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

[Nicolin Chen]

On Fri, Aug 15, 2025 at 01:28:02PM +0800, Baolu Lu wrote:
> On 8/12/25 06:59, Nicolin Chen wrote:
> Given that iommu_group->mutex is transparent to the iommu driver, how
> about
> 
> /*
>  * Called only by iommu drivers in the callback context where
>  * group->mutex has already been held by the core.
>  */
> struct iommu_domain *iommu_get_domain_for_dev_internal(struct device *dev)
> {
> 	...
> 	lockdep_assert_held(&group->mutex);
> 	...
> }

I thought about the "_internal" tag, but didn't pick that because
we seem to use that for an internal function inside iommu.c?

I don't have a problem using that though, as it can be noted like
like your writing.

Thanks
Nicolin