On Wed, Oct 23, 2024 at 04:19:02AM -0400, Michael S. Tsirkin wrote: > On Tue, Oct 22, 2024 at 11:58:19PM -0700, Christoph Hellwig wrote: > > On Sat, Oct 19, 2024 at 08:16:44PM -0400, Michael S. Tsirkin wrote: > > > Because people want to move from some vendor specific solution with vfio > > > to a standard vdpa compatible one with vdpa. > > > > So now you have a want for new use cases and you turn that into a must > > for supporting completely insecure and dangerous crap. > > Nope. > > kernel is tainted -> unsupported > > whoever supports tainted kernels is already in dangerous waters. That's not a carte blanche for doing whatever crazy stuff you want. And if you don't trust me I'll add Greg who has a very clear opinion on IOMMU-bypassing user I/O hooks in the style of the uio driver as well I think :)