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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_VDSO_H
#define _ASM_X86_VDSO_H

#include <asm/page_types.h>
#include <linux/linkage.h>
#include <linux/init.h>

#ifndef __ASSEMBLER__

#include <linux/mm_types.h>

struct vdso_image {
	void *data;
	unsigned long size;   /* Always a multiple of PAGE_SIZE */

	unsigned long alt, alt_len;

	long sym_vvar_start;  /* Negative offset to the vvar area */

	long sym_vvar_page;
	long RH_KABI_RENAME(sym_hpet_page, sym_timens_page);
	long sym_pvclock_page;
	long sym_hvclock_page;
	long sym_VDSO32_NOTE_MASK;
	long sym___kernel_sigreturn;
	long sym___kernel_rt_sigreturn;
	long sym___kernel_vsyscall;
	long sym_int80_landing_pad;

	RH_KABI_EXTEND(unsigned long extable_base)
	RH_KABI_EXTEND(unsigned long extable_len)
	RH_KABI_EXTEND(const void *extable)
};

#ifdef CONFIG_X86_64
extern const struct vdso_image vdso_image_64;
#endif

#ifdef CONFIG_X86_X32
extern const struct vdso_image vdso_image_x32;
#endif

#if defined CONFIG_X86_32 || defined CONFIG_COMPAT
extern const struct vdso_image vdso_image_32;
#endif

extern void __init init_vdso_image(const struct vdso_image *image);

extern int map_vdso_once(const struct vdso_image *image, unsigned long addr);

extern bool fixup_vdso_exception(struct pt_regs *regs, int trapnr,
				 unsigned long error_code,
				 unsigned long fault_addr);
#endif /* __ASSEMBLER__ */

#endif /* _ASM_X86_VDSO_H */