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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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46fe55b204
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-v3-9-13a4669dfc8c@linutronix.de
42 lines
965 B
C
42 lines
965 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2012 ARM Limited
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* Copyright (C) 2014 Regents of the University of California
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* Copyright (C) 2017 SiFive
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*/
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#ifndef _ASM_RISCV_VDSO_H
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#define _ASM_RISCV_VDSO_H
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/*
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* All systems with an MMU have a VDSO, but systems without an MMU don't
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* support shared libraries and therefore don't have one.
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*/
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#ifdef CONFIG_MMU
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#define __VDSO_PAGES 4
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#ifndef __ASSEMBLY__
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#include <generated/vdso-offsets.h>
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#define VDSO_SYMBOL(base, name) \
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(void __user *)((unsigned long)(base) + __vdso_##name##_offset)
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#ifdef CONFIG_COMPAT
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#include <generated/compat_vdso-offsets.h>
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#define COMPAT_VDSO_SYMBOL(base, name) \
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(void __user *)((unsigned long)(base) + compat__vdso_##name##_offset)
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extern char compat_vdso_start[], compat_vdso_end[];
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#endif /* CONFIG_COMPAT */
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extern char vdso_start[], vdso_end[];
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#endif /* !__ASSEMBLY__ */
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#endif /* CONFIG_MMU */
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#endif /* _ASM_RISCV_VDSO_H */
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