From: Joerg Roedel <joro@8bytes.org>
To: Jason Gunthorpe <jgg@nvidia.com>
Cc: Robin Murphy <robin.murphy@arm.com>,
Vasant Hegde <vasant.hegde@amd.com>,
iommu@lists.linux.dev, suravee.suthikulpanit@amd.com
Subject: Re: [PATCH v3 0/9] iommu/amd: Add Generic IO Page Table Framework Support for v2 Page Table
Date: Thu, 8 Sep 2022 15:30:09 +0200 [thread overview]
Message-ID: <YxnuYTrkC5yoHH84@8bytes.org> (raw)
In-Reply-To: <Yxnr1gBIGwdinIkr@nvidia.com>
On Thu, Sep 08, 2022 at 10:19:18AM -0300, Jason Gunthorpe wrote:
> What is the use case for having PASID nested under another level of
> translation?
Virtualization. Basically having a device access process address spaces
inside a virtual machine. That got never put into code, but it was the
rationale behind it.
Regards,
Joerg
next prev parent reply other threads:[~2022-09-08 13:30 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-25 6:39 [PATCH v3 0/9] iommu/amd: Add Generic IO Page Table Framework Support for v2 Page Table Vasant Hegde
2022-08-25 6:39 ` [PATCH v3 1/9] iommu/amd/io-pgtable: Implement map_pages io_pgtable_ops callback Vasant Hegde
2022-08-25 6:39 ` [PATCH v3 2/9] iommu/amd/io-pgtable: Implement unmap_pages " Vasant Hegde
2022-08-25 6:39 ` [PATCH v3 3/9] iommu/amd: Add map/unmap_pages() iommu_domain_ops callback support Vasant Hegde
2022-08-25 6:39 ` [PATCH v3 4/9] iommu/amd: Refactor amd_iommu_domain_enable_v2 to remove locking Vasant Hegde
2022-08-25 6:39 ` [PATCH v3 5/9] iommu/amd: Update sanity check when enable PRI/ATS for IOMMU v1 table Vasant Hegde
2022-08-25 6:39 ` [PATCH v3 6/9] iommu/amd: Initial support for AMD IOMMU v2 page table Vasant Hegde
2022-08-25 6:39 ` [PATCH v3 7/9] iommu/amd: Add support for Guest IO protection Vasant Hegde
2022-08-25 6:39 ` [PATCH v3 8/9] iommu/amd: Add support for using AMD IOMMU v2 page table for DMA-API Vasant Hegde
2022-08-25 6:39 ` [PATCH v3 9/9] iommu/amd: Add command-line option to enable different page table Vasant Hegde
2022-09-05 11:39 ` [PATCH v3 0/9] iommu/amd: Add Generic IO Page Table Framework Support for v2 Page Table Vasant Hegde
2022-09-06 16:35 ` Robin Murphy
2022-09-07 14:16 ` Joerg Roedel
2022-09-07 16:52 ` Jason Gunthorpe
2022-09-07 18:16 ` Robin Murphy
2022-09-08 0:12 ` Jason Gunthorpe
2022-09-08 12:20 ` Joerg Roedel
2022-09-08 12:53 ` Robin Murphy
2022-09-08 13:19 ` Jason Gunthorpe
2022-09-08 13:30 ` Joerg Roedel [this message]
2022-09-08 13:47 ` Robin Murphy
2022-09-08 13:58 ` Jason Gunthorpe
2022-09-08 15:23 ` Robin Murphy
2022-09-09 1:24 ` Baolu Lu
2022-09-09 7:51 ` Tian, Kevin
2022-09-07 14:14 ` Joerg Roedel
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