From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <3CED2ECD.4090405@embeddededge.com> Date: Thu, 23 May 2002 14:02:53 -0400 From: Dan Malek MIME-Version: 1.0 To: benh@kernel.crashing.org Cc: acurtis@onz.com, Paul Mackerras , linuxppc-dev@lists.linuxppc.org Subject: Re: eieio rule-of-thumb? References: <3CED26BB.2080700@embeddededge.com> <20020523184426.19045@mailhost.mipsys.com> Content-Type: text/plain; charset=us-ascii; format=flowed Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: benh@kernel.crashing.org wrote: > Regarding eieio on uncached, Paul or Anton can tell you more about it, > I think there is still a case where guarded doesn't prevent a load > from moving accross a store. Oh right....You get guarded to prevent out of order loads, and I just get lucky that the uncached store doesn't cross the load. > Regarding the bridge,... OK. I thought that was a PCI master, memory controller thing, not something that would happen from a CPU programmed I/O. > I think it is on desktop CPUs, but again, here, Paul and Anton have more > knowledge than I do. Right. I know I found a couple of things we had to update for the 74xx processors. Thanks. -- Dan ** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/