Re: USB mass storage and ARM cache coherency

From: Catalin Marinas
Date: Thu Mar 04 2010 - 10:32:42 EST


On Thu, 2010-03-04 at 14:21 +0000, James Bottomley wrote:
> The thing which was discovered in this thread is basically that ARM is
> handling deferred flushing (for D/I coherency) in a slightly different
> way from everyone else ...

Doing a grep for PG_dcache_dirty defined in terms of PG_arch_1 reveals
that MIPS, Parisc, Score, SH and SPARC do similar things to ARM. PowerPC
and IA-64 use PG_arch_1 as a clean rather than dirty bit.

--
Catalin

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