Re: [PATCH v3 3/5] iommu: Add iommu_get_domain_for_dev_locked() helper

[Baolu Lu <baolu.lu@xxxxxxxxxxxxxxx>]

On 8/18/25 22:40, Jason Gunthorpe wrote:
> On Fri, Aug 15, 2025 at 01:28:02PM +0800, Baolu Lu wrote:
>
> > Given that iommu_group->mutex is transparent to the iommu driver, how
> > about
> It is not actually transparent, alot of drivers are implicitly
> assuming that the core single threads their struct device for alot of
> the ops callbacks and we exposed the lockdep test to the drivers to
> help the document this.

Fair enough. It's the role of iommu_group_mutex_assert().

Thanks,
baolu