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Subject[PATCH v3 05/34] c6x: mm: Add p?d_large() definitions
Date
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 c6x there's no MMU so there's never a large page, so just add stubs.

CC: Mark Salter <msalter@redhat.com>
CC: Aurelien Jacquiot <jacquiot.aurelien@gmail.com>
CC: linux-c6x-dev@linux-c6x.org
Signed-off-by: Steven Price <steven.price@arm.com>
---
arch/c6x/include/asm/pgtable.h | 2 ++
1 file changed, 2 insertions(+)

diff --git a/arch/c6x/include/asm/pgtable.h b/arch/c6x/include/asm/pgtable.h
index ec4db6df5e0d..d532b7df9001 100644
--- a/arch/c6x/include/asm/pgtable.h
+++ b/arch/c6x/include/asm/pgtable.h
@@ -26,6 +26,7 @@
#define pgd_present(pgd) (1)
#define pgd_none(pgd) (0)
#define pgd_bad(pgd) (0)
+#define pgd_large(pgd) (0)
#define pgd_clear(pgdp)
#define kern_addr_valid(addr) (1)

@@ -34,6 +35,7 @@
#define pmd_present(x) (pmd_val(x))
#define pmd_clear(xp) do { set_pmd(xp, __pmd(0)); } while (0)
#define pmd_bad(x) (pmd_val(x) & ~PAGE_MASK)
+#define pmd_large(pgd) (0)

#define PAGE_NONE __pgprot(0) /* these mean nothing to NO_MM */
#define PAGE_SHARED __pgprot(0) /* these mean nothing to NO_MM */
--
2.20.1
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