On Wed, 15 Mar 2017 14:29:13 -0400 Luiz Capitulino <lcapitulino@xxxxxxxxxx> wrote: > > ... we could consider <locked/> to be the explicit request for > > setting an infinite memory locking limit and letting users set a lower > > limit with hard_limit if they want. > > That's exactly how I see it! It seems we're total agreement. > > Now, something has just occurred to me: shouldn't VFIO have > the same problem? It's the same hard limit that's set. I took a look at this today. While it's the same mlock limit that's set and while QEMU's allocations can surpass that limit, I didn't get a crash when using VFIO. The most probable obvious reason for this is that VFIO is probably mlocking a small region, although I could not find where this is done in QEMU. In that case, VFIO is not affected. This issue is specific to <locked/>, where the 1GB limit set by libvirt conflicts with QEMU memory needs. -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list
