> From: Nicolin Chen <nicolinc@xxxxxxxxxx> > Sent: Tuesday, June 27, 2023 1:29 AM > > > I'm not sure whether the MSI region needs a special MSI type or > > just a general RESV_DIRECT type for 1:1 mapping, though. > > I don't quite get this part. Isn't MSI having IOMMU_RESV_MSI > and IOMMU_RESV_SW_MSI? Or does it juset mean we should report > the iommu_resv_type along with reserved regions in new ioctl? > Currently those are iommu internal types. When defining the new ioctl we need think about what are necessary presenting to the user. Probably just a list of reserved regions plus a flag to mark which one is SW_MSI? Except SW_MSI all other reserved region types just need the user to reserve them w/o knowing more detail.
