* embedding these tags into addresses that point to these memory regions, and
* checking that the memory and the pointer tags match on memory accesses)
* redefine this macro to strip tags from pointers.
- * It's defined as noop for arcitectures that don't support memory tagging.
+ * It's defined as noop for architectures that don't support memory tagging.
*/
#ifndef untagged_addr
#define untagged_addr(addr) (addr)
# define VM_GROWSUP VM_NONE
#endif
+#ifdef CONFIG_HAVE_ARCH_USERFAULTFD_MINOR
+# define VM_UFFD_MINOR_BIT 37
+# define VM_UFFD_MINOR BIT(VM_UFFD_MINOR_BIT) /* UFFD minor faults */
+#else /* !CONFIG_HAVE_ARCH_USERFAULTFD_MINOR */
+# define VM_UFFD_MINOR VM_NONE
+#endif /* CONFIG_HAVE_ARCH_USERFAULTFD_MINOR */
+
/* Bits set in the VMA until the stack is in its final location */
#define VM_STACK_INCOMPLETE_SETUP (VM_RAND_READ | VM_SEQ_READ)
}
#endif
+static inline bool is_zone_movable_page(const struct page *page)
+{
+ return page_zonenum(page) == ZONE_MOVABLE;
+}
+
#ifdef CONFIG_DEV_PAGEMAP_OPS
void free_devmap_managed_page(struct page *page);
DECLARE_STATIC_KEY_FALSE(devmap_managed_key);
}
#endif
+/* MIGRATE_CMA and ZONE_MOVABLE do not allow pin pages */
+#ifdef CONFIG_MIGRATION
+static inline bool is_pinnable_page(struct page *page)
+{
+ return !(is_zone_movable_page(page) || is_migrate_cma_page(page)) ||
+ is_zero_pfn(page_to_pfn(page));
+}
+#else
+static inline bool is_pinnable_page(struct page *page)
+{
+ return true;
+}
+#endif
+
static inline void set_page_zone(struct page *page, enum zone_type zone)
{
page->flags &= ~(ZONES_MASK << ZONES_PGSHIFT);