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SubjectRe: [PATCH v5 2/7] iommu: Decouple iommu_present() from bus ops
On Wed, Oct 11, 2023 at 07:14:49PM +0100, Robin Murphy wrote:
> Much as I'd like to remove iommu_present(), the final remaining users
> are proving stubbornly difficult to clean up, so kick that can down the
> road and just rework it to preserve the current behaviour without
> depending on bus ops. Since commit 57365a04c921 ("iommu: Move bus setup
> to IOMMU device registration"), any registered IOMMU instance is already
> considered "present" for every entry in iommu_buses, so it's simply a
> case of validating the bus and checking we have at least once IOMMU.
>
> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
> Signed-off-by: Robin Murphy <robin.murphy@arm.com>
>
> ---
>
> v3: Tweak to use the ops-based check rather than group-based, to
> properly match the existing behaviour
> v4: Just look for IOMMU instances instead of managed devices
> ---

Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>

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