arm64, mm, numa: Add NUMA balancing support for arm64.

[mirror_ubuntu-jammy-kernel.git] / arch / arm64 / include / asm / pgtable.h

diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
index 2abfa4d09e652ff5cc122d179a2f36502d88c71e..3c91b179089a29e6638fcc3089311978a9e12ac6 100644 (file)
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -266,6 +266,21 @@ static inline pgprot_t mk_sect_prot(pgprot_t prot)
        return __pgprot(pgprot_val(prot) & ~PTE_TABLE_BIT);
 }
 
+#ifdef CONFIG_NUMA_BALANCING
+/*
+ * See the comment in include/asm-generic/pgtable.h
+ */
+static inline int pte_protnone(pte_t pte)
+{
+       return (pte_val(pte) & (PTE_VALID | PTE_PROT_NONE)) == PTE_PROT_NONE;
+}
+
+static inline int pmd_protnone(pmd_t pmd)
+{
+       return pte_protnone(pmd_pte(pmd));
+}
+#endif
+
 /*
  * THP definitions.
  */