgetcpu_mode)
-DECLARE_VVAR(128, struct vsyscall_gtod_data, vsyscall_gtod_data)
-
-#undef DECLARE_VVAR