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 <[e-mail]>

arch/powerpc/include/asm/pte-common.h

···
  */
 #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
···
 
 /* 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)

arch/powerpc/mm/fsl_booke_mmu.c

···
 		TLBCAM[index].MAS7 = (u64)phys >> 32;
 
 	/* Below is unlikely -- only for large user pages or similar */
-	if (pte_user(flags)) {
+	if (pte_user(__pte(flags))) {
 	   TLBCAM[index].MAS3 |= MAS3_UX | MAS3_UR;
 	   TLBCAM[index].MAS3 |= ((flags & _PAGE_RW) ? MAS3_UW : 0);
 	}