From: Dan Malek <dan@mvista•com>
To: Julia Elbert <jelbert@enerdyne•com>
Cc: "'linuxppc-embedded@lists•linuxppc.org'"
<linuxppc-embedded@lists•linuxppc.org>
Subject: Re: switching linux kernels
Date: Tue, 26 Sep 2000 11:54:48 -0400 [thread overview]
Message-ID: <39D0C6C8.3091880B@mvista.com> (raw)
In-Reply-To: 67505026E29DD311A9AA00508B7315F350A522@EXCHANGE
Julia Elbert wrote:
> I am switching to HardHat 2.2.13 from ppc 2.2.13.
> .....whatsoever, just the data is corrupted some how.
Depending upon the flavor of the day ppc 2.2.13, it could be a cache
configuration difference. The old 2.2.13 kernels often had the data
cache in the write-through mode to avoid a variety of bugs in both
hardware and software.
The HHLinux 2.2.13 (and all later kernels) run with copy-back data
cache and subsequent silicon errata fixes, so there may be a cache
coherency hole in the way your driver manages it's space.
-- Dan
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~2000-09-26 15:54 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-09-26 0:02 switching linux kernels Julia Elbert
2000-09-26 0:25 ` Graham Stoney
2000-09-26 15:54 ` Dan Malek [this message]
-- strict thread matches above, loose matches on Subject: below --
2000-09-26 16:59 Julia Elbert
2000-09-26 18:24 Julia Elbert
2000-09-26 22:34 Julia Elbert
2000-09-27 0:40 ` Graham Stoney
2000-09-27 5:59 ` Dan Malek
2000-09-27 6:41 ` Graham Stoney
2000-09-27 9:31 ` Rob Taylor
2000-09-27 16:03 ` Dan Malek
2000-10-06 16:50 ` Rob Taylor
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