On Fri, 25 Jan 2019 15:01:01 +0100 Halil Pasic <pa...@linux.ibm.com> wrote:
> On Fri, 25 Jan 2019 13:58:35 +0100 > Cornelia Huck <coh...@redhat.com> wrote: > > - We currently do not want the user space to submit another channel > > program while the first one is still in flight. As submitting another > > one is a valid request, however, we should allow this in the future > > (once we have the code to handle that in place). > > I don't agree. There is at most one channel program processed by a > subchannel at any time. I would prefer an early error code if channel > programs are issued on top of each other (our virtual subchannel > is channel pending or FC start function bit set or similar). You can submit a new request if the subchannel is pending with primary, but not with secondary state. Regardless of that, I think it is much easier to push as much as possible of sorting out of requests to the hardware.
