From: Steven Price <steven.price@arm.com>
Subject: sparc: mm: add p?d_leaf() definitions

walk_page_range() is going to be allowed to walk page tables other than
those of user space.  For this it needs to know when it has reached a
'leaf' entry in the page tables.  This information is provided by the
p?d_leaf() functions/macros.

For sparc 64 bit, pmd_large() and pud_large() are already provided, so add
macros to provide the p?d_leaf names required by the generic code.

Link: http://lkml.kernel.org/r/20191218162402.45610-10-steven.price@arm.com
Signed-off-by: Steven Price <steven.price@arm.com>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Ard Biesheuvel <redacted>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christian Borntraeger <redacted>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Heiko Carstens <redacted>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Hogan <jhogan@kernel.org>
Cc: James Morse <james.morse@arm.com>
Cc: Jerome Glisse <redacted>
Cc: "Liang, Kan" <redacted>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Paul Burton <redacted>
Cc: Paul Mackerras <redacted>
Cc: Paul Walmsley <redacted>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ralf Baechle <redacted>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Thomas Gleixner <redacted>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vineet Gupta <redacted>
Cc: Will Deacon <will@kernel.org>
Cc: Zong Li <redacted>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 arch/sparc/include/asm/pgtable_64.h |    2 ++
 1 file changed, 2 insertions(+)

--- a/arch/sparc/include/asm/pgtable_64.h~sparc-mm-add-pd_leaf-definitions
+++ a/arch/sparc/include/asm/pgtable_64.h

@@ -683,6 +683,7 @@ static inline unsigned long pte_special(
 	return pte_val(pte) & _PAGE_SPECIAL;
 }
 
+#define pmd_leaf	pmd_large
 static inline unsigned long pmd_large(pmd_t pmd)
 {
 	pte_t pte = __pte(pmd_val(pmd));

@@ -867,6 +868,7 @@ static inline unsigned long pud_page_vad
 /* only used by the stubbed out hugetlb gup code, should never be called */
 #define p4d_page(p4d)			NULL
 
+#define pud_leaf	pud_large
 static inline unsigned long pud_large(pud_t pud)
 {
 	pte_t pte = __pte(pud_val(pud));

_