lkml.org 
[lkml]   [2019]   [Feb]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v3 23/34] xtensa: 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 xtensa, we don't support large pages, so add a stub returning 0.

CC: Chris Zankel <chris@zankel.net>
CC: Max Filippov <jcmvbkbc@gmail.com>
CC: linux-xtensa@linux-xtensa.org
Signed-off-by: Steven Price <steven.price@arm.com>
---
arch/xtensa/include/asm/pgtable.h | 1 +
1 file changed, 1 insertion(+)

diff --git a/arch/xtensa/include/asm/pgtable.h b/arch/xtensa/include/asm/pgtable.h
index 29cfe421cf41..60c3e86b9782 100644
--- a/arch/xtensa/include/asm/pgtable.h
+++ b/arch/xtensa/include/asm/pgtable.h
@@ -266,6 +266,7 @@ static inline void pgtable_cache_init(void) { }
#define pmd_none(pmd) (!pmd_val(pmd))
#define pmd_present(pmd) (pmd_val(pmd) & PAGE_MASK)
#define pmd_bad(pmd) (pmd_val(pmd) & ~PAGE_MASK)
+#define pmd_large(pmd) (0)
#define pmd_clear(pmdp) do { set_pmd(pmdp, __pmd(0)); } while (0)

static inline int pte_write(pte_t pte) { return pte_val(pte) & _PAGE_WRITABLE; }
--
2.20.1
\
 
 \ /
  Last update: 2019-02-27 18:09    [W:0.140 / U:12.004 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site