1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_X86_VDSO_H 3 #define _ASM_X86_VDSO_H 4 5 #include <asm/page_types.h> 6 #include <linux/linkage.h> 7 #include <linux/init.h> 8 9 #ifndef __ASSEMBLER__ 10 11 #include <linux/mm_types.h> 12 13 struct vdso_image { 14 void *data; 15 unsigned long size; /* Always a multiple of PAGE_SIZE */ 16 17 unsigned long alt, alt_len; 18 19 long sym_vvar_start; /* Negative offset to the vvar area */ 20 21 long sym_vvar_page; 22 long sym_pvclock_page; 23 long sym_hvclock_page; 24 long sym_VDSO32_NOTE_MASK; 25 long sym___kernel_sigreturn; 26 long sym___kernel_rt_sigreturn; 27 long sym___kernel_vsyscall; 28 long sym_int80_landing_pad; 29 }; 30 31 #ifdef CONFIG_X86_64 32 extern const struct vdso_image vdso_image_64; 33 #endif 34 35 #ifdef CONFIG_X86_X32 36 extern const struct vdso_image vdso_image_x32; 37 #endif 38 39 #if defined CONFIG_X86_32 || defined CONFIG_COMPAT 40 extern const struct vdso_image vdso_image_32; 41 #endif 42 43 extern void __init init_vdso_image(const struct vdso_image *image); 44 45 extern int map_vdso_once(const struct vdso_image *image, unsigned long addr); 46 47 #endif /* __ASSEMBLER__ */ 48 49 #endif /* _ASM_X86_VDSO_H */ 50