Re: [PATCH] target/s390x/kvm: Enable adapter interruption suppression again

[Cornelia Huck <cohuck@redhat.com>]

On Thu, 16 Jan 2020 14:22:15 +0100
Christian Borntraeger <borntraeger@de.ibm.com> wrote:

> On 16.01.20 13:55, Thomas Huth wrote:
> > On 16/01/2020 13.50, Cornelia Huck wrote:  
> >> On Thu, 16 Jan 2020 13:20:26 +0100
> >> Thomas Huth <thuth@redhat.com> wrote:
> >>  
> >>> The AIS feature has been disabled late in the v2.10 development
> >>> cycle since there were some issues with migration (see commit
> >>> 3f2d07b3b01ea61126b - "s390x/ais: for 2.10 stable: disable ais
> >>> facility"). We originally wanted to enable it again for newer
> >>> machine types, but apparently we forgot to do this so far. Let's
> >>> do it for the new s390-ccw-virtio-5.0 machine now.
> >>>
> >>> Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1756946
> >>> Signed-off-by: Thomas Huth <thuth@redhat.com>
> >>> ---
> >>>  hw/s390x/s390-virtio-ccw.c         |  4 ++++
> >>>  include/hw/s390x/s390-virtio-ccw.h |  4 ++++
> >>>  target/s390x/kvm.c                 | 11 ++++++++---
> >>>  3 files changed, 16 insertions(+), 3 deletions(-)
> >>>  
> >>  
> >>> @@ -365,10 +367,13 @@ int kvm_arch_init(MachineState *ms, KVMState *s)
> >>>      /*
> >>>       * The migration interface for ais was introduced with kernel 4.13
> >>>       * but the capability itself had been active since 4.12. As migration
> >>> -     * support is considered necessary let's disable ais in the 2.10
> >>> -     * machine.
> >>> +     * support is considered necessary we only enable this for newer  
> >>
> >> s/necessary we only enable this/necessary, we only try to enable this/
> >>  
> >>> +     * machine types and if KVM_CAP_S390_AIS_MIGRATION is available.  
> >>
> >> maybe s/and if/if/  
> > 
> > Sure ... could you fix it up when picking up the patch (in case I don't
> > have to respin), or do you want me to send a v2?

Sure, can do that.