From: Timur Tabi <ttabi@nvidia.com>
To: "dakr@kernel.org" <dakr@kernel.org>, John Hubbard <jhubbard@nvidia.com>
Cc: "lossin@kernel.org" <lossin@kernel.org>,
"a.hindborg@kernel.org" <a.hindborg@kernel.org>,
"boqun.feng@gmail.com" <boqun.feng@gmail.com>,
Zhi Wang <zhiw@nvidia.com>, "simona@ffwll.ch" <simona@ffwll.ch>,
"tmgross@umich.edu" <tmgross@umich.edu>,
"alex.gaynor@gmail.com" <alex.gaynor@gmail.com>,
"nouveau@lists.freedesktop.org" <nouveau@lists.freedesktop.org>,
"ojeda@kernel.org" <ojeda@kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"rust-for-linux@vger.kernel.org" <rust-for-linux@vger.kernel.org>,
"bjorn3_gh@protonmail.com" <bjorn3_gh@protonmail.com>,
Edwin Peer <epeer@nvidia.com>,
"airlied@gmail.com" <airlied@gmail.com>,
"aliceryhl@google.com" <aliceryhl@google.com>,
"bhelgaas@google.com" <bhelgaas@google.com>,
Joel Fernandes <joelagnelf@nvidia.com>,
Alexandre Courbot <acourbot@nvidia.com>,
"gary@garyguo.net" <gary@garyguo.net>,
Alistair Popple <apopple@nvidia.com>
Subject: Re: [PATCH v3 2/2] gpu: nova-core: add boot42 support for next-gen GPUs
Date: Thu, 30 Oct 2025 14:22:27 +0000 [thread overview]
Message-ID: <18f013a69371ecd86783d09f73c7fb66d860e7df.camel@nvidia.com> (raw)
In-Reply-To: <a1622011-6c86-4052-a808-31553e0b4916@nvidia.com>
On Wed, 2025-10-29 at 22:30 -0700, John Hubbard wrote:
> However, I don't want anyone to have to risk reading boot42 on some
> ancient GPU (earlier than Fermi, even), with uncertain results.
>
> And our HW team has promised to leave behind arch0==0, arch1==1 in
> in boot0, more or less forever, specifically to help us out here.
>
> With that in mind, I *do* want to read boot0 for the forseeable future,
> as a guide to whether to look at boot42. I really think that is the
> way to thread the needle here.
Sure, and this is exactly what is_ancient_gpu() does. It tells you whether to use boot42
instead of boot0. It is the only function that looks at boot0.
next prev parent reply other threads:[~2025-10-30 14:22 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-29 3:03 [PATCH v3 0/2] gpu: nova: add boot42 support for next-gen GPUs John Hubbard
2025-10-29 3:03 ` [PATCH v3 1/2] gpu: nova-core: prepare Spec and Revision types for boot0/boot42 John Hubbard
2025-10-29 3:03 ` [PATCH v3 2/2] gpu: nova-core: add boot42 support for next-gen GPUs John Hubbard
2025-10-29 11:26 ` Danilo Krummrich
2025-10-29 13:54 ` Alexandre Courbot
2025-10-30 0:37 ` John Hubbard
2025-10-30 0:54 ` Alexandre Courbot
2025-10-30 1:09 ` John Hubbard
2025-10-30 0:29 ` John Hubbard
2025-10-30 0:31 ` Timur Tabi
2025-10-30 0:35 ` John Hubbard
2025-10-30 1:01 ` Timur Tabi
2025-10-30 1:07 ` John Hubbard
2025-10-30 1:13 ` John Hubbard
2025-10-30 1:44 ` Timur Tabi
2025-10-30 5:30 ` John Hubbard
2025-10-30 14:22 ` Timur Tabi [this message]
2025-10-30 14:45 ` Danilo Krummrich
2025-10-29 14:05 ` Alexandre Courbot
2025-10-31 0:04 ` John Hubbard
2025-11-02 0:34 ` John Hubbard
2025-11-02 2:41 ` Alexandre Courbot
2025-11-02 3:33 ` John Hubbard
2025-11-08 1:55 ` Alexandre Courbot
2025-11-08 2:03 ` John Hubbard
2025-10-29 15:02 ` Timur Tabi
2025-10-29 23:15 ` John Hubbard
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