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#ifndef _ASM_IA64_TLBFLUSH_H
#define _ASM_IA64_TLBFLUSH_H
/*
* Copyright (C) 2002 Hewlett-Packard Co
* David Mosberger-Tang <davidm@hpl.hp.com>
*/
#include <linux/config.h>
#include <linux/mm.h>
#include <asm/intrinsics.h>
#include <asm/mmu_context.h>
#include <asm/page.h>
/*
* Now for some TLB flushing routines. This is the kind of stuff that
* can be very expensive, so try to avoid them whenever possible.
*/
/*
* Flush everything (kernel mapping may also have changed due to
* vmalloc/vfree).
*/
extern void local_flush_tlb_all (void);
#ifdef CONFIG_SMP
extern void smp_flush_tlb_all (void);
extern void smp_flush_tlb_mm (struct mm_struct *mm);
# define flush_tlb_all() smp_flush_tlb_all()
#else
# define flush_tlb_all() local_flush_tlb_all()
#endif
static inline void
local_finish_flush_tlb_mm (struct mm_struct *mm)
{
if (mm == current->active_mm)
activate_context(mm);
}
/*
* Flush a specified user mapping. This is called, e.g., as a result of fork() and
* exit(). fork() ends up here because the copy-on-write mechanism needs to write-protect
* the PTEs of the parent task.
*/
static inline void
flush_tlb_mm (struct mm_struct *mm)
{
if (!mm)
return;
mm->context = 0;
if (atomic_read(&mm->mm_users) == 0)
return; /* happens as a result of exit_mmap() */
#ifdef CONFIG_SMP
smp_flush_tlb_mm(mm);
#else
local_finish_flush_tlb_mm(mm);
#endif
}
extern void flush_tlb_range (struct vm_area_struct *vma, unsigned long start, unsigned long end);
/*
* Page-granular tlb flush.
*/
static inline void
flush_tlb_page (struct vm_area_struct *vma, unsigned long addr)
{
#ifdef CONFIG_SMP
flush_tlb_range(vma, (addr & PAGE_MASK), (addr & PAGE_MASK) + PAGE_SIZE);
#else
if (vma->vm_mm == current->active_mm)
ia64_ptcl(addr, (PAGE_SHIFT << 2));
else
vma->vm_mm->context = 0;
#endif
}
/*
* Flush the TLB entries mapping the virtually mapped linear page
* table corresponding to address range [START-END).
*/
static inline void
flush_tlb_pgtables (struct mm_struct *mm, unsigned long start, unsigned long end)
{
/*
* Deprecated. The virtual page table is now flushed via the normal gather/flush
* interface (see tlb.h).
*/
}
#define flush_tlb_kernel_range(start, end) flush_tlb_all() /* XXX fix me */
#endif /* _ASM_IA64_TLBFLUSH_H */
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