[PATCH 19/28] x86: vdso: Delete vvar.h
Thomas Weißschuh
thomas.weissschuh at linutronix.de
Thu Oct 10 00:01:21 PDT 2024
All users have been removed.
Signed-off-by: Thomas Weißschuh <thomas.weissschuh at linutronix.de>
---
arch/x86/include/asm/vvar.h | 66 ---------------------------------------------
1 file changed, 66 deletions(-)
diff --git a/arch/x86/include/asm/vvar.h b/arch/x86/include/asm/vvar.h
deleted file mode 100644
index d95cf92296ef6acf66089a734465eda4cba9154c..0000000000000000000000000000000000000000
--- a/arch/x86/include/asm/vvar.h
+++ /dev/null
@@ -1,66 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * vvar.h: Shared vDSO/kernel variable declarations
- * Copyright (c) 2011 Andy Lutomirski
- *
- * 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.)
- */
-
-#ifndef _ASM_X86_VVAR_H
-#define _ASM_X86_VVAR_H
-
-#ifdef EMIT_VVAR
-/*
- * EMIT_VVAR() is used by the kernel linker script to put vvars in the
- * right place. Also, it's used by kernel code to import offsets values.
- */
-#define DECLARE_VVAR(offset, type, name) \
- EMIT_VVAR(name, offset)
-#define DECLARE_VVAR_SINGLE(offset, type, name) \
- EMIT_VVAR(name, offset)
-
-#else
-
-extern char __vvar_page;
-
-#define DECLARE_VVAR(offset, type, name) \
- extern type vvar_ ## name[CS_BASES] \
- __attribute__((visibility("hidden"))); \
- extern type timens_ ## name[CS_BASES] \
- __attribute__((visibility("hidden"))); \
-
-#define DECLARE_VVAR_SINGLE(offset, type, name) \
- extern type vvar_ ## name \
- __attribute__((visibility("hidden"))); \
-
-#define VVAR(name) (vvar_ ## name)
-#define TIMENS(name) (timens_ ## name)
-
-#define DEFINE_VVAR(type, name) \
- type name[CS_BASES] \
- __attribute__((section(".vvar_" #name), aligned(16))) __visible
-
-#define DEFINE_VVAR_SINGLE(type, name) \
- type name \
- __attribute__((section(".vvar_" #name), aligned(16))) __visible
-
-#endif
-
-/* DECLARE_VVAR(offset, type, name) */
-
-DECLARE_VVAR(0, struct vdso_data, _vdso_data)
-
-#undef DECLARE_VVAR
-#undef DECLARE_VVAR_SINGLE
-
-#endif
--
2.47.0
More information about the linux-riscv
mailing list