Re: [PATCH v2] s390x/css: Selectively copy sense data to IRB

2021-06-14 Thread Eric Farman
On Mon, 2021-06-14 at 13:15 +0200, Cornelia Huck wrote: > On Fri, Jun 11 2021, Eric Farman wrote: > > > The SCHIB.PMCW.CSENSE bit is used to determine whether the > > IRB should be set up with sense data, but that bit only > > indicates whether sense data is requested, not if it was > > provided

Re: [PATCH v2] s390x/css: Selectively copy sense data to IRB

2021-06-14 Thread Cornelia Huck
On Fri, Jun 11 2021, Eric Farman wrote: > The SCHIB.PMCW.CSENSE bit is used to determine whether the > IRB should be set up with sense data, but that bit only > indicates whether sense data is requested, not if it was > provided by the device. For virtual devices, this is fine. > > For passthroug

[PATCH v2] s390x/css: Selectively copy sense data to IRB

2021-06-11 Thread Eric Farman
The SCHIB.PMCW.CSENSE bit is used to determine whether the IRB should be set up with sense data, but that bit only indicates whether sense data is requested, not if it was provided by the device. For virtual devices, this is fine. For passthrough devices, hardware would present sense data in IRB.E