From: Segher Boessenkool <segher@kernel.crashing.org>
To: "Vladislav D. Buzov" <vbuzov@ru.mvista.com>
Cc: linuxppc-dev list <linuxppc-dev@ozlabs.org>
Subject: Re: [RFC/PATCH] powerpc: MPC7450 L2 HW cache flush feature utilization
Date: Fri, 15 Jun 2007 11:01:55 +0200 [thread overview]
Message-ID: <a849b0caedb72f3799c095d3ab6cebd1@kernel.crashing.org> (raw)
In-Reply-To: <46725411.3080002@ru.mvista.com>
> Hrm. I don't think that cache invalidation should be skipped. It is
> done after _set_L2CR() explicitly disabled the cache, in part of cache
> enabling procedure. Note that cache is flushed only if _set_L2CR() is
> called for already enabled cache. So, to skip cache invalidation there
> is a need to somehow track whether the cache has been
> flushed/invalidated before disabling or not. Since the manual
> invalidation does not break anything I think it is better to leave it
> as is rather than overload a _set_L2CR() logic.
Yeah just leave it, it definitely is the safer thing to do.
Do fix the comment though ;-)
Segher
next prev parent reply other threads:[~2007-06-15 9:02 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-13 10:19 [RFC/PATCH] powerpc: MPC7450 L2 HW cache flush feature utilization Vladislav Buzov
2007-06-14 13:56 ` Segher Boessenkool
2007-06-14 17:12 ` Vladislav Buzov
2007-06-14 22:26 ` Mark A. Greer
2007-06-15 8:16 ` Segher Boessenkool
2007-06-15 8:55 ` Vladislav D. Buzov
2007-06-15 9:01 ` Segher Boessenkool [this message]
2007-06-15 9:33 ` Vladislav D. Buzov
2007-06-15 10:44 ` Segher Boessenkool
2007-06-15 8:14 ` Segher Boessenkool
2007-06-15 8:42 ` Vladislav D. Buzov
2007-06-15 8:56 ` Segher Boessenkool
2007-06-15 21:20 ` Mark A. Greer
2007-06-15 22:14 ` Segher Boessenkool
2007-06-21 12:37 ` Benjamin Herrenschmidt
2007-06-22 15:22 ` Vladislav Buzov
2007-06-23 15:46 ` Segher Boessenkool
2007-06-25 14:09 ` Vladislav Buzov
2007-06-28 8:24 ` Segher Boessenkool
2007-06-28 9:13 ` Benjamin Herrenschmidt
2007-06-28 10:47 ` Vladislav Buzov
2007-06-28 11:09 ` Benjamin Herrenschmidt
2007-06-25 19:00 ` Vladislav Buzov
2007-06-28 8:35 ` Segher Boessenkool
2007-06-29 10:41 ` Vladislav Buzov
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