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Message-ID: <d446571b-d267-fa4b-8b3a-b65a41f2048d@linux.intel.com> 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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