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From:   Steven Price <steven.price@arm.com>
To:     Andrew Morton <akpm@linux-foundation.org>, linux-mm@kvack.org
Cc:     Steven Price <steven.price@arm.com>,
        Andy Lutomirski <luto@kernel.org>,
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        Mark Rutland <Mark.Rutland@arm.com>,
        "Liang, Kan" <kan.liang@linux.intel.com>,
        "David S. Miller" <davem@davemloft.net>, sparclinux@vger.kernel.org
Subject: [PATCH v16 09/25] sparc: mm: Add p?d_leaf() definitions
Date:   Fri,  6 Dec 2019 13:53:00 +0000
Message-Id: <20191206135316.47703-10-steven.price@arm.com>
In-Reply-To: <20191206135316.47703-1-steven.price@arm.com>
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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.

CC: "David S. Miller" <davem@davemloft.net>
CC: sparclinux@vger.kernel.org
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Steven Price <steven.price@arm.com>
---
 arch/sparc/include/asm/pgtable_64.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/sparc/include/asm/pgtable_64.h b/arch/sparc/include/asm/pgtable_64.h
index 6ae8016ef4ec..43206652eaf5 100644
--- a/arch/sparc/include/asm/pgtable_64.h
+++ b/arch/sparc/include/asm/pgtable_64.h
@@ -683,6 +683,7 @@ static inline unsigned long pte_special(pte_t pte)
 	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_vaddr(pud_t pud)
 /* only used by the stubbed out hugetlb gup code, should never be called */
 #define pgd_page(pgd)			NULL
 
+#define pud_leaf	pud_large
 static inline unsigned long pud_large(pud_t pud)
 {
 	pte_t pte = __pte(pud_val(pud));
-- 
2.20.1