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kernel add
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#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);
/*
* Called on instruction fetch fault in vsyscall page.
* Returns true if handled.
*/
extern bool emulate_vsyscall(struct pt_regs *regs, unsigned long address);
#else
static inline void map_vsyscall(void) {}
static inline bool emulate_vsyscall(struct pt_regs *regs, unsigned long address)
{
return false;
}
#endif
#endif /* _ASM_X86_VSYSCALL_H */
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