Messages in this thread | | | Subject | Re: [PATCH 18/23] iommu: Express DMA strictness via the domain type | From | Lu Baolu <> | Date | Mon, 26 Jul 2021 19:31:30 +0800 |
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On 2021/7/26 16:27, Robin Murphy wrote: > On 2021-07-24 06:29, Lu Baolu wrote: >> Hi Robin, >> >> On 2021/7/22 2:20, Robin Murphy wrote: >>> Eliminate the iommu_get_dma_strict() indirection and pipe the >>> information through the domain type from the beginning. Besides >>> the flow simplification this also has several nice side-effects: >>> >>> - Automatically implies strict mode for untrusted devices by >>> virtue of their IOMMU_DOMAIN_DMA override. >>> - Ensures that we only ends up using flush queues for drivers >>> which are aware of them and can actually benefit. >> >> Is this expressed by vendor iommu driver has ops->flush_iotlb_all? > > No, it's literally whether ->domain_alloc accepts the DMA_DOMAIN_FQ type > or not.
Get it. Thank you!
Best regards, baolu
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