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);
24 void flush_tlb_pending(void)
26 struct mmu_gather *mp = &get_cpu_var(mmu_gathers);
31 if (CTX_VALID(mp->mm->context)) {
33 smp_flush_tlb_pending(mp->mm, mp->tlb_nr,
36 __flush_tlb_pending(CTX_HWBITS(mp->mm->context),
37 mp->tlb_nr, &mp->vaddrs[0]);
43 put_cpu_var(mmu_gathers);
46 void tlb_batch_add(struct mm_struct *mm, unsigned long vaddr, pte_t *ptep, pte_t orig)
48 struct mmu_gather *mp = &__get_cpu_var(mmu_gathers);
55 if (tlb_type != hypervisor &&
57 unsigned long paddr, pfn = pte_pfn(orig);
58 struct address_space *mapping;
64 page = pfn_to_page(pfn);
65 if (PageReserved(page))
68 /* A real file page? */
69 mapping = page_mapping(page);
73 paddr = (unsigned long) page_address(page);
74 if ((paddr ^ vaddr) & (1 << 13))
75 flush_dcache_page_all(mm, page);
85 if (unlikely(nr != 0 && mm != mp->mm)) {
93 mp->vaddrs[nr] = vaddr;
95 if (nr >= TLB_BATCH_NR)