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56 lines
1.5 KiB
56 lines
1.5 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* Copyright (C) 2009 Chen Liqin <[email protected]> |
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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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#ifdef CONFIG_MMU |
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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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#else /* CONFIG_MMU */ |
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#define local_flush_tlb_all() do { } while (0) |
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#define local_flush_tlb_page(addr) do { } while (0) |
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#endif /* CONFIG_MMU */ |
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#if defined(CONFIG_SMP) && defined(CONFIG_MMU) |
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void flush_tlb_all(void); |
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void flush_tlb_mm(struct mm_struct *mm); |
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void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr); |
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void flush_tlb_range(struct vm_area_struct *vma, unsigned long start, |
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unsigned long end); |
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#else /* CONFIG_SMP && CONFIG_MMU */ |
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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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#endif /* !CONFIG_SMP || !CONFIG_MMU */ |
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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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