On Tue, Oct 28, 2025 at 02:21:32PM +0100, Eric Auger wrote: > > > On 10/28/25 1:16 PM, Jason Gunthorpe wrote: > > On Mon, Oct 27, 2025 at 10:53:10AM -0700, Nicolin Chen wrote: > > > >> Hmm, that sounds a legit reason, though adding the ATS support to > >> the emulated SMMUv3 isn't seemingly a small effort... > > What is "emulated ATS" anyhow? > I guess it means implementing ATS translation requests and capability to > send ATS invalidations. something like: > > https://lore.kernel.org/all/[email protected]/
Why would you even want this? The cover letter didn't explain what the point was. qemu emulating two levels of IOTLB caching in software, with a software page table walk?? Why?? Jason
