powerpc/mm: Convert pte_user() to static inline

In a subsequent patch we want to add a second definition of pte_user().
Before we do that, make the signature clear, ie. it takes a pte_t and
returns bool.

We move it up inside the existing #ifndef __ASSEMBLY__ block, but
otherwise it's a straight conversion.

Convert the call in settlbcam(), which passes an unsigned long, to pass
a pte_t.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
diff --git a/arch/powerpc/include/asm/pte-common.h b/arch/powerpc/include/asm/pte-common.h
index 9f5dea5..5f45753 100644
--- a/arch/powerpc/include/asm/pte-common.h
+++ b/arch/powerpc/include/asm/pte-common.h
@@ -76,6 +76,16 @@
  */
 #ifndef __ASSEMBLY__
 extern unsigned long bad_call_to_PMD_PAGE_SIZE(void);
+
+/*
+ * Don't just check for any non zero bits in __PAGE_USER, since for book3e
+ * and PTE_64BIT, PAGE_KERNEL_X contains _PAGE_BAP_SR which is also in
+ * _PAGE_USER.  Need to explicitly match _PAGE_BAP_UR bit in that case too.
+ */
+static inline bool pte_user(pte_t pte)
+{
+	return (pte_val(pte) & _PAGE_USER) == _PAGE_USER;
+}
 #endif /* __ASSEMBLY__ */
 
 /* Location of the PFN in the PTE. Most 32-bit platforms use the same
@@ -184,13 +194,6 @@
 /* Make modules code happy. We don't set RO yet */
 #define PAGE_KERNEL_EXEC	PAGE_KERNEL_X
 
-/*
- * Don't just check for any non zero bits in __PAGE_USER, since for book3e
- * and PTE_64BIT, PAGE_KERNEL_X contains _PAGE_BAP_SR which is also in
- * _PAGE_USER.  Need to explicitly match _PAGE_BAP_UR bit in that case too.
- */
-#define pte_user(val)		((val & _PAGE_USER) == _PAGE_USER)
-
 /* Advertise special mapping type for AGP */
 #define PAGE_AGP		(PAGE_KERNEL_NC)
 #define HAVE_PAGE_AGP