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Wed, 28 Aug 2024 10:14:32 -0700 Date: Wed, 28 Aug 2024 10:14:31 -0700 From: Nicolin Chen To: Shameerali Kolothum Thodi CC: Jason Gunthorpe , "acpica-devel@lists.linux.dev" , "Guohanjun (Hanjun Guo)" , "iommu@lists.linux.dev" , Joerg Roedel , Kevin Tian , "kvm@vger.kernel.org" , Len Brown , "linux-acpi@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , Lorenzo Pieralisi , "Rafael J. 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Wysocki ; Robert > > Moore ; Robin Murphy > > ; Sudeep Holla ; Will > > Deacon ; Alex Williamson ; > > Eric Auger ; Jean-Philippe Brucker > philippe@linaro.org>; Moritz Fischer ; Michael Shavit > > ; patches@lists.linux.dev; Shameerali Kolothum > > Thodi ; Mostafa Saleh > > > > Subject: Re: [PATCH v2 0/8] Initial support for SMMUv3 nested translation > > > > > As mentioned above, the VIOMMU series would be required to test the > > entire nesting feature, which now has a v2 rebasing on this series. I tested it > > with a paring QEMU branch. Please refer to: > > https://lore.kernel.org/linux- > > iommu/cover.1724776335.git.nicolinc@nvidia.com/ > > Thanks for this. I haven't gone through the viommu and its Qemu branch > yet. The way we present nested-smmuv3/iommufd to the Qemu seems to > have changed with the above Qemu branch(multiple nested SMMUs). > The old Qemu command line for nested setup doesn't work anymore. > > Could you please share an example Qemu command line to verify this > series(Sorry, if I missed it in the links/git). My bad. I updated those two "for_iommufd_" QEMU branches with a README commit on top of each for the reference command. By the way, I wonder how many SMMUv3 instances there are on the platforms that SMMUv3 developers here are running on -- if some one is also working on a chip that has multiple instances? Thanks Nicolin