From: Christoph Hellwig <hch@lst.de>
To: Alex Williamson <alex.williamson@redhat.com>
Cc: Diana Craciun <diana.craciun@oss.nxp.com>,
Cornelia Huck <cohuck@redhat.com>,
Kirti Wankhede <kwankhede@nvidia.com>,
Eric Auger <eric.auger@redhat.com>,
Jason Gunthorpe <jgg@ziepe.ca>,
Terrence Xu <terrence.xu@intel.com>,
kvm@vger.kernel.org, Jason Gunthorpe <jgg@nvidia.com>,
Kevin Tian <kevin.tian@intel.com>
Subject: [PATCH 06/15] vfio: remove the iommudata hack for noiommu groups
Date: Fri, 24 Sep 2021 17:56:56 +0200 [thread overview]
Message-ID: <20210924155705.4258-7-hch@lst.de> (raw)
In-Reply-To: <20210924155705.4258-1-hch@lst.de>
Just pass a noiommu argument to vfio_create_group and set up the
->noiommu flag directly.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
---
drivers/vfio/vfio.c | 21 ++++++++-------------
1 file changed, 8 insertions(+), 13 deletions(-)
diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c
index b1ed156adccd04..23eaebd2e28cd9 100644
--- a/drivers/vfio/vfio.c
+++ b/drivers/vfio/vfio.c
@@ -335,7 +335,8 @@ static void vfio_group_unlock_and_free(struct vfio_group *group)
/**
* Group objects - create, release, get, put, search
*/
-static struct vfio_group *vfio_create_group(struct iommu_group *iommu_group)
+static struct vfio_group *vfio_create_group(struct iommu_group *iommu_group,
+ bool noiommu)
{
struct vfio_group *group, *tmp;
struct device *dev;
@@ -354,9 +355,7 @@ static struct vfio_group *vfio_create_group(struct iommu_group *iommu_group)
atomic_set(&group->opened, 0);
init_waitqueue_head(&group->container_q);
group->iommu_group = iommu_group;
-#ifdef CONFIG_VFIO_NOIOMMU
- group->noiommu = (iommu_group_get_iommudata(iommu_group) == &noiommu);
-#endif
+ group->noiommu = noiommu;
BLOCKING_INIT_NOTIFIER_HEAD(&group->notifier);
group->nb.notifier_call = vfio_iommu_group_notifier;
@@ -791,12 +790,11 @@ static struct vfio_group *vfio_noiommu_group_alloc(struct device *dev)
return ERR_CAST(iommu_group);
iommu_group_set_name(iommu_group, "vfio-noiommu");
- iommu_group_set_iommudata(iommu_group, &noiommu, NULL);
ret = iommu_group_add_device(iommu_group, dev);
if (ret)
goto out_put_group;
- group = vfio_create_group(iommu_group);
+ group = vfio_create_group(iommu_group, true);
if (IS_ERR(group)) {
ret = PTR_ERR(group);
goto out_remove_device;
@@ -843,7 +841,7 @@ static struct vfio_group *vfio_group_find_or_alloc(struct device *dev)
goto out_put;
/* a newly created vfio_group keeps the reference. */
- group = vfio_create_group(iommu_group);
+ group = vfio_create_group(iommu_group, false);
if (IS_ERR(group))
goto out_put;
return group;
@@ -874,10 +872,8 @@ int vfio_register_group_dev(struct vfio_device *device)
dev_WARN(device->dev, "Device already exists on group %d\n",
iommu_group_id(group->iommu_group));
vfio_device_put(existing_device);
-#ifdef CONFIG_VFIO_NOIOMMU
- if (iommu_group_get_iommudata(group->iommu_group) == &noiommu)
+ if (group->noiommu)
iommu_group_remove_device(device->dev);
-#endif
vfio_group_put(group);
return -EBUSY;
}
@@ -1023,10 +1019,9 @@ void vfio_unregister_group_dev(struct vfio_device *device)
if (list_empty(&group->device_list))
wait_event(group->container_q, !group->container);
-#ifdef CONFIG_VFIO_NOIOMMU
- if (iommu_group_get_iommudata(group->iommu_group) == &noiommu)
+ if (group->noiommu)
iommu_group_remove_device(device->dev);
-#endif
+
/* Matches the get in vfio_register_group_dev() */
vfio_group_put(group);
}
--
2.30.2
next prev parent reply other threads:[~2021-09-24 16:05 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-24 15:56 cleanup vfio iommu_group creation v6 Christoph Hellwig
2021-09-24 15:56 ` [PATCH 01/15] vfio: Move vfio_iommu_group_get() to vfio_register_group_dev() Christoph Hellwig
2021-09-24 15:56 ` [PATCH 02/15] vfio: factor out a vfio_iommu_driver_allowed helper Christoph Hellwig
2021-09-24 15:56 ` [PATCH 03/15] vfio: remove the iommudata check in vfio_noiommu_attach_group Christoph Hellwig
2021-09-24 15:56 ` [PATCH 04/15] vfio: factor out a vfio_group_find_or_alloc helper Christoph Hellwig
2021-09-24 15:56 ` [PATCH 05/15] vfio: refactor noiommu group creation Christoph Hellwig
2021-09-24 15:56 ` Christoph Hellwig [this message]
2021-09-24 15:56 ` [PATCH 07/15] vfio: simplify iommu group allocation for mediated devices Christoph Hellwig
2021-09-24 15:56 ` [PATCH 08/15] vfio: remove unused method from vfio_iommu_driver_ops Christoph Hellwig
2021-09-24 15:56 ` [PATCH 09/15] vfio: move the vfio_iommu_driver_ops interface out of <linux/vfio.h> Christoph Hellwig
2021-09-24 15:57 ` [PATCH 10/15] vfio: remove the unused mdev iommu hook Christoph Hellwig
2021-09-24 15:57 ` [PATCH 11/15] vfio: clean up the check for mediated device in vfio_iommu_type1 Christoph Hellwig
2021-09-24 15:57 ` [PATCH 12/15] vfio/spapr_tce: reject mediated devices Christoph Hellwig
2021-09-24 15:57 ` [PATCH 13/15] vfio/iommu_type1: initialize pgsize_bitmap in ->open Christoph Hellwig
2021-09-24 17:48 ` Jason Gunthorpe
2021-09-24 18:37 ` Alex Williamson
2021-09-27 11:49 ` Christoph Hellwig
2021-09-27 12:56 ` Alex Williamson
2021-09-27 13:53 ` Christoph Hellwig
2021-09-24 15:57 ` [PATCH 14/15] vfio/iommu_type1: remove the "external" domain Christoph Hellwig
2021-09-24 15:57 ` [PATCH 15/15] vfio/iommu_type1: remove IS_IOMMU_CAP_DOMAIN_IN_CONTAINER Christoph Hellwig
2021-09-30 20:16 ` cleanup vfio iommu_group creation v6 Alex Williamson
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