Re: meaning and use of IOMMU_FLUSHF_added

2021-08-19 Thread Jan Beulich
On 18.08.2021 16:15, Paul Durrant wrote: > On 18/08/2021 13:09, Jan Beulich wrote: >> On 18.08.2021 12:51, Jan Beulich wrote: >>> back at the time I did already question your intended meaning of >>> this flag. I notice that there's presently no consumer of it being >>> set (apart from yielding non-

Re: meaning and use of IOMMU_FLUSHF_added

2021-08-18 Thread Paul Durrant
On 18/08/2021 13:09, Jan Beulich wrote: On 18.08.2021 12:51, Jan Beulich wrote: Paul, back at the time I did already question your intended meaning of this flag. I notice that there's presently no consumer of it being set (apart from yielding non-zero flush_flags). I'm afraid this model makes a

Re: meaning and use of IOMMU_FLUSHF_added

2021-08-18 Thread Jan Beulich
On 18.08.2021 12:51, Jan Beulich wrote: > Paul, > > back at the time I did already question your intended meaning of > this flag. I notice that there's presently no consumer of it being > set (apart from yielding non-zero flush_flags). I'm afraid this > model makes accumulation of flush flags not

meaning and use of IOMMU_FLUSHF_added

2021-08-18 Thread Jan Beulich
Paul, back at the time I did already question your intended meaning of this flag. I notice that there's presently no consumer of it being set (apart from yielding non-zero flush_flags). I'm afraid this model makes accumulation of flush flags not work properly: With both flags set and more than a s