Messages in this thread | | | Date | Fri, 18 Sep 2020 12:02:36 +0200 | From | Joerg Roedel <> | Subject | Re: [PATCH v9 0/7] IOMMU user API enhancement |
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Hi Jacob,
On Fri, Sep 11, 2020 at 02:57:49PM -0700, Jacob Pan wrote: > IOMMU user API header was introduced to support nested DMA translation and > related fault handling. The current UAPI data structures consist of three > areas that cover the interactions between host kernel and guest: > - fault handling > - cache invalidation > - bind guest page tables, i.e. guest PASID > > Future extensions are likely to support more architectures and vIOMMU features. > > In the previous discussion, using user-filled data size and feature flags is > made a preferred approach over a unified version number. > https://lkml.org/lkml/2020/1/29/45 > > In addition to introduce argsz field to data structures, this patchset is also > trying to document the UAPI design, usage, and extension rules. VT-d driver > changes to utilize the new argsz field is included, VFIO usage is to follow. > > This set is available at: > https://github.com/jacobpan/linux.git vsva_v5.9_uapi_v9
This changes user visible structs in incompatible ways, are you sure those are not used yet anywhere?
Please address Randy's comments on patch 1 and my comment about the build-time checking and repost with linux-api@vger.kernel.org on Cc.
Regards,
Joerg
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