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Re: [Xen-devel] Re: Lockup at boot with nFroce SATA

To: Cédric Schieli <cschieli@xxxxxxxxx>
Subject: Re: [Xen-devel] Re: Lockup at boot with nFroce SATA
From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Date: Sun, 14 Nov 2004 10:00:33 +0000
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In-reply-to: Your message of "Fri, 12 Nov 2004 15:07:15 GMT." <loom.20041112T160407-128@xxxxxxxxxxxxxx>
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> Ian Pratt <Ian.Pratt <at> cl.cam.ac.uk> writes:
> > Xen is less forgiving of technically buggy drivers than standard
> > x86. Drivers that have been made to work on other architectures
> > such as Alpha and PPC tend to have had such bugs beaten out of
> > them, but I guess sata_nv isn't in that category. 
> > 
> > My guess would be that there's some code in the driver that is
> > taking liberties with treating physical and bus addresses as the
> > same. If you can add some tracing to the driver to narrow things
> > down we may be able to help you.
> I have very similar problem with sata_via (SCSI) driver.
> Can you give me pointers to track down the problem ?
> Cédric

Perhaps a starting point would be to compare the start-of-day driver
messages from booting native Linux compared with booting
XenLinux. Also, after booting native Linux, take a look at the output
of 'cat /proc/interrupts' and see what IRQ# is allocated to teh SATA

 -- Keir

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