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Linux kernel mirror (for testing)
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linux
1#ifndef _PPC64_TLBFLUSH_H
2#define _PPC64_TLBFLUSH_H
3
4/*
5 * TLB flushing:
6 *
7 * - flush_tlb_mm(mm) flushes the specified mm context TLB's
8 * - flush_tlb_page(vma, vmaddr) flushes one page
9 * - flush_tlb_page_nohash(vma, vmaddr) flushes one page if SW loaded TLB
10 * - flush_tlb_range(vma, start, end) flushes a range of pages
11 * - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
12 * - flush_tlb_pgtables(mm, start, end) flushes a range of page tables
13 */
14
15#include <linux/percpu.h>
16#include <asm/page.h>
17
18#define PPC64_TLB_BATCH_NR 192
19
20struct mm_struct;
21struct ppc64_tlb_batch {
22 unsigned long index;
23 unsigned long context;
24 struct mm_struct *mm;
25 pte_t pte[PPC64_TLB_BATCH_NR];
26 unsigned long addr[PPC64_TLB_BATCH_NR];
27 unsigned long vaddr[PPC64_TLB_BATCH_NR];
28 unsigned int large;
29};
30DECLARE_PER_CPU(struct ppc64_tlb_batch, ppc64_tlb_batch);
31
32extern void __flush_tlb_pending(struct ppc64_tlb_batch *batch);
33
34static inline void flush_tlb_pending(void)
35{
36 struct ppc64_tlb_batch *batch = &get_cpu_var(ppc64_tlb_batch);
37
38 if (batch->index)
39 __flush_tlb_pending(batch);
40 put_cpu_var(ppc64_tlb_batch);
41}
42
43#define flush_tlb_mm(mm) flush_tlb_pending()
44#define flush_tlb_page(vma, addr) flush_tlb_pending()
45#define flush_tlb_page_nohash(vma, addr) do { } while (0)
46#define flush_tlb_range(vma, start, end) \
47 do { (void)(start); flush_tlb_pending(); } while (0)
48#define flush_tlb_kernel_range(start, end) flush_tlb_pending()
49#define flush_tlb_pgtables(mm, start, end) do { } while (0)
50
51extern void flush_hash_page(unsigned long context, unsigned long ea, pte_t pte,
52 int local);
53void flush_hash_range(unsigned long context, unsigned long number, int local);
54
55#endif /* _PPC64_TLBFLUSH_H */