RE: [PATCH v4 01/17] iommu: Add hwpt_type with user_data for domain_alloc_user op

From: Robin Murphy robin.murphy@arm.com Sent: Friday, September 22, 2023 5:48 PM

I could go on enjoying myself, but basically yeah, "default" can't be a type in itself (at best it would be a meta-type which could be requested, such that it resolves to some real type to actually allocate), so a good name should reflect what the type functionally *means* to the user. IIUC the important distinction is that it's an abstract kernel-owned pagetable for the user to indirectly control via the API, rather than one it owns and writes directly (and thus has to be in a specific agreed format).

IOMMU_HWPT_TYPE_KERNEL then?

IOMMU_HWPT_TYPE_GENERIC also doesn't sound a straight word.