1#ifndef _ASM_X86_VSYSCALL_H
2#define _ASM_X86_VSYSCALL_H
3
4#include <linux/seqlock.h>
5#include <uapi/asm/vsyscall.h>
6
7#ifdef CONFIG_X86_VSYSCALL_EMULATION
8extern void map_vsyscall(void);
9
10/*
11 * Called on instruction fetch fault in vsyscall page.
12 * Returns true if handled.
13 */
14extern bool emulate_vsyscall(struct pt_regs *regs, unsigned long address);
15#else
16static inline void map_vsyscall(void) {}
17static inline bool emulate_vsyscall(struct pt_regs *regs, unsigned long address)
18{
19	return false;
20}
21#endif
22
23#endif /* _ASM_X86_VSYSCALL_H */
24