From: Jason Gunthorpe <jgg@ziepe.ca>
To: Vasant Hegde <vasant.hegde@amd.com>
Cc: iommu@lists.linux.dev, joro@8bytes.org,
suravee.suthikulpanit@amd.com, wei.huang2@amd.com,
jsnitsel@redhat.com
Subject: Re: [PATCH v3 10/13] iommu/amd: Refactor helper function for attaching / detaching device
Date: Thu, 30 Nov 2023 13:55:23 -0400 [thread overview]
Message-ID: <20231130175523.GH1394392@ziepe.ca> (raw)
In-Reply-To: <d99a1d56-6b29-53e8-1d2b-564a56548009@amd.com>
On Thu, Nov 23, 2023 at 11:09:20PM +0530, Vasant Hegde wrote:
>
>
> On 11/7/2023 6:58 PM, Jason Gunthorpe wrote:
> > On Tue, Nov 07, 2023 at 11:25:49AM +0530, Vasant Hegde wrote:
> >
> >>> RID domain=BLOCKED & PASID - ?? [V=1, TV=0, GV=1, GIOV=1 with GCR3 entry 0 being non-valid]
> >>
> >> I haven't thought this scenario. Why do we even need this case?
> >
> > It is triggerable by iommufd, it has to be supported.
>
> You mean PASID support with BLOCKED domain?
Yes, that is API possible.
> I have seen those part of code and it makes sense to have BLOCKED domain
> implemented. Its in our TODO list. I intended to look into domain allocation
> path more closely once we finish SVA series.
Great!
> > The page table type determines if the GCR3 table is loaded, the domain
> > ID is needed if the GCR3 table is loaded.
>
> For now I'd prefer to keep it in do_attach/detach path. I want to rework
> per-device-domain-ID after SVA series (i.e. allocate per-device-domain-ID only
> when its needed).
Yeah, that sounds OK
Jason
next prev parent reply other threads:[~2023-11-30 17:55 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-13 15:16 [PATCH v3 00/13] iommu/amd: SVA Support (part 3) - refactor support for GCR3 table Vasant Hegde
2023-10-13 15:16 ` [PATCH v3 01/13] iommu/amd: Pass struct iommu_dev_data to set_dte_entry() Vasant Hegde
2023-11-05 18:00 ` Jason Gunthorpe
2023-10-13 15:16 ` [PATCH v3 02/13] iommu/amd: Introduce get_amd_iommu_from_dev() Vasant Hegde
2023-11-05 18:05 ` Jason Gunthorpe
2023-11-06 11:54 ` Vasant Hegde
2023-10-13 15:16 ` [PATCH v3 03/13] iommu/amd: Introduce struct protection_domain.pd_mode Vasant Hegde
2023-11-05 18:07 ` Jason Gunthorpe
2023-10-13 15:16 ` [PATCH v3 04/13] iommu/amd: Introduce per-device GCR3 table Vasant Hegde
2023-10-13 15:16 ` [PATCH v3 05/13] iommu/amd: Use protection_domain.flags to check page table mode Vasant Hegde
2023-10-13 15:16 ` [PATCH v3 06/13] iommu/amd: Introduce per-device domain ID to workaround potential TLB aliasing issue Vasant Hegde
2023-11-05 18:16 ` Jason Gunthorpe
2023-11-06 12:39 ` Vasant Hegde
2023-11-06 13:36 ` Jason Gunthorpe
2023-11-07 5:30 ` Vasant Hegde
2023-11-07 13:21 ` Jason Gunthorpe
2023-12-12 5:53 ` Vasant Hegde
2023-10-13 15:16 ` [PATCH v3 07/13] iommu/amd: Add support for device based flush TLB Vasant Hegde
2023-10-13 15:16 ` [PATCH v3 08/13] iommu/amd: Rearrange GCR3 table setup code Vasant Hegde
2023-11-05 18:16 ` Jason Gunthorpe
2023-10-13 15:16 ` [PATCH v3 09/13] iommu/amd: Refactor helper function for setting / clearing GCR3 Vasant Hegde
2023-11-06 16:51 ` Jason Gunthorpe
2023-11-07 6:16 ` Vasant Hegde
2023-10-13 15:16 ` [PATCH v3 10/13] iommu/amd: Refactor helper function for attaching / detaching device Vasant Hegde
2023-11-06 17:29 ` Jason Gunthorpe
2023-11-07 5:55 ` Vasant Hegde
2023-11-07 13:28 ` Jason Gunthorpe
2023-11-23 17:39 ` Vasant Hegde
2023-11-30 17:55 ` Jason Gunthorpe [this message]
2023-12-12 5:41 ` Vasant Hegde
2023-12-12 14:59 ` Jason Gunthorpe
2023-12-18 5:17 ` Vasant Hegde
2023-10-13 15:16 ` [PATCH v3 11/13] iommu/amd: Refactor protection_domain helper functions Vasant Hegde
2023-11-06 17:30 ` Jason Gunthorpe
2023-10-13 15:16 ` [PATCH v3 12/13] iommu/amd: Refactor GCR3 table " Vasant Hegde
2023-11-06 17:40 ` Jason Gunthorpe
2023-11-07 6:13 ` Vasant Hegde
2023-11-07 13:31 ` Jason Gunthorpe
2023-11-23 17:23 ` Vasant Hegde
2023-11-23 17:24 ` Jason Gunthorpe
2023-10-13 15:16 ` [PATCH v3 13/13] iommu/amd: Remove unused GCR3 table parameters from struct protection_domain Vasant Hegde
2023-11-06 17:33 ` Jason Gunthorpe
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