From: Vivek Gautam <vivek.gautam@arm.com>
To: linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
iommu@lists.linux-foundation.org,
virtualization@lists.linux-foundation.org
Cc: joro@8bytes.org, will.deacon@arm.com, mst@redhat.com,
robin.murphy@arm.com, jean-philippe@linaro.org,
eric.auger@redhat.com, kevin.tian@intel.com,
jacob.jun.pan@linux.intel.com, yi.l.liu@intel.com,
Lorenzo.Pieralisi@arm.com, shameerali.kolothum.thodi@huawei.com,
Vivek Gautam <vivek.gautam@arm.com>
Subject: [PATCH RFC v1 04/11] iommu/virtio: Add a io page fault queue
Date: Fri, 23 Apr 2021 15:21:40 +0530 [thread overview]
Message-ID: <20210423095147.27922-5-vivek.gautam@arm.com> (raw)
In-Reply-To: <20210423095147.27922-1-vivek.gautam@arm.com>
Add a io page fault queue to the driver so that it can be used
to redirect faults to the handler.
Signed-off-by: Vivek Gautam <vivek.gautam@arm.com>
---
drivers/iommu/virtio-iommu.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/drivers/iommu/virtio-iommu.c b/drivers/iommu/virtio-iommu.c
index fd237cad1ce5..3da5f0807711 100644
--- a/drivers/iommu/virtio-iommu.c
+++ b/drivers/iommu/virtio-iommu.c
@@ -58,6 +58,7 @@ struct viommu_dev {
struct list_head endpoints;
struct workqueue_struct *pri_wq;
struct viommu_dev_pri_work *pri_work;
+ struct iopf_queue *iopf_pri;
/* Device configuration */
struct iommu_domain_geometry geometry;
@@ -581,6 +582,15 @@ static int viommu_add_pstf(struct viommu_endpoint *vdev, void *pstf, size_t len)
return 0;
}
+static int viommu_init_queues(struct viommu_dev *viommu)
+{
+ viommu->iopf_pri = iopf_queue_alloc(dev_name(viommu->dev));
+ if (!viommu->iopf_pri)
+ return -ENOMEM;
+
+ return 0;
+}
+
static int viommu_probe_endpoint(struct viommu_dev *viommu, struct device *dev)
{
int ret;
@@ -670,6 +680,15 @@ static int viommu_probe_endpoint(struct viommu_dev *viommu, struct device *dev)
list_add(&ep->list, &viommu->endpoints);
+ ret = viommu_init_queues(viommu);
+ if (ret)
+ goto out_free_eps;
+
+ kfree(probe);
+ return 0;
+
+out_free_eps:
+ kfree(ep);
out_free:
kfree(probe);
return ret;
--
2.17.1
next prev parent reply other threads:[~2021-04-23 9:52 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-23 9:51 [PATCH RFC v1 00/11] iommu/virtio: vSVA support with Arm Vivek Gautam
2021-04-23 9:51 ` [PATCH RFC v1 01/11] uapi/virtio-iommu: Add page request grp-id and flags information Vivek Gautam
2021-09-21 15:58 ` Jean-Philippe Brucker
2021-09-30 4:56 ` Vivek Kumar Gautam
2021-09-30 8:49 ` Jean-Philippe Brucker
2021-09-30 10:57 ` Vivek Kumar Gautam
2021-04-23 9:51 ` [PATCH RFC v1 02/11] iommu/virtio: Maintain a list of endpoints served by viommu_dev Vivek Gautam
2021-09-21 15:59 ` Jean-Philippe Brucker
2021-09-30 9:17 ` Vivek Kumar Gautam
2021-04-23 9:51 ` [PATCH RFC v1 03/11] iommu/virtio: Handle incoming page faults Vivek Gautam
2021-09-21 16:03 ` Jean-Philippe Brucker
2021-10-11 8:11 ` Vivek Gautam
2021-10-11 9:16 ` Jean-Philippe Brucker
2021-10-11 9:20 ` Vivek Kumar Gautam
2021-04-23 9:51 ` Vivek Gautam [this message]
2021-04-23 9:51 ` [PATCH RFC v1 05/11] iommu/virtio: Add SVA feature and related enable/disable callbacks Vivek Gautam
2021-09-21 16:04 ` Jean-Philippe Brucker
2021-04-23 9:51 ` [PATCH RFC v1 06/11] iommu/pasid-table: Add pasid table ops for shared context management Vivek Gautam
2021-04-23 9:51 ` [PATCH RFC v1 07/11] iommu/arm-smmu-v3: Move shared context descriptor code to cd-lib Vivek Gautam
2021-04-23 9:51 ` [PATCH RFC v1 08/11] iommu/arm-smmu-v3: Implement shared context alloc and free ops Vivek Gautam
2021-09-21 16:07 ` Jean-Philippe Brucker
2021-09-30 9:50 ` Vivek Kumar Gautam
2021-04-23 9:51 ` [PATCH RFC v1 09/11] iommu/virtio: Implement sva bind/unbind calls Vivek Gautam
2021-09-21 16:09 ` Jean-Philippe Brucker
2021-04-23 9:51 ` [PATCH RFC v1 10/11] uapi/virtio-iommu: Add a new request type to send page response Vivek Gautam
2021-09-21 16:16 ` Jean-Philippe Brucker
2021-09-30 9:24 ` Vivek Kumar Gautam
2021-10-06 9:55 ` Jean-Philippe Brucker
2021-04-23 9:51 ` [PATCH RFC v1 11/11] iommu/virtio: Add support " Vivek Gautam
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