raspi/linux
1
0
Fork 1
mirror of https://github.com/raspberrypi/linux.git synced 2026-01-04 18:27:36 +00:00
Code Issues Projects Releases Wiki Activity

x86/vdso: Delete vvar.h

Browse Source 
All users have been removed.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/20241010-vdso-generic-base-v1-19-b64f0842d512@linutronix.de
This commit is contained in:
Thomas Weißschuh
2024-10-10 09:01:21 +02:00
committed by Thomas Gleixner
parent 7d4acbae2a
commit 05a6b8c190
1 changed files with 0 additions and 66 deletions
Download Patch File Download Diff File Expand all files Collapse all files

66
arch/x86/include/asm/vvar.h
View File

@@ -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