Thread (82 messages) 82 messages, 6 authors, 2025-11-06

Re: [PATCH v4 22/28] iommu/arm-smmu-v3-kvm: Emulate CMDQ for host

From: Jason Gunthorpe <jgg@ziepe.ca>
Date: 2025-09-17 12:36:04
Also in: kvmarm, linux-iommu, lkml

On Tue, Sep 16, 2025 at 03:19:02PM +0000, Mostafa Saleh wrote:
I think the fix for the problem Will mentioned is to just use CMOs
before accessing the host structures, so that should be simple.
If it turns to be more complicated, I am happy to drop the support
for non-coherent devices from this series and we can add it later.
I feel like it is easier/better to fix the driver to use cachable
memory than to add CMOs to the pkvm side..

This way it will help qemu/etc as well.

Jason
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