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 static DEFINE_PER_CPU(struct tlb_batch, tlb_batch);
24 void flush_tlb_pending(void)
26 struct tlb_batch *tb = &get_cpu_var(tlb_batch);
31 if (CTX_VALID(tb->mm->context)) {
33 smp_flush_tlb_pending(tb->mm, tb->tlb_nr,
36 __flush_tlb_pending(CTX_HWBITS(tb->mm->context),
37 tb->tlb_nr, &tb->vaddrs[0]);
43 put_cpu_var(tlb_batch);
46 void tlb_batch_add(struct mm_struct *mm, unsigned long vaddr,
47 pte_t *ptep, pte_t orig, int fullmm)
49 struct tlb_batch *tb = &get_cpu_var(tlb_batch);
56 if (tlb_type != hypervisor &&
58 unsigned long paddr, pfn = pte_pfn(orig);
59 struct address_space *mapping;
65 page = pfn_to_page(pfn);
66 if (PageReserved(page))
69 /* A real file page? */
70 mapping = page_mapping(page);
74 paddr = (unsigned long) page_address(page);
75 if ((paddr ^ vaddr) & (1 << 13))
76 flush_dcache_page_all(mm, page);
82 put_cpu_var(tlb_batch);
88 if (unlikely(nr != 0 && mm != tb->mm)) {
96 tb->vaddrs[nr] = vaddr;
98 if (nr >= TLB_BATCH_NR)
101 put_cpu_var(tlb_batch);