Re: [BK PATCH] PCI Express patches for 2.4.27-pre3

[Matthew Wilcox <willy@debian.org>]

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.

-- 
"Next the statesmen will invent cheap lies, putting the blame upon 
the nation that is attacked, and every man will be glad of those
conscience-soothing falsities, and will diligently study them, and refuse
to examine any refutations of them; and thus he will by and by convince 
himself that the war is just, and will thank God for the better sleep 
he enjoys after this process of grotesque self-deception." -- Mark Twain