From: Nicolin Chen <nicolinc@nvidia.com>
To: <will@kernel.org>, <robin.murphy@arm.com>, <jgg@nvidia.com>
Cc: <joro@8bytes.org>, <bhelgaas@google.com>, <praan@google.com>,
<kevin.tian@intel.com>, <kees@kernel.org>, <smostafa@google.com>,
<baolu.lu@linux.intel.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: [PATCH v3 10/13] iommu/arm-smmu-v3: Allocate IOPF queue for ARM_SMMU_FEAT_PRI
Date: Mon, 31 Aug 2026 17:33:35 -0700 [thread overview]
Message-ID: <37a4e140ae26b1f58a08b9274937dcc9fa1e5e57.1788222486.git.nicolinc@nvidia.com> (raw)
In-Reply-To: <cover.1788222485.git.nicolinc@nvidia.com>
After the previous change drops the FEAT_SVA gate, arm_smmu_init_queues()
allocates smmu->evtq.iopf when the SMMU advertises FEAT_STALLS. PRI support
is being added on top of the IOPF infrastructure, so extend the allocation
condition to cover SMMUs that advertise FEAT_PRI without FEAT_STALLS.
Assisted-by: Claude:claude-opus-4-8
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
---
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
index 502b5c7673bc9..47c95b691503b 100644
--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
@@ -4741,7 +4741,7 @@ static int arm_smmu_init_queues(struct arm_smmu_device *smmu)
if (ret)
return ret;
- if (smmu->features & ARM_SMMU_FEAT_STALLS) {
+ if (smmu->features & (ARM_SMMU_FEAT_STALLS | ARM_SMMU_FEAT_PRI)) {
smmu->evtq.iopf = iopf_queue_alloc(dev_name(smmu->dev));
if (!smmu->evtq.iopf)
return -ENOMEM;
--
2.43.0
next prev parent reply other threads:[~2026-09-01 0:34 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-01 0:33 [PATCH v3 00/13] iommu/arm-smmu-v3: Add PRI support Nicolin Chen
2026-09-01 0:33 ` [PATCH v3 01/13] iommu/arm-smmu-v3: Add arm_smmu_attach_release() Nicolin Chen
2026-09-03 19:18 ` Jonathan Cameron
2026-09-04 20:16 ` Nicolin Chen
2026-09-01 0:33 ` [PATCH v3 02/13] iommu/arm-smmu-v3: Add Q_POS() macro Nicolin Chen
2026-09-01 0:33 ` [PATCH v3 03/13] iommu/arm-smmu-v3: Drain in-flight fault events on domain detach Nicolin Chen
2026-09-03 19:18 ` Jonathan Cameron
2026-09-04 14:09 ` Jason Gunthorpe
2026-09-04 22:57 ` Nicolin Chen
2026-09-08 16:36 ` Jason Gunthorpe
2026-09-08 21:01 ` Nicolin Chen
2026-09-04 21:42 ` Nicolin Chen
2026-09-01 0:33 ` [PATCH v3 04/13] iommu/arm-smmu-v3: Flush in-flight fault work " Nicolin Chen
2026-09-03 19:18 ` Jonathan Cameron
2026-09-05 0:54 ` Nicolin Chen
2026-09-01 0:33 ` [PATCH v3 05/13] iommu/arm-smmu-v3: Allocate IOPF queue without FEAT_SVA Nicolin Chen
2026-09-03 19:18 ` Jonathan Cameron
2026-09-01 0:33 ` [PATCH v3 06/13] iommu/arm-smmu-v3: Submit CMDQ_OP_PRI_RESP for IOPF event Nicolin Chen
2026-09-03 19:18 ` Jonathan Cameron
2026-09-05 1:15 ` Nicolin Chen
2026-09-09 17:54 ` Jonathan Cameron
2026-09-01 0:33 ` [PATCH v3 07/13] iommu/arm-smmu-v3: Disable the queue IRQs before disabling the SMMU Nicolin Chen
2026-09-03 19:18 ` Jonathan Cameron
2026-09-05 3:24 ` Nicolin Chen
2026-09-09 17:58 ` Jonathan Cameron
2026-09-01 0:33 ` [PATCH v3 08/13] iommu/arm-smmu-v3: Disable PRI when no IRQ handler is registered Nicolin Chen
2026-09-03 19:18 ` Jonathan Cameron
2026-09-04 14:15 ` Jason Gunthorpe
2026-09-09 17:59 ` Jonathan Cameron
2026-09-09 19:05 ` Nicolin Chen
2026-09-01 0:33 ` [PATCH v3 09/13] iommu/arm-smmu-v3: Support PRI Page Request in arm_smmu_handle_ppr() Nicolin Chen
2026-09-03 19:18 ` Jonathan Cameron
2026-09-05 5:08 ` Nicolin Chen
2026-09-09 18:01 ` Jonathan Cameron
2026-09-09 19:09 ` Nicolin Chen
2026-09-01 0:33 ` Nicolin Chen [this message]
2026-09-03 19:18 ` [PATCH v3 10/13] iommu/arm-smmu-v3: Allocate IOPF queue for ARM_SMMU_FEAT_PRI Jonathan Cameron
2026-09-01 0:33 ` [PATCH v3 11/13] PCI/ATS: Add PRI stubs Nicolin Chen
2026-09-03 19:18 ` Jonathan Cameron
2026-09-01 0:33 ` [PATCH v3 12/13] PCI/ATS: Export pci_enable_pri() and pci_reset_pri() Nicolin Chen
2026-09-03 19:18 ` Jonathan Cameron
2026-09-01 0:33 ` [PATCH v3 13/13] iommu/arm-smmu-v3: Enable PRI for PCI device in arm_smmu_probe_device() Nicolin Chen
2026-09-03 19:18 ` Jonathan Cameron
2026-09-05 5:53 ` Nicolin Chen
2026-09-03 19:18 ` [PATCH v3 00/13] iommu/arm-smmu-v3: Add PRI support Jonathan Cameron
2026-09-04 14:10 ` Jason Gunthorpe
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