/* SPDX-License-Identifier: GPL-2.0 */ /* * Author: Huacai Chen <chenhuacai@loongson.cn> * Copyright (C) 2020-2022 Loongson Technology Corporation Limited */ #ifndef __ASM_VDSO_H #define __ASM_VDSO_H #include <linux/mm.h> #include <linux/mm_types.h> #include <vdso/datapage.h> #include <asm/barrier.h> /* * struct loongarch_vdso_info - Details of a VDSO image. * @vdso: Pointer to VDSO image (page-aligned). * @size: Size of the VDSO image (page-aligned). * @off_rt_sigreturn: Offset of the rt_sigreturn() trampoline. * @code_mapping: Special mapping structure for vdso code. * @code_mapping: Special mapping structure for vdso data. * * This structure contains details of a VDSO image, including the image data * and offsets of certain symbols required by the kernel. It is generated as * part of the VDSO build process, aside from the mapping page array, which is * populated at runtime. */ struct loongarch_vdso_info { void *vdso; unsigned long size; unsigned long offset_sigreturn; struct vm_special_mapping code_mapping; struct vm_special_mapping data_mapping; }; extern struct loongarch_vdso_info vdso_info; #endif /* __ASM_VDSO_H */