linux-kernel - Re: [PATCH 0/1] drm/amdkfd: Fix unaligned doorbell absolute offset for gfx8

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Date:   Wed, 27 Sep 2023 21:55:13 +0530
From:   "Yadav, Arvind" <arvyadav@....com>
To:     Arvind Yadav <Arvind.Yadav@....com>, Christian.Koenig@....com,
        alexander.deucher@....com, shashank.sharma@....com,
        Xinhui.Pan@....com, airlied@...il.com, daniel@...ll.ch,
        Felix.Kuehling@....com
Cc:     amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/1] drm/amdkfd: Fix unaligned doorbell absolute offset
 for gfx8

Adding Felix.Kuehling@....com for review.

Thanks
~Arvind

On 9/27/2023 9:46 PM, Arvind Yadav wrote:
> On older chips, the absolute doorbell offset within
> the doorbell page is based on the queue ID.
> KFD is using queue ID and doorbell size to get an
> absolute doorbell offset in userspace.
>
> This patch is to adjust the absolute doorbell offset
> against the doorbell id considering the doorbell
> size of 32/64 bit.
>
> Arvind Yadav (1):
>    drm/amdkfd: Fix unaligned doorbell absolute offset for gfx8
>
>   drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c | 11 ++++++++++-
>   1 file changed, 10 insertions(+), 1 deletion(-)
>