Re: [Xen-devel] [xen-unstable] Commit 2ca9fbd739b8a72b16dd790d0fff7b75f5488fb8 AMD IOMMU: allocate IRTE entries instead of using a static mapping, makes dom0 boot process stall several times.

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 15.08.13 at 16:43, Sander Eikelenboom <linux@xxxxxxxxxxxxxx> wrote:
> Well apart from the dom0 boot stalls, everthing is working fine after the 
> system is booted, including the passthrough of 4 pci(e) devices.
> From closer inspection it seems to be when enabling the sata controller and 
> the NICs during dom0 boot.
> The question is why it stalls, and why it seems to resume when pressing any 
> key on the console.

Once the system is up, can you check whether a sane amount of
interrupts is arriving for SATA controller and NIC? The stalls could
certainly be a result of there being interrupts missing the driver
expects, potentially causing it to fall back to some polling mode.

Jan


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