linux-kernel - Kernel 2.6.20 does not work anymore with SCSI or SATA on old Opteron / Xeon servers

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Date:	Sun, 18 Mar 2007 21:50:46 +0100
From:	Stefan Priebe <stefan@...e.be>
To:	linux-kernel@...r.kernel.org
Subject: Kernel 2.6.20 does not work anymore with SCSI or SATA on old Opteron
 / Xeon servers

Hello!

We've a very strange Problem with Kernel 2.6.20.x

If i try to access a SCSI or SATA Disk (tested with Adaptec U320 
ASC-29320, ICP Vortex 9024, Promise TX300) the whole server hangs - no 
output - no error on the screen - but it hangs completely. But it does 
not happen on all our systems affected are only old 604pin xeons and 
socket 940 Opterons. Socket F Opteron or 771 Xeons does work fine.

I've also testet apci=off pci=routeirq but both does not help. The 
systems work fine with 2.6.19.x and before.

Stefan
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