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x86/speculation/l1tf: Invert all not present mappings
For kernel mappings PAGE_PROTNONE is not necessarily set for a non present mapping, but the inversion logic explicitely checks for !PRESENT and PROT_NONE. Remove the PROT_NONE check and make the inversion unconditional for all not present mappings. Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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@ -6,7 +6,7 @@
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static inline bool __pte_needs_invert(u64 val)
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{
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return (val & (_PAGE_PRESENT|_PAGE_PROTNONE)) == _PAGE_PROTNONE;
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return !(val & _PAGE_PRESENT);
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}
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/* Get a mask to xor with the page table entry to get the correct pfn. */
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