mm, dax, gpu: convert vm_insert_mixed to pfn_t
Convert the raw unsigned long 'pfn' argument to pfn_t for the purpose of
evaluating the PFN_MAP and PFN_DEV flags. When both are set it triggers
_PAGE_DEVMAP to be set in the resulting pte.
There are no functional changes to the gpu drivers as a result of this
conversion.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Cc: Dave Hansen <dave@sr71.net>
Cc: David Airlie <airlied@linux.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/linux/pfn_t.h b/include/linux/pfn_t.h
index c557a0e..bdaa275 100644
--- a/include/linux/pfn_t.h
+++ b/include/linux/pfn_t.h
@@ -64,4 +64,31 @@
{
return pfn_to_pfn_t(page_to_pfn(page));
}
+
+static inline int pfn_t_valid(pfn_t pfn)
+{
+ return pfn_valid(pfn_t_to_pfn(pfn));
+}
+
+#ifdef CONFIG_MMU
+static inline pte_t pfn_t_pte(pfn_t pfn, pgprot_t pgprot)
+{
+ return pfn_pte(pfn_t_to_pfn(pfn), pgprot);
+}
+#endif
+
+#ifdef __HAVE_ARCH_PTE_DEVMAP
+static inline bool pfn_t_devmap(pfn_t pfn)
+{
+ const unsigned long flags = PFN_DEV|PFN_MAP;
+
+ return (pfn.val & flags) == flags;
+}
+#else
+static inline bool pfn_t_devmap(pfn_t pfn)
+{
+ return false;
+}
+pte_t pte_mkdevmap(pte_t pte);
+#endif
#endif /* _LINUX_PFN_T_H_ */
