cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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vsyscall.h (703B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef _ASM_X86_VSYSCALL_H
      3#define _ASM_X86_VSYSCALL_H
      4
      5#include <linux/seqlock.h>
      6#include <uapi/asm/vsyscall.h>
      7
      8#ifdef CONFIG_X86_VSYSCALL_EMULATION
      9extern void map_vsyscall(void);
     10extern void set_vsyscall_pgtable_user_bits(pgd_t *root);
     11
     12/*
     13 * Called on instruction fetch fault in vsyscall page.
     14 * Returns true if handled.
     15 */
     16extern bool emulate_vsyscall(unsigned long error_code,
     17			     struct pt_regs *regs, unsigned long address);
     18#else
     19static inline void map_vsyscall(void) {}
     20static inline bool emulate_vsyscall(unsigned long error_code,
     21				    struct pt_regs *regs, unsigned long address)
     22{
     23	return false;
     24}
     25#endif
     26
     27#endif /* _ASM_X86_VSYSCALL_H */