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From:   Steven Price <steven.price@arm.com>
To:     linux-mm@kvack.org
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        Andy Lutomirski <luto@kernel.org>,
        Ard Biesheuvel <ard.biesheuvel@linaro.org>,
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        Mark Rutland <Mark.Rutland@arm.com>,
        "Liang, Kan" <kan.liang@linux.intel.com>,
        Guo Ren <guoren@kernel.org>
Subject: [PATCH v3 06/34] csky: mm: Add p?d_large() definitions
Date:   Wed, 27 Feb 2019 17:05:40 +0000
Message-Id: <20190227170608.27963-7-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_large() functions/macros.

For csky, we don't support large pages, so add a stub returning 0.

CC: Guo Ren <guoren@kernel.org>
Signed-off-by: Steven Price <steven.price@arm.com>
---
 arch/csky/include/asm/pgtable.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/csky/include/asm/pgtable.h b/arch/csky/include/asm/pgtable.h
index edfcbb25fd9f..4ffdb6bfbede 100644
--- a/arch/csky/include/asm/pgtable.h
+++ b/arch/csky/include/asm/pgtable.h
@@ -158,6 +158,8 @@ static inline int pmd_present(pmd_t pmd)
 	return (pmd_val(pmd) != __pa(invalid_pte_table));
 }
 
+#define pmd_large(pmd)	(0)
+
 static inline void pmd_clear(pmd_t *p)
 {
 	pmd_val(*p) = (__pa(invalid_pte_table));
-- 
2.20.1