Re: [RFCv2 PATCH 05/36] iommu/process: Bind and unbind process to and from devices
From: Yisheng Xie <hidden>
Date: 2017-11-29 06:08:20
Also in:
linux-acpi, linux-arm-kernel, linux-iommu, linux-pci
Possibly related (same subject, not in this thread)
- 2018-01-19 · Re: [RFCv2 PATCH 05/36] iommu/process: Bind and unbind process to and from devices · <hidden>
- 2018-01-19 · Re: [RFCv2 PATCH 05/36] iommu/process: Bind and unbind process to and from devices · Jean-Philippe Brucker <hidden>
- 2017-11-02 · Re: [RFCv2 PATCH 05/36] iommu/process: Bind and unbind process to and from devices · Jean-Philippe Brucker <hidden>
- 2017-10-21 · Re: [RFCv2 PATCH 05/36] iommu/process: Bind and unbind process to and from devices · Sinan Kaya <hidden>
- 2017-10-12 · Re: [RFCv2 PATCH 05/36] iommu/process: Bind and unbind process to and from devices · Joerg Roedel <hidden>
On 2017/10/6 21:31, Jean-Philippe Brucker wrote:
+int iommu_process_bind_device(struct device *dev, struct task_struct *task,
+ int *pasid, int flags)
+{[..]
+ err = iommu_process_attach_locked(context, dev); + if (err) + iommu_process_put_locked(process);
one ref for a context is enough right? so also need call iommu_process_put_locked() if attach ok, or will be leak if user call bind twice for the same device and task.