Re: [linux-usb-devel] Re: [BK PATCH] USB changes for 2.5.34

Jeff Dike
2002-09-16T03:52:53Z

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