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SubjectRe: Cache coherency and snooping
From
   From: Ralf Baechle <ralf@linux-mips.org>
Date: Wed, 14 Aug 2002 10:16:54 +0200

If the latter was your intension then ioremap_nocache()
will work as intended.

There are platforms btw where non-L2-cacheable access to RAM is
impossible. It will hang the system in fact if one asked the cpu to
do it.
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