From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ronald G Minnich To: <9fans@cse.psu.edu> Subject: Re: [9fans] IRQs again... In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Date: Tue, 28 May 2002 08:17:20 -0600 Topicbox-Message-UUID: 9dcd0ff8-eaca-11e9-9e20-41e7f4b1d025 On Tue, 28 May 2002, David Gordon Hogan wrote: > Do you actually have a hot-swappable cPCI system, or > is this all hypothetical? I've got one, plan to get more, and would like to fix this. Plus the one I have (www.cluster-labs.de) is full of nodes that ONLY run linuxbios. You can't run a legacy bios. So we've got to fix this for our own uses. Otherwise everything just keeps running Linux. I'm willing to fix this in linuxbios, in fact I started to, just for Plan 9. What stopped me cold was looking at all the corner cases -- it seems no matter what we do we'll always be doing something wrong for some configurations -- not even versions, configurations -- of some OSes. Ouch. I think this is why Linux has started ignoring a lot of the BIOS settings and just does its own. > I think our main reason is that (we think) we've got better > things to do. That's a good reason. I mean that. There's always too much work. I was worried that there was a technical gotcha. > So the `guessing' code probably isn't used all that often. Except in our lab ... where it is used a lot and does seem to do ok. > But, by all means, don't let me stop you from adding hot > swap support to the kernel :-) Works for me. We'll see what we can do. Thanks. ron