Re: [PATCH v5 00/15] iommu/arm-smmu-v3: Add PRI support

[Will Deacon]

On Tue, 15 Sep 2026 09:38:12 -0700, Nicolin Chen wrote:
> The SMMUv3 driver doesn't handle events on the PRI queue or respond to IOPF
> faults. This series adds the missing pieces, using the IOPF infrastructure,
> to convert PRI page requests into iopf_faults and issue CMDQ_OP_PRI_RESP.
> 
> The iopf_queue_flush_dev() contract requires the driver to first drain the
> hardware PRI queue and synchronize using a threaded IRQ handler before the
> IOPF software flush. This drove the additional commits compared to v1:
>  - arm_smmu_wait_for_queue_drained() drains the hardware queue by counting
>    the entries that the threaded IRQ handler consumes
>  - arm_smmu_attach_release() moves the teardown outside the global lock
>  - synchronize_irq() closes the gap before the final flush
> 
> [...]

Applied first three to iommu (arm/smmu/updates), thanks!

[01/15] iommu/arm-smmu-v3: Disable the impl before disabling the SMMU on shutdown
        https://git.kernel.org/iommu/c/ab0dbf411ace
[02/15] iommu/arm-smmu-v3: Add arm_smmu_attach_release()
        https://git.kernel.org/iommu/c/580bbfcdcd2e
[03/15] iommu/arm-smmu-v3: Add Q_POS() macro
        https://git.kernel.org/iommu/c/02b5c4639bcd

Cheers,
-- 
Will

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