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
