Messages in this thread | | | Date | Wed, 29 Nov 2023 16:26:15 -0400 | From | Jason Gunthorpe <> | Subject | Re: [PATCH 4/5] iommu/vt-d: Add support for static identity domain |
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On Mon, Nov 20, 2023 at 07:29:43PM +0800, Lu Baolu wrote:
> @@ -2311,6 +2316,13 @@ static int device_def_domain_type(struct device *dev) > return IOMMU_DOMAIN_IDENTITY; > } > > + /* > + * Hardware does not support the passthrough translation mode. > + * Always use a dynamaic mapping domain. > + */ > + if (!ecap_pass_through(iommu->ecap)) > + return IOMMU_DOMAIN_DMA; > +
Doesn't this return from def_domain_type completely prevent using an identity domain?
I thought the point of this was to allow the identity domain but have it be translating?
Jason
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