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x86-64: don't check for map replacement

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The check prevents flags on mappings from being changed, which is not
desireable.  There's no need to check for replacing a mapping, and
x86-32 does not do this check.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Jeremy Fitzhardinge 2008-09-07 15:21:17 -07:00 committed by Ingo Molnar
parent 88b4c14696
commit a32ad46267
1 changed files with 0 additions and 3 deletions
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3
arch/x86/mm/init_64.c
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@ -196,9 +196,6 @@ set_pte_vaddr_pud(pud_t *pud_page, unsigned long vaddr, pte_t new_pte)
}
pte = pte_offset_kernel(pmd, vaddr);
if (!pte_none(*pte) && pte_val(new_pte) &&
pte_val(*pte) != (pte_val(new_pte) & __supported_pte_mask))
pte_ERROR(*pte);
set_pte(pte, new_pte);
/*