On 05/22/2018 04:19 PM, Peter Maydell wrote: > On 22 May 2018 at 15:11, Auger Eric <eric.au...@redhat.com> wrote: >> Hi Peter, >> >> On 05/22/2018 03:22 PM, Peter Maydell wrote: >>> How many substream IDs do we expect to see in practice? >> >> Spec says max 20 bits, matching the max size of the PASID > > Right, but do we actually expect to see transactions from > devices that use the whole 2^20 possible values, or will > they in practice mostly use 1..5, or somethnig else?
An example given in the spec mentions 8. "An example would be a compute accelerator with 8 contexts that might each map to a different user process, but where the single device has common configuration meaning it must be assigned to a VM whole." Thanks Eric > > thanks > -- PMM >
