From: "Alexandre Courbot" <acourbot@nvidia.com>
To: "Gary Guo" <gary@garyguo.net>
Cc: "Timur Tabi" <ttabi@nvidia.com>,
"Danilo Krummrich" <dakr@kernel.org>,
"John Hubbard" <jhubbard@nvidia.com>,
"Joel Fernandes" <joelagnelf@nvidia.com>,
"Eliot Courtney" <ecourtney@nvidia.com>,
<rust-for-linux@vger.kernel.org>
Subject: Re: [PATCH v2 4/6] gpu: nova-core: add FbHal::frts_size() for GA100 support
Date: Wed, 15 Apr 2026 22:57:47 +0900 [thread overview]
Message-ID: <DHTS5166DEXA.G18MTZS8U52V@nvidia.com> (raw)
In-Reply-To: <DHTRY8R0QQP7.18II4DQCILU5M@garyguo.net>
On Wed Apr 15, 2026 at 10:48 PM JST, Gary Guo wrote:
> On Wed Apr 15, 2026 at 12:50 AM BST, Timur Tabi wrote:
>> Introduce FbHal method frts_size() to return the size of the FRTS
>> window. GA100 is a special case in that there is no FRTS, and so
>> the size must be set to 0.
>>
>> Note that we cannot use supports_display() to determine the FRTS
>> size because there are other GPUs (e.g. GA102GL) that have display
>> disabled (and so supports_display() returns False), but the FRTS
>> window size still needs to be 1MB.
>
> Do we want to special case 0, or shoul we use `None` instead to represent that
> FRTS region dopes not exist?
This was discussed in [1] - using 0 seems to be the correct approach.
[1] https://lore.kernel.org/all/DHRQL0KVSETV.2YWE5W5JFGHJE@nvidia.com/
next prev parent reply other threads:[~2026-04-15 13:57 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-14 23:50 [PATCH v2 0/6] gpu: nova-core: add GA100 support Timur Tabi
2026-04-14 23:50 ` [PATCH v2 1/6] gpu: nova-core: use correct fwsignature for GA100 Timur Tabi
2026-04-15 13:45 ` Gary Guo
2026-04-15 16:45 ` Timur Tabi
2026-04-15 16:55 ` Gary Guo
2026-04-15 16:58 ` Timur Tabi
2026-04-14 23:50 ` [PATCH v2 2/6] gpu: nova-core: do not consider 0xBB77 as a valid PCI ROM header signature Timur Tabi
2026-04-14 23:50 ` [PATCH v2 3/6] gpu: nova-core: only boot FRTS if its region is allocated Timur Tabi
2026-04-15 4:33 ` Eliot Courtney
2026-04-14 23:50 ` [PATCH v2 4/6] gpu: nova-core: add FbHal::frts_size() for GA100 support Timur Tabi
2026-04-15 4:36 ` Eliot Courtney
2026-04-15 6:55 ` Alexandre Courbot
2026-04-15 13:48 ` Gary Guo
2026-04-15 13:57 ` Alexandre Courbot [this message]
2026-04-15 16:57 ` Gary Guo
2026-04-15 16:59 ` Timur Tabi
2026-04-14 23:50 ` [PATCH v2 5/6] gpu: nova-core: skip the IFR header if present Timur Tabi
2026-04-15 5:23 ` Eliot Courtney
2026-04-15 21:08 ` Timur Tabi
2026-04-16 0:00 ` Timur Tabi
2026-04-17 4:09 ` Alexandre Courbot
2026-04-15 6:54 ` Alexandre Courbot
2026-04-15 13:49 ` Gary Guo
2026-04-15 14:00 ` Alexandre Courbot
2026-04-14 23:50 ` [PATCH v2 6/6] gpu: nova-core: enable GA100 Timur Tabi
2026-04-15 13:51 ` Gary Guo
2026-04-15 16:43 ` Timur Tabi
2026-04-15 16:58 ` Gary Guo
2026-04-15 17:01 ` Timur Tabi
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