Re: [PATCH 0/3] util/userfaultfd: Support /dev/userfaultfd

[Peter Xu]

On Wed, Feb 01, 2023 at 08:55:01AM +0100, Michal Prívozník wrote:
> On 1/31/23 22:01, Peter Xu wrote:
> > I'll wait 1-2 more days to see whether Michal has anything to comment.
> 
> Yeah, we can go with your patches and leave FD passing for future work.
> It's orthogonal after all.
> 
> In the end we can have (in the order of precedence):
> 
> 1) new cmd line argument, say:
> 
>    qemu-system-x86_64 -userfaultfd fd=5 # where FD 5 is passed by
> libvirt when exec()-ing qemu, just like other FDs, e.g. -chardev
> socket,fd=XXX
> 
> 2) your patches, where qemu opens /dev/userfaultfd
> 
> 3) current behavior, userfaultfd syscall

Sounds good.  Thanks.

-- 
Peter Xu