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x86: cpa: clean up change_page_attr_set/clear()

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Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner 2008-01-30 13:34:08 +01:00 committed by Ingo Molnar
parent 4692a1450b
commit 6eade8ff46
1 changed files with 9 additions and 8 deletions
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13
arch/x86/mm/pageattr.c
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@ -312,10 +312,10 @@ static int change_page_attr_set(unsigned long addr, int numpages,
for (i = 0; i < numpages ; i++) {
pte = lookup_address(addr, &level);
if (pte)
if (!pte)
return -EINVAL;
current_prot = pte_pgprot(*pte);
else
pgprot_val(current_prot) = 0;
pgprot_val(new_prot) =
pgprot_val(current_prot) | pgprot_val(prot);
@ -356,11 +356,12 @@ static int change_page_attr_clear(unsigned long addr, int numpages,
int i, ret;
for (i = 0; i < numpages; i++) {
pte = lookup_address(addr, &level);
if (pte)
if (!pte)
return -EINVAL;
current_prot = pte_pgprot(*pte);
else
pgprot_val(current_prot) = 0;
pgprot_val(new_prot) =
pgprot_val(current_prot) & ~pgprot_val(prot);