Date: Sun, 01 Aug 2004 14:29:37 -0600 From: Scott Long <scottl@samsco.org> To: Poul-Henning Kamp <phk@phk.freebsd.dk> Cc: arch@freebsd.org Subject: Re: PCI-Express support Message-ID: <410D52B1.2010807@samsco.org> In-Reply-To: <58751.1091391397@critter.freebsd.dk> References: <58751.1091391397@critter.freebsd.dk>
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Poul-Henning Kamp wrote: > In message <410D2FEA.5050504@samsco.org>, Scott Long writes: > >>All, >> >>I've emailed before about supporting various aspects of PCI-Express and >>especially MSI, but haven't really gotten too far with it due to lack of >>resources. I now how access to a system that can do PCI-Express (PCI-E) >>so I'd like to revisit it and see what can be added for 5-STABLE. There >>are three general areas that need to be addressed in some form or another: >> > > [...] > >>Adding this for 5.3 is feasible, I think, and doesn't add a whole lot >>of risk. > > > OK, who are you and what have you done to Scott Long ? > > Scott would never even think about suggesting something like this two > weeks before we lock down the tree for a -stable branching. > To answer you and Warner, this is functionality that is optional and has little risk to the existing infrastructure. John has done a great job with abstracting the low-level interrupt drivers, and this would just be another one of those. The support would be marked as *experimental*, but with the API in place it would give us more freedom to make it happen. Intel is pushing really hard to get adoption of this stuff in the small/medium size server area, and 5.x is going to suffer if it's not there. Scott
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