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: /proc/self/root/usr/lib/modules/5.15.0-1082-aws/build/arch/x86/include/asm/ [ drwxr-xr-x ]
name : vsyscall.h /* 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> #include <asm/page_types.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 /* * The (legacy) vsyscall page is the long page in the kernel portion * of the address space that has user-accessible permissions. */ static inline bool is_vsyscall_vaddr(unsigned long vaddr) { return unlikely((vaddr & PAGE_MASK) == VSYSCALL_ADDR); } #endif /* _ASM_X86_VSYSCALL_H */