Messages in this thread | | | Subject | Re: [RFC 04/20] iommu: Add iommu_device_get_info interface | From | Lu Baolu <> | Date | Wed, 29 Sep 2021 17:25:18 +0800 |
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Hi David,
On 2021/9/29 10:52, David Gibson wrote: > On Sun, Sep 19, 2021 at 02:38:32PM +0800, Liu Yi L wrote: >> From: Lu Baolu<baolu.lu@linux.intel.com> >> >> This provides an interface for upper layers to get the per-device iommu >> attributes. >> >> int iommu_device_get_info(struct device *dev, >> enum iommu_devattr attr, void *data); > That fact that this interface doesn't let you know how to size the > data buffer, other than by just knowing the right size for each attr > concerns me. >
We plan to address this by following the comments here.
https://lore.kernel.org/linux-iommu/20210921161930.GP327412@nvidia.com/
Best regards, baolu
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