Re: [Xen-devel] pvops: AHCI problems with SB600

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Tue, Sep 22, 2009 at 10:08:25AM -0400, Konrad Rzeszutek Wilk wrote:
> On Tue, Sep 22, 2009 at 11:00:23AM +0200, Patrick Scharrenberg wrote:
> > Konrad Rzeszutek Wilk wrote:
> > > Ooooh. Can you give some more details on the hardware flavor? CPU? Memory?
> > Its an AMD system on an ASUS M2A-VM mainboard with an Athlon 64 X2 CPU
> > and 8GB of memory.
> > 
> > > What happens if you use dom0_mem=max:512MB or pass in 'irqpoll' to the
> > > Linux kernel?
> > irqpoll does not change anything but the memory limit does the trick.
> > The system then boots fine, I attached the dmesg log.
> 
> Patrick,
> 
> Lets try a couple of more options, if this isn't too much of a trouble?
> Mainly change the dom0_mem=max:512MB to dom0_mem=max:4GB and then 
> dom0_mem=max:6GB.
> 
> You ought to have no trouble at 4GB. 6GB will fail if this is a DMA related
> issue.

Patrick,

I've gotten my hands on machine with SB700 and it exhibits similar problems. 
The 
SB700 AHCI controller stops working if I have more than 4GB in the machine.

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