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parisc: change value of SHMLBA from 0x00400000 to PAGE_SIZE

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On parisc, SHMLBA was defined to 0x00400000 (4MB) to reflect that we need to
take care of our caches for shared mappings. But actually, we can map a file at
any multiple address of PAGE_SIZE, so let us correct that now with a value of
PAGE_SIZE for SHMLBA.  Instead we now take care of this cache colouring via the
constant SHM_COLOUR while we map shared pages.

Signed-off-by: Helge Deller <deller@gmx.de>
CC: Jeroen Roovers <jer@gentoo.org>
CC: John David Anglin <dave.anglin@bell.net>
CC: Carlos O'Donell <carlos@systemhalted.org>
Cc: stable@kernel.org [3.13+]
This commit is contained in:
Helge Deller
2014-04-09 19:49:28 +02:00
parent 496252f787
commit 0ef36bd2b3
3 changed files with 11 additions and 11 deletions
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5
arch/parisc/include/asm/shmparam.h
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@@ -1,8 +1,7 @@
#ifndef _ASMPARISC_SHMPARAM_H
#define _ASMPARISC_SHMPARAM_H
#define __ARCH_FORCE_SHMLBA 1
#define SHMLBA 0x00400000 /* attach addr needs to be 4 Mb aligned */
#define SHMLBA PAGE_SIZE /* attach addr a multiple of this */
#define SHM_COLOUR 0x00400000 /* shared mappings colouring */
#endif /* _ASMPARISC_SHMPARAM_H */