On Wed, Sep 09, 2020 at 03:01:50PM +0200, Cornelia Huck wrote: > 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 It wasn't, but it was the only resource mentioning something about the ccw bus which was clearly relevant to patch 2/5 (udevProcessCSS). > 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... Sure, you could shed a bit more light on this one: https://www.redhat.com/archives/libvir-list/2020-September/msg00492.html Erik