Re: [PATCH 2/2] iommu/amd: Force identity mode for selected GPUs only
Vasant Hegde <[email protected]> Tue, 28 Jul 2026 10:22:24 +0530
| Newsgroups | dev.linux.lists.iommu,org.kernel.vger.linux-pci |
|---|---|
| Message-ID | <[email protected]> |
Mario, On 7/27/2026 8:15 PM, Mario Limonciello wrote: > > > On 7/26/26 23:19, Vasant Hegde wrote: >> >> .../... >>> >>> I think this can probably be dropped now? There is no intersection of >>> this old broken embedded GPU and a CPU that supports CC right? >> >> >> I did consider dropping these two checks, but I was not entirely sure. So I kept >> as is for now. Once these series settles and I can go with next step of dropping >> these two checks. >> >> @Alex, @Mario, Any suggestions ? >> > > The background comes from this series: > > https://lore.kernel.org/all/[email protected]/ Thanks for old link. So it looks like we are good to drop SME check? Also is it safe to assume SNP is not enabled on these platform and drop that check? Anyway SNP requirement (which doesn't support identity mapping) and APU requirement (needs identity mapping) is conflicting. -Vasant