diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-generic/pgtable.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h index 129de9204d18..067922c06c29 100644 --- a/include/asm-generic/pgtable.h +++ b/include/asm-generic/pgtable.h @@ -673,6 +673,26 @@ static inline int pmd_trans_unstable(pmd_t *pmd) #endif } +#ifndef CONFIG_NUMA_BALANCING +/* + * Technically a PTE can be PROTNONE even when not doing NUMA balancing but + * the only case the kernel cares is for NUMA balancing and is only ever set + * when the VMA is accessible. For PROT_NONE VMAs, the PTEs are not marked + * _PAGE_PROTNONE so by by default, implement the helper as "always no". It + * is the responsibility of the caller to distinguish between PROT_NONE + * protections and NUMA hinting fault protections. + */ +static inline int pte_protnone(pte_t pte) +{ + return 0; +} + +static inline int pmd_protnone(pmd_t pmd) +{ + return 0; +} +#endif /* CONFIG_NUMA_BALANCING */ + #ifdef CONFIG_NUMA_BALANCING /* * _PAGE_NUMA distinguishes between an unmapped page table entry, an entry that |