1 #ifndef _ASM_IA64_TLBFLUSH_H
2 #define _ASM_IA64_TLBFLUSH_H
5 * Copyright (C) 2002 Hewlett-Packard Co
6 * David Mosberger-Tang <davidm@hpl.hp.com>
9 #include <linux/config.h>
13 #include <asm/intrinsics.h>
14 #include <asm/mmu_context.h>
18 * Now for some TLB flushing routines. This is the kind of stuff that
19 * can be very expensive, so try to avoid them whenever possible.
23 * Flush everything (kernel mapping may also have changed due to
26 extern void local_flush_tlb_all (void);
29 extern void smp_flush_tlb_all (void);
30 extern void smp_flush_tlb_mm (struct mm_struct *mm);
31 # define flush_tlb_all() smp_flush_tlb_all()
33 # define flush_tlb_all() local_flush_tlb_all()
37 local_finish_flush_tlb_mm (struct mm_struct *mm)
39 if (mm == current->active_mm)
44 * Flush a specified user mapping. This is called, e.g., as a result of fork() and
45 * exit(). fork() ends up here because the copy-on-write mechanism needs to write-protect
46 * the PTEs of the parent task.
49 flush_tlb_mm (struct mm_struct *mm)
54 set_bit(mm->context, ia64_ctx.flushmap);
57 if (atomic_read(&mm->mm_users) == 0)
58 return; /* happens as a result of exit_mmap() */
63 local_finish_flush_tlb_mm(mm);
67 extern void flush_tlb_range (struct vm_area_struct *vma, unsigned long start, unsigned long end);
70 * Page-granular tlb flush.
73 flush_tlb_page (struct vm_area_struct *vma, unsigned long addr)
76 flush_tlb_range(vma, (addr & PAGE_MASK), (addr & PAGE_MASK) + PAGE_SIZE);
78 if (vma->vm_mm == current->active_mm)
79 ia64_ptcl(addr, (PAGE_SHIFT << 2));
81 vma->vm_mm->context = 0;
86 * Flush the TLB entries mapping the virtually mapped linear page
87 * table corresponding to address range [START-END).
90 flush_tlb_pgtables (struct mm_struct *mm, unsigned long start, unsigned long end)
93 * Deprecated. The virtual page table is now flushed via the normal gather/flush
94 * interface (see tlb.h).
98 #define flush_tlb_kernel_range(start, end) flush_tlb_all() /* XXX fix me */
100 #endif /* _ASM_IA64_TLBFLUSH_H */