Re: [PATCH 5/5] ioeventfd: Introduce KVM_IOEVENTFD_FLAG_SOCKET

Avi Kivity
2011-07-13T12:57:18Z

On 07/13/2011 11:02 AM, Pekka Enberg wrote:
> On Wed, Jul 13, 2011 at 10:07 AM, Avi Kivity<avi@redhat.com> wrote:
> > - the writes are such high frequency that we gain something from the
> > queueing is happens when we thread work. That's where the gain for serial
> > console can come from - though it would be better to just use virtio-serial
> > instead.
>
> We'd like to keep 8250 emulation because it's the most robust method
> for getting data out of the kernel when there's problems. It's also
> compatible with earlyprintk and such.

What do you hope to gain from the optimization? 100ms less boot time?

btw, it likely needs read support, if any read can depend on a previous
write.

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