1 /* arch/sparc64/mm/tlb.c
3 * Copyright (C) 2004 David S. Miller <davem@redhat.com>
6 #include <linux/kernel.h>
7 #include <linux/init.h>
8 #include <linux/percpu.h>
10 #include <linux/swap.h>
11 #include <linux/preempt.h>
13 #include <asm/pgtable.h>
14 #include <asm/pgalloc.h>
15 #include <asm/tlbflush.h>
16 #include <asm/cacheflush.h>
17 #include <asm/mmu_context.h>
20 /* Heavily inspired by the ppc64 code. */
22 DEFINE_PER_CPU(struct mmu_gather, mmu_gathers) = { 0, };
24 void flush_tlb_pending(void)
26 struct mmu_gather *mp;
30 mp = &__get_cpu_var(mmu_gathers);
34 if (CTX_VALID(mp->mm->context)) {
36 smp_flush_tlb_pending(mp->mm, mp->tlb_nr,
39 __flush_tlb_pending(CTX_HWBITS(mp->mm->context),
40 mp->tlb_nr, &mp->vaddrs[0]);
49 void tlb_batch_add(struct mm_struct *mm, unsigned long vaddr, pte_t *ptep, pte_t orig)
51 struct mmu_gather *mp = &__get_cpu_var(mmu_gathers);
58 if (tlb_type != hypervisor &&
60 unsigned long paddr, pfn = pte_pfn(orig);
61 struct address_space *mapping;
67 page = pfn_to_page(pfn);
68 if (PageReserved(page))
71 /* A real file page? */
72 mapping = page_mapping(page);
76 paddr = (unsigned long) page_address(page);
77 if ((paddr ^ vaddr) & (1 << 13))
78 flush_dcache_page_all(mm, page);
88 if (unlikely(nr != 0 && mm != mp->mm)) {
96 mp->vaddrs[nr] = vaddr;
98 if (nr >= TLB_BATCH_NR)