From: Will Deacon <will@kernel.org>
To: robin.murphy@arm.com,
Jonathan Cameron <jonathan.cameron@oss.qualcomm.com>,
Jason Gunthorpe <jgg@ziepe.ca>,
Nicolin Chen <nicolinc@nvidia.com>
Cc: catalin.marinas@arm.com, mark.rutland@arm.com,
kernel-team@android.com, Will Deacon <will@kernel.org>,
joro@8bytes.org, bhelgaas@google.com, praan@google.com,
kevin.tian@intel.com, kees@kernel.org, smostafa@google.com,
baolu.lu@linux.intel.com, Jean-Philippe Brucker <jpb@kernel.org>,
Eric Auger <eric.auger@redhat.com>,
linux-arm-kernel@lists.infradead.org, iommu@lists.linux.dev,
linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org,
skaestle@nvidia.com, mmarrid@nvidia.com, skolothumtho@nvidia.com,
bbiber@nvidia.com, harsha.v@oss.qualcomm.com
Subject: Re: [PATCH v5 00/15] iommu/arm-smmu-v3: Add PRI support
Date: Sun, 4 Oct 2026 17:50:42 +0100 [thread overview]
Message-ID: <179112969067.2365011.2400275632382171863.b4-ty@kernel.org> (raw)
In-Reply-To: <cover.1789446520.git.nicolinc@nvidia.com>
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
https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev
prev parent reply other threads:[~2026-10-04 16:50 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-15 16:38 Nicolin Chen
2026-09-15 16:38 ` [PATCH v5 01/15] iommu/arm-smmu-v3: Disable the impl before disabling the SMMU on shutdown Nicolin Chen
2026-09-23 18:37 ` Jason Gunthorpe
2026-09-15 16:38 ` [PATCH v5 02/15] iommu/arm-smmu-v3: Add arm_smmu_attach_release() Nicolin Chen
2026-09-23 18:37 ` Jason Gunthorpe
2026-09-15 16:38 ` [PATCH v5 03/15] iommu/arm-smmu-v3: Add Q_POS() macro Nicolin Chen
2026-09-15 23:19 ` Jonathan Cameron
2026-09-15 16:38 ` [PATCH v5 04/15] iommu/arm-smmu-v3: Drain in-flight fault events on domain detach Nicolin Chen
2026-09-23 18:37 ` Jason Gunthorpe
2026-09-23 22:33 ` Nicolin Chen
2026-09-23 23:39 ` Jason Gunthorpe
2026-09-24 1:42 ` Nicolin Chen
2026-09-24 14:03 ` Jason Gunthorpe
2026-09-28 22:29 ` Nicolin Chen
2026-09-29 19:46 ` Nicolin Chen
2026-09-15 16:38 ` [PATCH v5 05/15] iommu/arm-smmu-v3: Flush in-flight fault work " Nicolin Chen
2026-09-23 18:37 ` Jason Gunthorpe
2026-09-15 16:38 ` [PATCH v5 06/15] iommu/arm-smmu-v3: Allocate IOPF queue without FEAT_SVA Nicolin Chen
2026-09-23 18:37 ` Jason Gunthorpe
2026-09-15 16:38 ` [PATCH v5 07/15] iommu/arm-smmu-v3: Submit CMDQ_OP_PRI_RESP for IOPF event Nicolin Chen
2026-09-23 18:37 ` Jason Gunthorpe
2026-09-15 16:38 ` [PATCH v5 08/15] iommu/arm-smmu-v3: Disable the queue IRQs before disabling the SMMU Nicolin Chen
2026-09-15 23:21 ` Jonathan Cameron
2026-09-23 18:37 ` Jason Gunthorpe
2026-09-24 1:12 ` Nicolin Chen
2026-09-15 16:38 ` [PATCH v5 09/15] iommu/arm-smmu-v3: Disable PRI when no IRQ handler is registered Nicolin Chen
2026-09-23 18:37 ` Jason Gunthorpe
2026-09-15 16:38 ` [PATCH v5 10/15] iommu/arm-smmu-v3: Support PRI Page Request in arm_smmu_handle_ppr() Nicolin Chen
2026-09-15 23:22 ` Jonathan Cameron
2026-09-23 18:37 ` Jason Gunthorpe
2026-09-15 16:38 ` [PATCH v5 11/15] iommu/arm-smmu-v3: Discard partial PRI faults on PRIQ overflow Nicolin Chen
2026-09-23 18:37 ` Jason Gunthorpe
2026-09-15 16:38 ` [PATCH v5 12/15] iommu/arm-smmu-v3: Allocate IOPF queue for ARM_SMMU_FEAT_PRI Nicolin Chen
2026-09-23 18:37 ` Jason Gunthorpe
2026-09-15 16:38 ` [PATCH v5 13/15] PCI/ATS: Add PRI stubs Nicolin Chen
2026-09-23 18:37 ` Jason Gunthorpe
2026-09-15 16:38 ` [PATCH v5 14/15] PCI/ATS: Export pci_enable_pri() and pci_reset_pri() Nicolin Chen
2026-09-23 18:37 ` Jason Gunthorpe
2026-09-15 16:38 ` [PATCH v5 15/15] iommu/arm-smmu-v3: Enable PRI for PCI device in arm_smmu_probe_device() Nicolin Chen
2026-10-04 16:50 ` Will Deacon [this message]
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