Messages in this thread |  | | | Date | Tue, 25 May 2004 14:24:13 +0100 | | From | Matthew Wilcox <> | | Subject | Re: [BK PATCH] PCI Express patches for 2.4.27-pre3 |
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On Tue, May 25, 2004 at 03:01:16PM +0200, Arjan van de Ven wrote: > > On Tue, May 25, 2004 at 09:54:53AM -0300, Marcelo Tosatti wrote: > > > > Marcelo, feel free to tell me otherwise if you do not want > > > > this in the 2.4 tree. > > > > Is this code necessary for PCI-Express devices/busses to work properly? > > afaik not. It's an enhancement to make config space access to them somewhat > faster, but they just work using the existing method.
It also allows access to the top 3840 bytes of config space. The *spec* says you can't require access to that area for correct functioning of the device, but we all know how much people love to follow specs.
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