Re: [PATCH v2 04/10] iommu/arm-smmu-v3: Allocate IOTLB cache tag if no id to reuse
From: Jason Gunthorpe <jgg@nvidia.com>
Date: 2026-01-26 21:06:45
Also in:
linux-iommu, linux-patches, lkml
On Wed, Jan 21, 2026 at 05:24:22PM -0800, Nicolin Chen wrote:
quoted hunk ↗ jump to hunk
@@ -3220,6 +3241,9 @@ arm_smmu_master_build_inv(struct arm_smmu_master *master, break; } + /* Set a default users counter */ + refcount_set(&cur->users, 1);
I think abusing users here is a little too hard to read.. Can we just keep track in the state somehow with a flag? Or maybe union in a "bool needs_free" that is for the on-stack version of this structure? Jason