1 // SPDX-License-Identifier: GPL-2.0
5 #include <linux/sched.h>
7 #include <asm/mmu_context.h>
9 static inline void local_flush_tlb_all_asid(unsigned long asid)
11 __asm__ __volatile__ ("sfence.vma x0, %0"
17 static inline void local_flush_tlb_page_asid(unsigned long addr,
20 __asm__ __volatile__ ("sfence.vma %0, %1"
22 : "r" (addr), "r" (asid)
26 void flush_tlb_all(void)
28 sbi_remote_sfence_vma(NULL, 0, -1);
31 static void __sbi_tlb_flush_range(struct mm_struct *mm, unsigned long start,
32 unsigned long size, unsigned long stride)
34 struct cpumask *cmask = mm_cpumask(mm);
38 if (cpumask_empty(cmask))
42 /* check if the tlbflush needs to be sent to other CPUs */
43 broadcast = cpumask_any_but(cmask, cpuid) < nr_cpu_ids;
44 if (static_branch_unlikely(&use_asid_allocator)) {
45 unsigned long asid = atomic_long_read(&mm->context.id);
48 sbi_remote_sfence_vma_asid(cmask, start, size, asid);
49 } else if (size <= stride) {
50 local_flush_tlb_page_asid(start, asid);
52 local_flush_tlb_all_asid(asid);
56 sbi_remote_sfence_vma(cmask, start, size);
57 } else if (size <= stride) {
58 local_flush_tlb_page(start);
60 local_flush_tlb_all();
67 void flush_tlb_mm(struct mm_struct *mm)
69 __sbi_tlb_flush_range(mm, 0, -1, PAGE_SIZE);
72 void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr)
74 __sbi_tlb_flush_range(vma->vm_mm, addr, PAGE_SIZE, PAGE_SIZE);
77 void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
80 __sbi_tlb_flush_range(vma->vm_mm, start, end - start, PAGE_SIZE);
82 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
83 void flush_pmd_tlb_range(struct vm_area_struct *vma, unsigned long start,
86 __sbi_tlb_flush_range(vma->vm_mm, start, end - start, PMD_SIZE);