[virtio-dev] Re: [virtio-comment] [PATCH 5/5] virtio-pci: implement VIRTIO_F_QUEUE_STATE

Jason Wang <[email protected]>
Newsgroups dev.linux.lists.virtio-dev,dev.linux.lists.virtio-comment
Message-ID <CACGkMEv+wNhGMQSc819JFW1n6Ae08QZV1=rDZdZsbDd7ExH3ww@mail.gmail.com> 
On Wed, Sep 13, 2023 at 4:28 PM Michael S. Tsirkin <[email protected]> wrote:
>
> On Wed, Sep 13, 2023 at 12:45:21PM +0800, Jason Wang wrote:
> > For example, KVM doesn't use
> > hardware to log dirty pages.
>
> It uses a mix of PML, PTE bit and EPT write protection.

Well EPT/PML is Intel specific, the minimal requirement is page fault.
The logging is done by software anyhow.

Virtio can choose to go device page fault for sure.

Thanks

>
> --
> MST
>


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