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Date:   Thu, 12 Oct 2023 20:58:31 +0800
From:   Baolu Lu <baolu.lu@...ux.intel.com>
To:     Robin Murphy <robin.murphy@....com>, joro@...tes.org,
        will@...nel.org
Cc:     baolu.lu@...ux.intel.com, iommu@...ts.linux.dev, jgg@...dia.com,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 2/7] iommu: Decouple iommu_present() from bus ops

On 2023/10/12 2:14, 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@...dia.com>
> Signed-off-by: Robin Murphy<robin.murphy@....com>

Reviewed-by: Lu Baolu <baolu.lu@...ux.intel.com>

Best regards,
baolu

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