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Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation version 2 this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 97 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141901.025053186@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
72 lines
1.8 KiB
C
72 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2009 Chen Liqin <liqin.chen@sunplusct.com>
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* Copyright (C) 2012 Regents of the University of California
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*/
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#ifndef _ASM_RISCV_TLBFLUSH_H
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#define _ASM_RISCV_TLBFLUSH_H
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#include <linux/mm_types.h>
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#include <asm/smp.h>
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/*
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* Flush entire local TLB. 'sfence.vma' implicitly fences with the instruction
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* cache as well, so a 'fence.i' is not necessary.
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*/
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static inline void local_flush_tlb_all(void)
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{
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__asm__ __volatile__ ("sfence.vma" : : : "memory");
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}
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/* Flush one page from local TLB */
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static inline void local_flush_tlb_page(unsigned long addr)
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{
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__asm__ __volatile__ ("sfence.vma %0" : : "r" (addr) : "memory");
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}
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#ifndef CONFIG_SMP
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#define flush_tlb_all() local_flush_tlb_all()
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#define flush_tlb_page(vma, addr) local_flush_tlb_page(addr)
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static inline void flush_tlb_range(struct vm_area_struct *vma,
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unsigned long start, unsigned long end)
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{
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local_flush_tlb_all();
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}
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#define flush_tlb_mm(mm) flush_tlb_all()
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#else /* CONFIG_SMP */
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#include <asm/sbi.h>
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static inline void remote_sfence_vma(struct cpumask *cmask, unsigned long start,
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unsigned long size)
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{
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struct cpumask hmask;
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cpumask_clear(&hmask);
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riscv_cpuid_to_hartid_mask(cmask, &hmask);
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sbi_remote_sfence_vma(hmask.bits, start, size);
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}
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#define flush_tlb_all() sbi_remote_sfence_vma(NULL, 0, -1)
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#define flush_tlb_page(vma, addr) flush_tlb_range(vma, addr, 0)
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#define flush_tlb_range(vma, start, end) \
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remote_sfence_vma(mm_cpumask((vma)->vm_mm), start, (end) - (start))
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#define flush_tlb_mm(mm) \
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remote_sfence_vma(mm_cpumask(mm), 0, -1)
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#endif /* CONFIG_SMP */
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/* Flush a range of kernel pages */
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static inline void flush_tlb_kernel_range(unsigned long start,
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unsigned long end)
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{
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flush_tlb_all();
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}
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#endif /* _ASM_RISCV_TLBFLUSH_H */
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