Messages in this thread | | | Subject | Re: [PATCH] iommu: Add device name to iommu map/unmap trace events | From | "chenxiang (M)" <> | Date | Tue, 6 Apr 2021 14:56:53 +0800 |
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Hi,
在 2021/2/12 18:50, Joerg Roedel 写道: > On Tue, Feb 09, 2021 at 06:06:20PM +0530, Sai Prakash Ranjan wrote: >> diff --git a/include/linux/iommu.h b/include/linux/iommu.h >> index 5e7fe519430a..6064187d9bb6 100644 >> --- a/include/linux/iommu.h >> +++ b/include/linux/iommu.h >> @@ -87,6 +87,7 @@ struct iommu_domain { >> void *handler_token; >> struct iommu_domain_geometry geometry; >> void *iova_cookie; >> + char dev_name[32]; >> }; > No, definitly not. A domain is a device DMA address space which can be > used by more than one device. Just look at IOMMU groups with more than > one member device, in this case just one device name would be very > misleading.
Is it possible to use group id to identify different domains?
> > Regards, > > Joerg > _______________________________________________ > iommu mailing list > iommu@lists.linux-foundation.org > https://lists.linuxfoundation.org/mailman/listinfo/iommu > > . >
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