Re: [PATCH v2 05/15] iommu: Add QDA compute context bank bus to iommu_buses
"Joerg Roedel (AMD)" <[email protected]>
| Newsgroups | dev.linux.lists.llvm,dev.linux.lists.iommu,org.freedesktop.lists.dri-devel,org.kernel.vger.linux-arm-msm,org.kernel.vger.linux-doc,org.kernel.vger.linux-kernel,org.kernel.vger.linux-media |
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| Message-ID | <[email protected]> |
On Mon, Aug 17, 2026 at 10:17:40AM +0530, Ekansh Gupta wrote: > Register the QDA compute context bank bus (qda-compute-cb) with the > IOMMU subsystem by adding it to the iommu_buses[] array. > > The QDA driver creates synthetic devices on this bus to represent > IOMMU context banks (CBs). Each CB device needs its own IOMMU domain > so that the DSP memory manager can enforce per-session address space > isolation. Without this registration, the IOMMU subsystem does not > probe CB devices for IOMMU groups and of_dma_configure() in the bus > dma_configure callback has no IOMMU domain to attach to. > > Assisted-by: Claude:claude-sonnet-5 > Reviewed-by: Dmitry Baryshkov <[email protected]> > Signed-off-by: Ekansh Gupta <[email protected]> > --- > drivers/iommu/iommu.c | 4 ++++ > 1 file changed, 4 insertions(+) Acked-by: Joerg Roedel <[email protected]>