From: Arnd Bergmann <arnd@arndb.de>
To: Chris Zankel <chris@zankel.net>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Paul Mundt <lethal@linux-sh.org>,
magnus.damm@gmail.com, linux-mm@kvack.org,
jayakumar.lkml@gmail.com,
Jesper Nilsson <jesper.nilsson@axis.com>
Subject: xtensa: add pgprot_noncached
Date: Tue, 23 Jun 2009 15:00:31 +0200 [thread overview]
Message-ID: <200906231500.32385.arnd@arndb.de> (raw)
In-Reply-To: <200906231441.37158.arnd@arndb.de>
This adds a straightforward pgprot_noncached() macro for
xtensa, so we can use it in architecture independent code
in the future.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
--- a/arch/xtensa/include/asm/pgtable.h
+++ b/arch/xtensa/include/asm/pgtable.h
@@ -251,6 +251,9 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
return __pte((pte_val(pte) & _PAGE_CHG_MASK) | pgprot_val(newprot));
}
+#define pgprot_noncached(prot) \
+ __pgprot((pgprot_val(prot) & ~_PAGE_CA_MASK) | _PAGE_CA_BYPASS)
+
/*
* Certain architectures need to do special things when pte's
* within a page table are directly modified. Thus, the following
--
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next prev parent reply other threads:[~2009-06-23 12:58 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-14 13:28 [PATCH][RFC] mm: uncached vma support with writenotify Magnus Damm
2009-06-15 3:32 ` Paul Mundt
2009-06-22 22:15 ` Andrew Morton
2009-06-23 12:40 ` Arnd Bergmann
2009-06-23 12:41 ` [PATCH] asm-generic: add dummy pgprot_noncached() Arnd Bergmann
2009-06-23 12:55 ` Paul Mundt
2009-06-23 13:00 ` Arnd Bergmann [this message]
2009-06-23 13:07 ` m32r: define pgprot_noncached Arnd Bergmann
2009-06-23 12:55 ` [PATCH] cris: add pgprot_noncached Arnd Bergmann
2009-06-23 19:20 ` Jesper Nilsson
2009-06-23 20:07 ` Arnd Bergmann
2009-06-23 20:23 ` Jesper Nilsson
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