Re: [Qemu-devel] [PATCH v4 1/1] vhost user: add support of live migration

[Marc-André Lureau]

Hi

On Fri, Jul 17, 2015 at 2:57 PM, Paolo Bonzini <address@hidden> wrote:
> LOG_FD is implemented in the kernel drivers/vhost/vhost.c.  It seems to
> be an eventfd-like mechanism to save on dirty bitmap scans.  However,
> it's not well documented how to implement it in a correct way.

and it's not used by qemu, so hard to say if it actually work well.

> In any case, live migration needs a new message type (like LOG_MMAP_FD)
> in the vhost-user protocol.

Yes, perhaps with size and offset. I am looking at this.


-- 
Marc-André Lureau