From: Ralf Baechle <ralf@linux-mips.org>
To: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: linux-mips@linux-mips.org
Subject: Re: minor c-r4k.c cleanup
Date: Mon, 14 Apr 2003 18:48:33 +0200 [thread overview]
Message-ID: <20030414184833.A19291@linux-mips.org> (raw)
In-Reply-To: <20030415.002425.74756927.anemo@mba.ocn.ne.jp>; from anemo@mba.ocn.ne.jp on Tue, Apr 15, 2003 at 12:24:25AM +0900
On Tue, Apr 15, 2003 at 12:24:25AM +0900, Atsushi Nemoto wrote:
> r4k_dma_cache_xxx should not flush icache ?
The dma_* functions of course don't need I-cache coherence.
> And I wonder why r4k_flush_pcache_mm (and r4k_flush_pcache_all) does
> nothing if cpu_has_dc_aliases was not true. I'm still
> investigating...
R4000SC / R4400SC caches have the subset property. S-cache cacheops
flush the primary caches as well and P-caches must always be a subset
of the S-cache or operation is undefined.
Ralf
prev parent reply other threads:[~2003-04-14 16:48 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-04-14 15:24 minor c-r4k.c cleanup Atsushi Nemoto
2003-04-14 16:48 ` Ralf Baechle [this message]
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