RE: [PATCH v2 0/8] Initial support for SMMUv3 nested translation

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Hi Nicolin,

> -----Original Message-----
> From: Nicolin Chen <nicolinc@xxxxxxxxxx>
> Sent: Tuesday, August 27, 2024 10:31 PM
> To: Jason Gunthorpe <jgg@xxxxxxxxxx>
> Cc: acpica-devel@xxxxxxxxxxxxxxx; Guohanjun (Hanjun Guo)
> <guohanjun@xxxxxxxxxx>; iommu@xxxxxxxxxxxxxxx; Joerg Roedel
> <joro@xxxxxxxxxx>; Kevin Tian <kevin.tian@xxxxxxxxx>;
> kvm@xxxxxxxxxxxxxxx; Len Brown <lenb@xxxxxxxxxx>; linux-
> acpi@xxxxxxxxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; Lorenzo Pieralisi
> <lpieralisi@xxxxxxxxxx>; Rafael J. Wysocki <rafael@xxxxxxxxxx>; Robert
> Moore <robert.moore@xxxxxxxxx>; Robin Murphy
> <robin.murphy@xxxxxxx>; Sudeep Holla <sudeep.holla@xxxxxxx>; Will
> Deacon <will@xxxxxxxxxx>; Alex Williamson <alex.williamson@xxxxxxxxxx>;
> Eric Auger <eric.auger@xxxxxxxxxx>; Jean-Philippe Brucker <jean-
> philippe@xxxxxxxxxx>; Moritz Fischer <mdf@xxxxxxxxxx>; Michael Shavit
> <mshavit@xxxxxxxxxx>; patches@xxxxxxxxxxxxxxx; Shameerali Kolothum
> Thodi <shameerali.kolothum.thodi@xxxxxxxxxx>; Mostafa Saleh
> <smostafa@xxxxxxxxxx>
> 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@xxxxxxxxxx/

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).

Thanks,
Shameer 









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