> From: Robin Murphy <robin.murphy@xxxxxxx> > Sent: Friday, July 15, 2022 9:13 PM > > On 2022-07-05 18:08, Robin Murphy wrote: > > v2: https://lore.kernel.org/linux- > iommu/cover.1650890638.git.robin.murphy@xxxxxxx/ > > > > Hi all, > > > > Here's v3, now with working x86! Having finally made sense of how I > > broke Intel, I've given AMD the same fix by inspection. I'm still not > > 100% sure about s390, but it looks like it should probably be OK since > > it seems to register an IOMMU instance for each PCI device (?!) before > > disappearing into PCI hotplug code, wherein I assume we should never see > > a PCI device appear without its IOMMU already registered. > > > > Otherwise, the only other updates are hooking up the new host1x context > > bus (noting that it now takes all of 4 lines to support a whole new bus, > > yay!), and a slight tweak to make sure we keep rejecting registration of > > conflicting iommu_ops rather than needlessly change that just yet. > > FWIW I've prepared v4, including Matt's s390 patch and some nice extra > cleanups thanks to Kevin's suggestions, but have now decided to wait to > rebase and send it after the upcoming merge window. If anyone's > interested in the meantime, there's a preliminary branch here: > > https://gitlab.arm.com/linux-arm/linux-rm/-/commits/bus-set-iommu-v4 > > (temporarily including the host1x patch from -next to avoid breakage on > arm64 as well) > This looks good to me.
