Re: [PATCH v7 7/8] AMD/IOMMU: add "ivmd=" command line option

2021-08-26 Thread Jan Beulich
On 26.08.2021 16:08, Andrew Cooper wrote: > On 26/08/2021 08:25, Jan Beulich wrote: >> @@ -1523,6 +1523,31 @@ _dom0-iommu=map-inclusive_ - using both >> > `= ` >> >> ### irq_vector_map (x86) >> + >> +### ivmd (x86) >> +> `= >> [-][=[-][,[-][,...]]][;...]` >> + >> +Define IVMD-like ranges that

Re: [PATCH v7 7/8] AMD/IOMMU: add "ivmd=" command line option

2021-08-26 Thread Andrew Cooper
On 26/08/2021 08:25, Jan Beulich wrote: > Just like VT-d's "rmrr=" it can be used to cover for firmware omissions. > Since systems surfacing IVMDs seem to be rare, it is also meant to allow > testing of the involved code. > > Only the IVMD flavors actually understood by the IVMD parsing logic can >

[PATCH v7 7/8] AMD/IOMMU: add "ivmd=" command line option

2021-08-26 Thread Jan Beulich
Just like VT-d's "rmrr=" it can be used to cover for firmware omissions. Since systems surfacing IVMDs seem to be rare, it is also meant to allow testing of the involved code. Only the IVMD flavors actually understood by the IVMD parsing logic can be generated, and for this initial implementation