Re: [PATCH v9 3/7] iommu/arm-smmu-v3: Introduce a per-domain arm_smmu_invs array
From: Jason Gunthorpe <jgg@nvidia.com>
Date: 2026-01-26 15:22:03
Also in:
linux-iommu, lkml
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