On Mon, Feb 1, 2016 at 3:00 AM, Wei Liu <wei.l...@citrix.com> wrote:
> Nice work, Andy.
>
> On Thu, Jan 28, 2016 at 06:31:13PM -0800, Andy Lutomirski wrote:
>> This switches virtio to use the DMA API on Xen and if requested by
>> module option.
>>
>> This fixes virtio on Xen, and it should break anything because it's
>> off by default on everything except Xen PV on x86.
>>
>
> What is your setup? My understanding is that virtio doesn't work on PV
> guest as of now because a suitable transport is missing.

I cheated and ran Xen under KVM with the virtio-pci device provided by
QEMU.   If you have virtme
(https://git.kernel.org/cgit/utils/kernel/virtme/virtme.git/), you can
do:

virtme-run --kdir=. --pwd --xen xen-4.5.2 --qemu-opts -smp 3 -m 1024

where xen-4.5.2 is the gunzipped Xen binary.  (Other versions work, too.)

--Andy

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