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/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2009 Chen Liqin <liqin.chen@sunplusct.com> * Copyright (C) 2012 Regents of the University of California */ #ifndef _ASM_RISCV_TLBFLUSH_H #define _ASM_RISCV_TLBFLUSH_H #include <linux/mm_types.h> #include <asm/smp.h> #include <asm/errata_list.h> #define FLUSH_TLB_MAX_SIZE ((unsigned long)-1) #define FLUSH_TLB_NO_ASID ((unsigned long)-1) #ifdef CONFIG_MMU static inline void local_flush_tlb_all(void) { __asm__ __volatile__ ("sfence.vma" : : : "memory"); } static inline void local_flush_tlb_all_asid(unsigned long asid) { if (asid != FLUSH_TLB_NO_ASID) ALT_SFENCE_VMA_ASID(asid); else local_flush_tlb_all(); } /* Flush one page from local TLB */ static inline void local_flush_tlb_page(unsigned long addr) { ALT_SFENCE_VMA_ADDR(addr); } static inline void local_flush_tlb_page_asid(unsigned long addr, unsigned long asid) { if (asid != FLUSH_TLB_NO_ASID) ALT_SFENCE_VMA_ADDR_ASID(addr, asid); else local_flush_tlb_page(addr); } void flush_tlb_all(void); void flush_tlb_mm(struct mm_struct *mm); void flush_tlb_mm_range(struct mm_struct *mm, unsigned long start, unsigned long end, unsigned int page_size); void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr); void flush_tlb_range(struct vm_area_struct *vma, unsigned long start, unsigned long end); void flush_tlb_kernel_range(unsigned long start, unsigned long end); void local_flush_tlb_kernel_range(unsigned long start, unsigned long end); #ifdef CONFIG_TRANSPARENT_HUGEPAGE #define __HAVE_ARCH_FLUSH_PMD_TLB_RANGE void flush_pmd_tlb_range(struct vm_area_struct *vma, unsigned long start, unsigned long end); #endif bool arch_tlbbatch_should_defer(struct mm_struct *mm); void arch_tlbbatch_add_pending(struct arch_tlbflush_unmap_batch *batch, struct mm_struct *mm, unsigned long uaddr); void arch_flush_tlb_batched_pending(struct mm_struct *mm); void arch_tlbbatch_flush(struct arch_tlbflush_unmap_batch *batch); extern unsigned long tlb_flush_all_threshold; #else /* CONFIG_MMU */ #define local_flush_tlb_all() do { } while (0) #endif /* CONFIG_MMU */ #endif /* _ASM_RISCV_TLBFLUSH_H */