Re: [Xen-devel] Re: pv_ops dom0 USB fixed

[Gerd Hoffmann <kraxel@xxxxxxxxxx>]

Jeremy Fitzhardinge wrote:
>> Intel 64bit box, 6GB RAM (dom0_mem=2g), running rawhide.
> 
> OK, that's interesting.  The symptom is the same (drive stops talking),
> but after a while rather than immediate.

Yep.

> That suggests there might be
> some issue with what memory gets allocated or something?

Or translated.  Maybe it grooks due to being fed with an invalid bus
address where it can't DMA do.

> Does putting the controller in IDE/legacy mode work OK?

Didn't try, and can't easily because it is a headless box sitting in the
corner.  Speaking of memory:  IIRC ahci can do 64bit DMA, which legacy
IDE can't.  Maybe that makes AHCI trigger the bug while it doesn't
happen with IDE?

> Oooh, sound.  Does it work?

Dunno.  No speakers connected, and I don't have some offhand.

> What are all the libvirtd/qemu-dm crashes?  Are they pertinent?

Oh, that are some qemu-xen.latest testruns.  Trying to run hvm domains
crashes it.  Didn't investigate yet why.  Could be that it simply
depends on changes in xen-unstable and can't work as drop-in replacement
for the xen-3.3 qemu-dm version.

cheers,
  Gerd

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