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From: John Hubbard <jhubbard@nvidia.com>
To: Alexandre Courbot <acourbot@nvidia.com>,
	Danilo Krummrich <dakr@kernel.org>
Cc: "Joel Fernandes" <joelagnelf@nvidia.com>,
	"Timur Tabi" <ttabi@nvidia.com>,
	"Alistair Popple" <apopple@nvidia.com>,
	"Edwin Peer" <epeer@nvidia.com>, "Zhi Wang" <zhiw@nvidia.com>,
	"David Airlie" <airlied@gmail.com>,
	"Simona Vetter" <simona@ffwll.ch>,
	"Bjorn Helgaas" <bhelgaas@google.com>,
	"Miguel Ojeda" <ojeda@kernel.org>,
	"Alex Gaynor" <alex.gaynor@gmail.com>,
	"Boqun Feng" <boqun.feng@gmail.com>,
	"Gary Guo" <gary@garyguo.net>,
	"Björn Roy Baron" <bjorn3_gh@protonmail.com>,
	"Benno Lossin" <lossin@kernel.org>,
	"Andreas Hindborg" <a.hindborg@kernel.org>,
	"Alice Ryhl" <aliceryhl@google.com>,
	"Trevor Gross" <tmgross@umich.edu>,
	nouveau@lists.freedesktop.org, rust-for-linux@vger.kernel.org,
	LKML <linux-kernel@vger.kernel.org>,
	Nouveau <nouveau-bounces@lists.freedesktop.org>
Subject: Re: [PATCH v5 3/3] gpu: nova-core: add boot42 support for next-gen GPUs
Date: Thu, 6 Nov 2025 16:15:21 -0800	[thread overview]
Message-ID: <fb96711a-54e0-406a-8938-721aaeaeb0b7@nvidia.com> (raw)
In-Reply-To: <c64e59cc-6a09-4107-8b98-f5f40a4b95c7@nvidia.com>

On 11/6/25 1:27 PM, John Hubbard wrote:
> On 11/5/25 11:24 PM, Alexandre Courbot wrote:
>> On Thu Nov 6, 2025 at 10:27 AM JST, John Hubbard wrote:
>>> +        // Rubin:
>>> +        //
>>> +        //     Only supported by Nova. Need to use boot42 to fully identify these GPUs.
> 
> Ohh, I scrambled the comment when I added Rubin to the discussion. Actually,
> the first sentence is correct, but the second is dead wrong. :)
> 
> Rubin will still key off of boot0.
> 

Correction, the dividing line for when this changes over turns out to
be mid-Rubin. So I'm looking at going back to "if later than
Fermi, use boot42" after all (Timur was advocating for that, earlier,
too.)


thanks,
-- 
John Hubbard


      reply	other threads:[~2025-11-07  0:15 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-11-06  1:27 [PATCH v5 0/3] gpu: nova: " John Hubbard
2025-11-06  1:27 ` [PATCH v5 1/3] gpu: nova-core: prepare Spec and Revision types for boot0/boot42 John Hubbard
2025-11-06  7:45   ` Alexandre Courbot
2025-11-06 21:12     ` John Hubbard
2025-11-06  1:27 ` [PATCH v5 2/3] gpu: nova-core: make Architecture behave as a u8 type John Hubbard
2025-11-06  1:27 ` [PATCH v5 3/3] gpu: nova-core: add boot42 support for next-gen GPUs John Hubbard
2025-11-06  7:24   ` Alexandre Courbot
2025-11-06 21:27     ` John Hubbard
2025-11-07  0:15       ` John Hubbard [this message]

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