On Mon, Jun 02, 2025 at 01:48:57PM -0300, Jason Gunthorpe wrote: > On Tue, Jun 03, 2025 at 12:25:21AM +0800, Xu Yilun wrote: > > > > Looking at your patch series, I understand the reason you need a vfio > > > ioctl is to call pci_request_regions_exclusive—is that correct? > > > > The immediate reason is to unbind the TDI before unmapping the BAR. > > Maybe you should just do this directly, require the TSM layer to issue > an unbind if it gets any requests to change the secure EPT? The TSM layer won't touch S-EPT, KVM manages S-EPT. Similarly IOMMUFD/IOMMU driver manages IOMMUPT. When p2p is involved, still need to unbind the TDI first then unmap the BAR for IOMMUPT. Thanks, Yilun > > Jason
