27 lines
703 B
C
27 lines
703 B
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _ASM_X86_VSYSCALL_H
|
|
#define _ASM_X86_VSYSCALL_H
|
|
|
|
#include <linux/seqlock.h>
|
|
#include <uapi/asm/vsyscall.h>
|
|
|
|
#ifdef CONFIG_X86_VSYSCALL_EMULATION
|
|
extern void map_vsyscall(void);
|
|
extern void set_vsyscall_pgtable_user_bits(pgd_t *root);
|
|
|
|
/*
|
|
* Called on instruction fetch fault in vsyscall page.
|
|
* Returns true if handled.
|
|
*/
|
|
extern bool emulate_vsyscall(unsigned long error_code,
|
|
struct pt_regs *regs, unsigned long address);
|
|
#else
|
|
static inline void map_vsyscall(void) {}
|
|
static inline bool emulate_vsyscall(unsigned long error_code,
|
|
struct pt_regs *regs, unsigned long address)
|
|
{
|
|
return false;
|
|
}
|
|
#endif
|
|
|
|
#endif /* _ASM_X86_VSYSCALL_H */
|