Re: [PATCH v9 05/10] uacce: Enable IOMMU_DEV_FEAT_IOPF

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On 2021/1/8 下午10:52, Jean-Philippe Brucker wrote:
The IOPF (I/O Page Fault) feature is now enabled independently from the
SVA feature, because some IOPF implementations are device-specific and
do not require IOMMU support for PCIe PRI or Arm SMMU stall.

Enable IOPF unconditionally when enabling SVA for now. In the future, if
a device driver implementing a uacce interface doesn't need IOPF
support, it will need to tell the uacce module, for example with a new
flag.

Signed-off-by: Jean-Philippe Brucker <jean-philippe@xxxxxxxxxx>
---
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Zhangfei Gao <zhangfei.gao@xxxxxxxxxx>
Cc: Zhou Wang <wangzhou1@xxxxxxxxxxxxx>
Thanks Jean
Acked-by: Zhangfei Gao <zhangfei.gao@xxxxxxxxxx>




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