[PATCH 5 of 7] x86-64: don't check for map replacement

Jeremy Fitzhardinge
2008-09-07T22:26:16Z

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>
---
arch/x86/mm/init_64.c | 3 ---
1 file changed, 3 deletions(-)

diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -195,9 +195,6 @@
}

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);

/*