Re: [RFC PATCH v1 3/8] iommu/arm-smmu-v3-sva: Allocate new ASID from installed_smmus

Jason Gunthorpe
2023-08-17T18:39:11Z

On Fri, Aug 18, 2023 at 02:16:25AM +0800, Michael Shavit wrote:
> Pick an ASID that is within the supported range of all SMMUs that the
> domain is installed to.
>
> Signed-off-by: Michael Shavit <mshavit@google.com>
> ---

This seems like a pretty niche scenario, maybe we should just keep a
global for the max ASID?

Otherwise we need a code to change the ASID, even for non-SVA domains,
when the domain is installed in different devices if the current ASID
is over the instance max..

Ideally domain ASID would be selected at domain allocation time.

Jason