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d2862bb9d9
The generic storage implementation provides the same features as the custom one. However it can be shared between architectures, making maintenance easier. Co-developed-by: Nam Cao <namcao@linutronix.de> Signed-off-by: Nam Cao <namcao@linutronix.de> Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20250204-vdso-store-rng-v3-10-13a4669dfc8c@linutronix.de
38 lines
1.1 KiB
C
38 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Author: Huacai Chen <chenhuacai@loongson.cn>
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* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
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*/
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#ifndef __ASM_VDSO_H
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#define __ASM_VDSO_H
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#include <linux/mm.h>
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#include <linux/mm_types.h>
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#include <vdso/datapage.h>
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#include <asm/barrier.h>
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/*
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* struct loongarch_vdso_info - Details of a VDSO image.
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* @vdso: Pointer to VDSO image (page-aligned).
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* @size: Size of the VDSO image (page-aligned).
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* @off_rt_sigreturn: Offset of the rt_sigreturn() trampoline.
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* @code_mapping: Special mapping structure for vdso code.
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* @code_mapping: Special mapping structure for vdso data.
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*
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* This structure contains details of a VDSO image, including the image data
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* and offsets of certain symbols required by the kernel. It is generated as
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* part of the VDSO build process, aside from the mapping page array, which is
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* populated at runtime.
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*/
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struct loongarch_vdso_info {
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void *vdso;
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unsigned long size;
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unsigned long offset_sigreturn;
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struct vm_special_mapping code_mapping;
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};
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extern struct loongarch_vdso_info vdso_info;
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#endif /* __ASM_VDSO_H */
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