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bitkeeper revision 1.1159.1.212 (416485874bmgh8xNVGGY3ZNzyzd9QQ)
Make pmd_present test correct in writable pagetables mode.
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cl349@freefall.cl.cam.ac.uk committed
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1 file changed
+3
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@@ -211,7 +211,9 @@ extern unsigned long pg0[];
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#define pte_clear(xp) do { set_pte(xp, __pte(0)); } while (0)
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#define pmd_none(x) (!pmd_val(x))
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#define pmd_present(x) (pmd_val(x) & _PAGE_PRESENT)
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/* pmd_present doesn't just test the _PAGE_PRESENT bit since wr.p.t.
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can temporarily clear it. */
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#define pmd_present(x) (pmd_val(x))
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/* pmd_clear below */
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#define pmd_bad(x) ((pmd_val(x) & (~PAGE_MASK & ~_PAGE_USER & ~_PAGE_PRESENT)) != (_KERNPG_TABLE & ~_PAGE_PRESENT))
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