x86: mask NX from pte_pfn
In 32-bit PAE, mask NX from pte_pfn, since it isn't part of the PFN. This code is due for unification anyway, but this fixes a latent bug. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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@ -155,7 +155,7 @@ static inline int pte_none(pte_t pte)
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static inline unsigned long pte_pfn(pte_t pte)
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{
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return pte_val(pte) >> PAGE_SHIFT;
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return (pte_val(pte) & ~_PAGE_NX) >> PAGE_SHIFT;
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}
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extern unsigned long long __supported_pte_mask;
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