Re: [PATCH v9 3/7] iommu/arm-smmu-v3: Introduce a per-domain arm_smmu_invs array

Jason Gunthorpe
2026-01-26T15:22:03Z

On Mon, Jan 26, 2026 at 02:54:38PM +0000, Will Deacon wrote:
> There's the usual scary ordering worries with this stuff, but they exist
> with refcount_read() too. We're ok because cur->users is address dependent
> on the read of the invalidation array pointer, which is RCU protected.
>
> (I think!)

This has been my understanding at least :\

Jason