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Date: Thu, 24 Sep 2026 13:42:44 +0200
From: Joerg Roedel <joro@8bytes.org>
To: Alex Deucher <alexander.deucher@amd.com>
Cc: Mario Limonciello <mario.limonciello@amd.com>, 
	amd-gfx@lists.freedesktop.org, Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>, 
	Vasant Hegde <vasant.hegde@amd.com>, Will Deacon <will@kernel.org>, 
	Robin Murphy <robin.murphy@arm.com>, "open list:AMD IOMMU (AMD-VI)" <iommu@lists.linux.dev>, 
	Jatin Kataria <jkataria@netflix.com>, Boqun Feng <boqunf@netflix.com>
Subject: Re: [PATCH v2 0/2] IOMMU Performance Optimization support
Message-ID: <arUMU5QGhb34exFV@8bytes.org>
References: <20260908041207.38113-1-mario.limonciello@amd.com>
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In-Reply-To: <20260908041207.38113-1-mario.limonciello@amd.com>

Hi Alex,

On Mon, Sep 07, 2026 at 11:12:05PM -0500, Mario Limonciello wrote:
> Mario Limonciello (2):
>   iommu/amd: Add PerfOpt IOMMU performance optimization support
>   drm/amdgpu: Enable PerfOpt IOMMU perf optimization when GPU in
>     identity domain
> 
>  drivers/gpu/drm/amd/amdgpu/amdgpu.h        |   1 +
>  drivers/gpu/drm/amd/amdgpu/amdgpu_device.c |  50 +++++
>  drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c    |  12 ++
>  drivers/iommu/amd/amd_iommu.h              |   3 +
>  drivers/iommu/amd/amd_iommu_types.h        |   7 +
>  drivers/iommu/amd/init.c                   |  43 +++++
>  drivers/iommu/amd/iommu.c                  | 214 +++++++++++++++++++++
>  include/linux/amd-iommu.h                  |  11 ++
>  8 files changed, 341 insertions(+)

What is your preference on what tree this should go through? The IOMMU changes
are bigger, so my preference is the iommu tree, but for that I need your Ack on
the GPU part. Or let me know whether you prefer this to go through your tree.

-Joerg