Re: [Xen-devel] [PATCH] amd iommu: Dump flags of IO page faults

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 07.09.12 at 12:15, Sander Eikelenboom <linux@xxxxxxxxxxxxxx> wrote:
>> No, it just can't report faults (they would need to be polled for).
>> Also, saying "in the 4.1 case" is wrong here - this really depends
>> on whether you have an affected Dom0 kernel. Things work fine
>> if the Dom0 kernel doesn't trample over Xen's setup.
> 
> Except for the IO PAGE FAULT in xl dmesg, which is reported before the 
> kernel even gets loaded with xen-4.2.
> I don't see that one on 4.1 either, so that wouldn't add up to it being a 
> dom0 kernel problem only ...

Oh, yes, that certainly is a hypervisor only bug (if a bug
under our control at all - as said before, a babbling device
- eg left active by BIOS - is likely beyond our control).

Jan


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