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RE: [Xen-devel] SATA detect fails on ICH7 chipset / DellPoweredgeSC430

To: "Chris Bainbridge" <chris.bainbridge@xxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-devel] SATA detect fails on ICH7 chipset / DellPoweredgeSC430
From: "Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>
Date: Wed, 31 Aug 2005 16:01:38 +0100
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Thread-index: AcWuNI99EJuC7QspRVuLjBmsGaDvAAAB5grQ
Thread-topic: [Xen-devel] SATA detect fails on ICH7 chipset / DellPoweredgeSC430
> This one is different, but like you said sata failing seems 
> to be a symptom and not the cause:

OK, this is actually quite a different controller from the one I have.
> 0000:00:1f.2 IDE interface: Intel Corporation 82801GB/GR/GH (ICH7
> Family) Serial ATA Storage Controllers cc=IDE (rev 01) 
> (prog-if 8f [Master SecP SecO PriP PriO])
>         Subsystem: Dell: Unknown device 01ae
>         Flags: bus master, 66Mhz, medium devsel, latency 0, IRQ 20
>         I/O ports at fe00 [size=8]
>         I/O ports at fe10 [size=4]
>         I/O ports at fe20 [size=8]
>         I/O ports at fe30 [size=4]
>         I/O ports at fea0 [size=16]
>         Memory at 40000000 (32-bit, non-prefetchable) [size=1K]

0x40000000 ??? That's bizzare. That's 1GB. I'd normally expect to see
something starting '0xff'.

How much memory has the machine got?

Please can you post the e820 map.

>         Capabilities: [70] Power Management version 2
> I just noticed the hypervisor leaves a message on the screen:
> (XEN) *** Serial input -> DOM0 (type 'CTRL-a' three times to 
> switch input to Xen).
> (XEN) (file=.../xen-unstable/xen/include/asm/mm.h, line=201) Error pfn
> 6000: rd=ffbfb080, od=00000000, caf=00000000, taf=0000000c
> (XEN) Domain 0 shutdown: rebooting machine

This is a failed attempt to access a page at 96MB. It's almost certainly

Please can you add a show_guest_stack() right after thr printf in mm.h
line 201.


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