On 13/09/2019 09.20, Cornelia Huck wrote: > On Thu, 12 Sep 2019 13:23:38 +0200 > Thomas Huth <thuth@xxxxxxxxxx> wrote: > >> Hmm, we already talked about deprecating support for pre-3.15 kernel >> stuff in the past (see >> https://wiki.qemu.org/ChangeLog/2.12#Future_incompatible_changes for >> example), > > Btw: did we ever do that? I don't quite recall what code we were > talking about... We never really did - but we also never fixed the issue: If you run the current QEMU on a kernel before 3.15, it refuses to work due to the missing in-kernel FLIC device: Initialization of device s390-flic-kvm failed: KVM is missing capability KVM_CAP_DEVICE_CTR Since nobody really complained so far that running QEMU with KVM is still required on a kernel < 3.15, I think we could make this also "official" now and improve the error message a little bit, pointing the user to a kernel >= 3.15. Thomas
