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To: Daniel Jacobowitz <dan@debian.org>
cc: Linus Torvalds <torvalds@transmeta.com>,
       Daniel Phillips <phillips@arcor.de>,
       Alan Cox <alan@lxorguk.ukuu.org.uk>,
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       linux-kernel@vger.kernel.org
Subject: Re: [linux-usb-devel] Re: [BK PATCH] USB changes for 2.5.34 
In-Reply-To: Your message of "Sun, 15 Sep 2002 15:32:23 -0400."
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Date: Sun, 15 Sep 2002 23:55:54 -0500
From: Jeff Dike <jdike@karaya.com>
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dan@debian.org said:
> I run into problems fairly often that I can't reproduce in UML -
> timing sensitive, 

Timing works both ways.  Maybe you run into a bug on native i386 that UML
won't reproduce.  Maybe UML will reproduce bugs you won't see on hardware.
That doesn't help you track down a particular bug you're seeing on hardware,
but as far as overall bug smashing goes, it looks like a wash to me.

> hardware sensitive, etc.  

That's potentially fixable.  UML has SCSI support now, with a USB driver
in the works.  Other hardware access is possible, too.

> UML
> also doesn't use a lot of the code under arch/i386/ (or didn't at
> least) which makes debugging that code under UML a bit futile.

Then we need to push code out from arch into the generic kernel.  That's
happening slowly, but there's a bunch more to go.

				Jeff

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