diff options
Diffstat (limited to 'include/linux/pgtable.h')
| -rw-r--r-- | include/linux/pgtable.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h index ee3148ef87f6..652f287c1ef6 100644 --- a/include/linux/pgtable.h +++ b/include/linux/pgtable.h @@ -1557,6 +1557,18 @@ static inline pgprot_t pgprot_modify(pgprot_t oldprot, pgprot_t newprot) #define arch_start_context_switch(prev) do {} while (0) #endif +/* + * Some platforms can customize the PTE soft-dirty bit making it unavailable + * even if the architecture provides the resource. + * Adding this API allows architectures to add their own checks for the + * devices on which the kernel is running. + * Note: When overriding it, please make sure the CONFIG_MEM_SOFT_DIRTY + * is part of this macro. + */ +#ifndef pgtable_supports_soft_dirty +#define pgtable_supports_soft_dirty() IS_ENABLED(CONFIG_MEM_SOFT_DIRTY) +#endif + #ifdef CONFIG_HAVE_ARCH_SOFT_DIRTY #ifndef CONFIG_ARCH_ENABLE_THP_MIGRATION static inline pmd_t pmd_swp_mksoft_dirty(pmd_t pmd) |