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x86 PAT: fix mmap() of holes

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do not return a -EINVAL when mmap()-ing PCI holes.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Arjan van de Ven <arjan@linux.intel.com>
This commit is contained in:
Ingo Molnar 2008-04-18 21:32:22 +02:00
parent 2cca775bae
commit d1a4be630f
1 changed files with 1 additions and 1 deletions
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2
arch/x86/mm/pageattr.c
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@ -542,7 +542,7 @@ static int __change_page_attr(struct cpa_data *cpa, int primary)
repeat:
kpte = lookup_address(address, &level);
if (!kpte)
return primary ? -EINVAL : 0;
return 0;
old_pte = *kpte;
if (!pte_val(old_pte)) {