On Mon, Jun 07, 2021 at 04:08:02PM -0300, Jason Gunthorpe wrote: > Compatibility is important, but when I look in the kernel code I see > very few places that call wbinvd(). Basically all DRM for something > relavent to qemu. > > That tells me that the vast majority of PCI devices do not generate > no-snoop traffic. Part of it is that we have no general API for it, because the DRM folks as usual just tarted piling up local hacks instead of introducing a proper API..
