Re: [PATCH 36/37] Cavium OCTEON: pmd_none - use pmd_val() in pmd_val().

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Hello.

ddaney@xxxxxxxxxxxxxxxxxx wrote:

Before marking pmd_val as invalid_pte_table, factor in existing value
for pmd_val.

   I didn't get it -- this function doesn't mark anything.

Signed-off-by: Paul Gortmaker <Paul.Gortmaker@xxxxxxxxxxxxx>
Signed-off-by: David Daney <ddaney@xxxxxxxxxxxxxxxxxx>

diff --git a/arch/mips/include/asm/pgtable-64.h b/arch/mips/include/asm/pgtable-64.h
index 943515f..bb93bd5 100644
--- a/arch/mips/include/asm/pgtable-64.h
+++ b/arch/mips/include/asm/pgtable-64.h
@@ -129,7 +129,12 @@ extern pmd_t empty_bad_pmd_table[PTRS_PER_PMD];
  */
 static inline int pmd_none(pmd_t pmd)
 {
+#ifdef CONFIG_CPU_CAVIUM_OCTEON
+	return (pmd_val(pmd) == (unsigned long) invalid_pte_table) ||
+				(!pmd_val(pmd));

Unneeded parens around !pmd_val(pmd) -- ! operator is higher priority than any of && and ||.

WBR, Sergei


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