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From:   Jordan Justen <jordan.l.justen@intel.com>
To:     Ramalingam C <ramalingam.c@intel.com>,
        Robert Beckett <bob.beckett@collabora.com>
Cc:     Jani Nikula <jani.nikula@linux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@linux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@intel.com>,
        Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>,
        David Airlie <airlied@linux.ie>,
        Daniel Vetter <daniel@ffwll.ch>,
        Matthew Auld <matthew.auld@intel.com>,
        Thomas =?utf-8?Q?Hellstr=C3=B6m?= 
        <thomas.hellstrom@linux.intel.com>,
        Simon Ser <contact@emersion.fr>,
        Pekka Paalanen <ppaalanen@gmail.com>,
        Kenneth Graunke <kenneth@whitecape.org>,
        mesa-dev@lists.freedesktop.org, Tony Ye <tony.ye@intel.com>,
        Slawomir Milczarek <slawomir.milczarek@intel.com>,
        intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH v8 5/5] drm/i915/uapi: document behaviour for DG2 64K
 support
In-Reply-To: <20220218185540.GA7762@intel.com>
References: <20220208203419.1094362-1-bob.beckett@collabora.com>
 <20220208203419.1094362-6-bob.beckett@collabora.com>
 <87ee40ojpc.fsf@jljusten-skl> <20220218134735.GB3646@intel.com>
 <78df4b73-9b2d-670b-a6b0-a45b476f1f0a@collabora.com>
 <20220218185540.GA7762@intel.com>
Date:   Fri, 18 Feb 2022 11:42:23 -0800
Message-ID: <875ypcneqo.fsf@jljusten-skl>
MIME-Version: 1.0
Content-Type: text/plain
Precedence: bulk

Ramalingam C <ramalingam.c@intel.com> writes:

> On 2022-02-18 at 18:06:00 +0000, Robert Beckett wrote:
>> 
>> If desired, we can make the wording clearer, maybe something like:
>> 
>> "To keep things simple for userland, we mandate that any GTT mappings
>> must be aligned to 2MB. The kernel will internally pad them out to the next
>> 2MB boundary"
>
> Added the extra information in next version @
> https://patchwork.freedesktop.org/patch/475166/?series=100419&rev=1
>
> Jordan, hope this explanation clears your doubt.

Ok. It sounds like what we are doing in Mesa matches what is required by
hardware and the kernel. Thanks.

-Jordan