This should be added immediately after every iopt_table_add_domain(), and deleted after every iopt_table_remove_domain() under the ioas->mutex.
Tidy things to be consistent.
Signed-off-by: Jason Gunthorpe jgg@nvidia.com --- drivers/iommu/iommufd/device.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/iommu/iommufd/device.c b/drivers/iommu/iommufd/device.c index 0a80ff7b2e0d79..adb73539b39c0c 100644 --- a/drivers/iommu/iommufd/device.c +++ b/drivers/iommu/iommufd/device.c @@ -243,6 +243,7 @@ static int iommufd_device_do_attach(struct iommufd_device *idev, hwpt->domain); if (rc) goto out_detach; + list_add_tail(&hwpt->hwpt_item, &hwpt->ioas->hwpt_list); } }
@@ -307,7 +308,6 @@ static int iommufd_device_auto_get_domain(struct iommufd_device *idev, rc = iommufd_device_do_attach(idev, hwpt); if (rc) goto out_abort; - list_add_tail(&hwpt->hwpt_item, &ioas->hwpt_list);
mutex_unlock(&ioas->mutex); iommufd_object_finalize(idev->ictx, &hwpt->obj); @@ -753,6 +753,10 @@ iommufd_device_selftest_attach(struct iommufd_ctx *ictx, if (rc) goto out_hwpt;
+ mutex_lock(&ioas->mutex); + list_add_tail(&hwpt->hwpt_item, &hwpt->ioas->hwpt_list); + mutex_unlock(&ioas->mutex); + refcount_inc(&hwpt->obj.users); iommufd_object_finalize(ictx, &hwpt->obj); return hwpt; @@ -765,7 +769,10 @@ iommufd_device_selftest_attach(struct iommufd_ctx *ictx, void iommufd_device_selftest_detach(struct iommufd_ctx *ictx, struct iommufd_hw_pagetable *hwpt) { + mutex_lock(&hwpt->ioas->mutex); iopt_table_remove_domain(&hwpt->ioas->iopt, hwpt->domain); + list_del(&hwpt->hwpt_item); + mutex_unlock(&hwpt->ioas->mutex); refcount_dec(&hwpt->obj.users); } #endif