parisc: fix cache-flushing
authorHelge Deller <deller@gmx.de>
Fri, 31 Jan 2014 20:33:17 +0000 (21:33 +0100)
committerHelge Deller <deller@gmx.de>
Sun, 2 Feb 2014 19:57:16 +0000 (20:57 +0100)
commit57737c49dd72c96cfbcd4f66559f3ffc399aeb4f
tree390ecd631d941babf6f7390bbac4f7c6187f957a
parent8a10bc9d27ceb084b0d8be621a033a475eb9fdfd
parisc: fix cache-flushing

This commit:
f8dae00684d678afa13041ef170cecfd1297ed40: parisc: Ensure full cache coherency for kmap/kunmap
caused negative caching side-effects, e.g. hanging processes with expect and
too many inequivalent alias messages from flush_dcache_page() on Debian 5 systems.

This patch now partly reverts it and has been in production use on our debian buildd
makeservers since a week without any major problems.

Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: John David Anglin <dave.anglin@bell.net>
Cc: stable@vger.kernel.org # v3.9+
Signed-off-by: Helge Deller <deller@gmx.de>
arch/parisc/include/asm/cacheflush.h
arch/parisc/include/asm/page.h
arch/parisc/kernel/cache.c