Re: [libvirt] [PATCH] qemuDomainAttachHostPciDevice: Fall back to mem balloon if there's no hard_limit

If there's no hard_limit set and domain uses VFIO we still must lock the guest memory (prerequisite from qemu). Hence, we should compute the amount to be locked from max_balloon. Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com&gt; --- src/qemu/qemu_hotplug.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)

@@ -1032,8 +1034,9 @@ int qemuDomainAttachHostPciDevice(virQEMUDriverPtr driver, * doesn't hurt to "change" the limit to the same value. */ vm->def->hostdevs[vm->def->nhostdevs++] = hostdev; - virProcessSetMaxMemLock(vm->pid, - vm->def->mem.hard_limit * 1024); + memKB = def->mem.hard_limit ? + def->mem.hard_limit : def->mem.max_balloon + 1024 * 1024;