Re: [virtio-dev] Dirty Page Tracking (DPT)

From
Rob Miller <>
Date
2020-04-07T10:40:47+00:00
ID
CAJPjb1KijQN39gC=
Thread
Re: [virtio-dev] Dirty Page Tracking (DPT)
another question on vDPA vs vendor specific driver portion...

Are the subsystem vendor & device IDs to be different from the primary (Red Hat) versions as there has to be a way for a vendor specific driver to "see" its device.

Rob Miller


(919)721-3339

On Tue, Apr 7, 2020 at 5:53 AM Eugenio Perez Martin <> wrote:

Hi!

So, from the previous mails, it seems that monitoring the used ring

(and the packed descriptors) is a good first step in that direction,

as DPDK did. This way, the device does not need to worry about the

dirty page tracking using a bitmap and the PCI writes limitation, and

we can evaluate later the proposed alternatives:

* Alternate used descriptors in packed.

* vDPA interface for vDPA devices in a convenient format.

Any thoughts? Do you think that we should start with another way?

Thanks!