Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
54 lines
1.2 KiB
C
54 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2012 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_MMU_CONTEXT_H
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#define _ASM_RISCV_MMU_CONTEXT_H
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#include <linux/mm_types.h>
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#include <asm-generic/mm_hooks.h>
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#include <linux/mm.h>
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#include <linux/sched.h>
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void switch_mm(struct mm_struct *prev, struct mm_struct *next,
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struct task_struct *task);
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#define activate_mm activate_mm
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static inline void activate_mm(struct mm_struct *prev,
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struct mm_struct *next)
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{
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#ifdef CONFIG_RISCV_ISA_SUPM
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next->context.pmlen = 0;
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#endif
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switch_mm(prev, next, NULL);
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}
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#define init_new_context init_new_context
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static inline int init_new_context(struct task_struct *tsk,
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struct mm_struct *mm)
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{
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#ifdef CONFIG_MMU
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atomic_long_set(&mm->context.id, 0);
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#endif
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if (IS_ENABLED(CONFIG_RISCV_ISA_SUPM))
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clear_bit(MM_CONTEXT_LOCK_PMLEN, &mm->context.flags);
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return 0;
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}
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DECLARE_STATIC_KEY_FALSE(use_asid_allocator);
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#ifdef CONFIG_RISCV_ISA_SUPM
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#define mm_untag_mask mm_untag_mask
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static inline unsigned long mm_untag_mask(struct mm_struct *mm)
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{
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return -1UL >> mm->context.pmlen;
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}
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#endif
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#include <asm-generic/mmu_context.h>
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#endif /* _ASM_RISCV_MMU_CONTEXT_H */
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