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[PATCH] paravirt: pte clear not present

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Change pte_clear_full to a more appropriately named pte_clear_not_present,
allowing optimizations when not-present mapping changes need not be reflected
in the hardware TLB for protected page table modes.  There is also another
case that can use it in the fremap code.

Signed-off-by: Zachary Amsden <[email protected]>
Signed-off-by: Jeremy Fitzhardinge <[email protected]>
Cc: Rusty Russell <[email protected]>
Cc: Andi Kleen <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Zachary Amsden 2006-09-30 23:29:31 -07:00 • committed by Linus Torvalds
commit 9888a1cae3
3 changed files with 9 additions and 4 deletions
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2
mm/fremap.c
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@ -39,7 +39,7 @@ static int zap_pte(struct mm_struct *mm, struct vm_area_struct *vma,
} else {
if (!pte_file(pte))
free_swap_and_cache(pte_to_swp_entry(pte));
pte_clear(mm, addr, ptep);
pte_clear_not_present_full(mm, addr, ptep, 0);
}
return !!page;
}