2 Commits

Author	SHA1	Message	Date
Jiri Denemark	558f00397a	qemu: Ignore missing vm.unprivileged_userfaultfd sysctl ... Older kernels did not support this sysctl, but they did not restrict userfaultfd in any way so everything worked as if vm.unprivileged_userfaultfd was set to 1. Thus we can safely ignore errors when setting the value. Signed-off-by: Jiri Denemark <jdenemar@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>	2022-02-09 13:03:33 +01:00
Jiri Denemark	d804408ef9	qemu: Enable unprivileged userfaultfd for post-copy migration ... Userfaultfd is by default allowed only for privileged processes. Since libvirt runs QEMU unprivileged, we need to enable unprivileged access to userfaultfd to enable post-copy migration. https://bugzilla.redhat.com/show_bug.cgi?id=1945420 Signed-off-by: Jiri Denemark <jdenemar@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>	2021-12-10 17:53:11 +01:00