On Wed, 9 Sep 2020 14:46:00 +0200 Erik Skultety <eskultet@xxxxxxxxxx> wrote: > > > > Are ^these attributes documented a little more somewhere? I didn't find those > > > > in [1]. I suppose it is available in the z/Architecture: Principles of > > > > [BTW: what are [1] and [2] referring to?] > > Urgh...not again... > [1] https://www.ibm.com/support/knowledgecenter/zosbasics/com.ibm.zos.znetwork/znetwork_59.htm > [2] https://www.kernel.org/doc/html/latest/driver-api/s390-drivers.html TBH, I'm not sure how useful [2] is; it's mostly a vehicle for pulling in kerneldoc documentation of structs and functions. There's also https://www.kernel.org/doc/html/latest/s390/driver-model.html, not sure if that is helpful. > > Sorry... > > > > > > > Operation publication for which I'd have to get an IBM account. > > > > > > > > > > Here's a freely available version of the PoP: > > > > > > https://www.ibm.com/support/pages/sites/default/files/inline-files/690450_SA22-7832-03.pdf > > > > > > I/O is described in chapter 13. > > > > Let me also point to a series of articles I did on my blog: > > https://virtualpenguins.blogspot.com/2017/02/channel-io-demystified.html > > Thanks, I've looked at both, it's still fairly cloudy though. Let me know if I can do anything to make it clearer. This channel I/O stuff probably can be a bit daunting...