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From: Jason Gunthorpe <jgg@ziepe.ca>
To: "Suthikulpanit, Suravee" <suravee.suthikulpanit@amd.com>
Cc: Vasant Hegde <vasant.hegde@amd.com>,
	iommu@lists.linux.dev, joro@8bytes.org, wei.huang2@amd.com,
	jsnitsel@redhat.com
Subject: Re: [PATCH 09/11] iommu/amd: Introduce helper functions for AMD IOMMU v2 driver
Date: Fri, 11 Aug 2023 10:17:55 -0300	[thread overview]
Message-ID: <ZNY1A6e5S80heWoj@ziepe.ca> (raw)
In-Reply-To: <c5572a08-42b4-c778-b6ce-21fe44190ec6@amd.com>

On Thu, Aug 10, 2023 at 06:34:46PM -0700, Suthikulpanit, Suravee wrote:

> Supporting the IOMMU v2API adds complication on how IOMMU domain for v2 page
> table is managed due to several restrictions, and it is conflicting with the
> upcoming SVA support.
> 
> Since this patch targeting v6.6 is dropping IOMMUv2 support:
> 
> [PATCH V2 4/5] drm/amdkfd: drop IOMMUv2 support
> (https://www.spinics.net/lists/amd-gfx/msg96082.html)
> 
> Subsequently, we will go ahead and remove the AMD IOMMU v2 driver since
> there is no in-kernel dependencies. This should simplify the domain
> management, and should be easier to introduce the SVA support afterward.
> 
> We will rework this series and send out v2 shortly.

Oh wow that is great news. Lets go forward on that basis.

Please make sure the AMD driver has zero EXPORT_SYMBOL's in it after
the above is applied

Thanks,
Jason

  reply	other threads:[~2023-08-11 13:17 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-08-08 10:02 [PATCH 00/11] iommu/amd: SVA support (part 2) - refactor support for GCR3 table Vasant Hegde
2023-08-08 10:02 ` [PATCH 01/11] iommu/amd: Rename helper function rlookup_amd_iommu() Vasant Hegde
2023-08-08 15:28   ` Jason Gunthorpe
2023-08-10 23:06     ` Suthikulpanit, Suravee
2023-08-11 13:06       ` Jason Gunthorpe
2023-08-08 10:02 ` [PATCH 02/11] iommu/amd: Introduce struct protection_domain.pd_mode Vasant Hegde
2023-08-08 15:30   ` Jason Gunthorpe
2023-08-11 10:04     ` Vasant Hegde
2023-08-11 13:21       ` Jason Gunthorpe
2023-08-08 10:02 ` [PATCH 03/11] iommu/amd: Introduce per-device GCR3 table Vasant Hegde
2023-08-08 15:32   ` Jason Gunthorpe
2023-08-10 23:31     ` Suthikulpanit, Suravee
2023-08-08 10:02 ` [PATCH 04/11] iommu/amd: Use protection_domain.flags to check page table mode Vasant Hegde
2023-08-08 15:35   ` Jason Gunthorpe
2023-08-11 10:10     ` Vasant Hegde
2023-08-08 10:02 ` [PATCH 05/11] iommu/amd: Refactor helper function for setting / clearing GCR3 Vasant Hegde
2023-08-08 10:02 ` [PATCH 06/11] iommu/amd: Refactor helper function for attaching / detaching device Vasant Hegde
2023-08-08 15:39   ` Jason Gunthorpe
2023-08-11 10:07     ` Vasant Hegde
2023-08-11 13:20       ` Jason Gunthorpe
2023-08-11 16:50         ` Vasant Hegde
2023-08-11 23:50           ` Jason Gunthorpe
2023-08-15  4:19             ` Tian, Kevin
2023-08-15  5:33             ` Suthikulpanit, Suravee
2023-08-15 11:42               ` Jason Gunthorpe
2023-08-08 10:02 ` [PATCH 07/11] iommu/amd: Refactor protection_domain helper functions Vasant Hegde
2023-08-08 10:02 ` [PATCH 08/11] iommu/amd: Refactor GCR3 table " Vasant Hegde
2023-08-08 10:02 ` [PATCH 09/11] iommu/amd: Introduce helper functions for AMD IOMMU v2 driver Vasant Hegde
2023-08-08 15:49   ` Jason Gunthorpe
2023-08-11  1:34     ` Suthikulpanit, Suravee
2023-08-11 13:17       ` Jason Gunthorpe [this message]
2023-08-11 16:51         ` Suthikulpanit, Suravee
2023-08-08 10:02 ` [PATCH 10/11] iommu/amd/iommu_v2: Add support to switch default domain to SVA mode Vasant Hegde
2023-08-08 15:51   ` Jason Gunthorpe
2023-08-08 10:02 ` [PATCH 11/11] iommu/amd: Remove unused GCR3 table parameters from struct protection_domain Vasant Hegde

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