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>
12 #include <asm/intrinsics.h>
13 #include <asm/mmu_context.h>
17 * Now for some TLB flushing routines. This is the kind of stuff that
18 * can be very expensive, so try to avoid them whenever possible.
22 * Flush everything (kernel mapping may also have changed due to
25 extern void local_flush_tlb_all (void);
28 extern void smp_flush_tlb_all (void);
29 extern void smp_flush_tlb_mm (struct mm_struct *mm);
30 extern void smp_flush_tlb_cpumask (cpumask_t xcpumask);
31 # define flush_tlb_all() smp_flush_tlb_all()
33 # define flush_tlb_all() local_flush_tlb_all()
34 # define smp_flush_tlb_cpumask(m) local_flush_tlb_all()
38 local_finish_flush_tlb_mm (struct mm_struct *mm)
40 if (mm == current->active_mm)
45 * Flush a specified user mapping. This is called, e.g., as a result of fork() and
46 * exit(). fork() ends up here because the copy-on-write mechanism needs to write-protect
47 * the PTEs of the parent task.
50 flush_tlb_mm (struct mm_struct *mm)
55 set_bit(mm->context, ia64_ctx.flushmap);
58 if (atomic_read(&mm->mm_users) == 0)
59 return; /* happens as a result of exit_mmap() */
64 local_finish_flush_tlb_mm(mm);
68 extern void flush_tlb_range (struct vm_area_struct *vma, unsigned long start, unsigned long end);
71 * Page-granular tlb flush.
74 flush_tlb_page (struct vm_area_struct *vma, unsigned long addr)
77 flush_tlb_range(vma, (addr & PAGE_MASK), (addr & PAGE_MASK) + PAGE_SIZE);
79 if (vma->vm_mm == current->active_mm)
80 ia64_ptcl(addr, (PAGE_SHIFT << 2));
82 vma->vm_mm->context = 0;
87 * Flush the local TLB. Invoked from another cpu using an IPI.
90 void smp_local_flush_tlb(void);
92 #define smp_local_flush_tlb()
95 static inline void flush_tlb_kernel_range(unsigned long start,
98 flush_tlb_all(); /* XXX fix me */
101 #endif /* _ASM_IA64_TLBFLUSH_H */