From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <39D0C6C8.3091880B@mvista.com> Date: Tue, 26 Sep 2000 11:54:48 -0400 From: Dan Malek MIME-Version: 1.0 To: Julia Elbert CC: "'linuxppc-embedded@lists.linuxppc.org'" Subject: Re: switching linux kernels References: <67505026E29DD311A9AA00508B7315F350A522@EXCHANGE> Content-Type: text/plain; charset=us-ascii Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: 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/