Messages in this thread | | | Subject | Re: [PATCH net-next] sfc: Stop using iommu_present() | From | Edward Cree <> | Date | Thu, 7 Apr 2022 17:05:18 +0100 |
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On 05/04/2022 14:40, Robin Murphy wrote: > Even if an IOMMU might be present for some PCI segment in the system, > that doesn't necessarily mean it provides translation for the device > we care about. It appears that what we care about here is specifically > whether DMA mapping ops involve any IOMMU overhead or not, so check for > translation actually being active for our device. > > Signed-off-by: Robin Murphy <robin.murphy@arm.com> Acked-by: Edward Cree <ecree.xilinx@gmail.com>
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