From: "Alexandre Courbot" <acourbot@nvidia.com>
To: "Yury Norov" <ynorov@nvidia.com>
Cc: "Eliot Courtney" <ecourtney@nvidia.com>,
"Alice Ryhl" <aliceryhl@google.com>,
"Burak Emir" <burak.emir@gmail.com>,
"Yury Norov" <yury.norov@gmail.com>,
"Miguel Ojeda" <ojeda@kernel.org>,
"Boqun Feng" <boqun@kernel.org>, "Gary Guo" <gary@garyguo.net>,
"Björn Roy Baron" <bjorn3_gh@protonmail.com>,
"Benno Lossin" <lossin@kernel.org>,
"Andreas Hindborg" <a.hindborg@kernel.org>,
"Trevor Gross" <tmgross@umich.edu>,
"Danilo Krummrich" <dakr@kernel.org>,
"Daniel Almeida" <daniel.almeida@collabora.com>,
"Tamir Duberstein" <tamird@kernel.org>,
"Onur Özkan" <work@onurozkan.dev>,
"David Airlie" <airlied@gmail.com>,
"Simona Vetter" <simona@ffwll.ch>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"John Hubbard" <jhubbard@nvidia.com>,
"Alistair Popple" <apopple@nvidia.com>,
"Timur Tabi" <ttabi@nvidia.com>, "Zhi Wang" <zhiw@nvidia.com>,
rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org,
nova-gpu@lists.linux.dev, dri-devel@lists.freedesktop.org
Subject: Re: [PATCH v11 4/5] rust: id_pool: do not round capacity up to BitmapVec::MAX_INLINE_LEN
Date: Thu, 12 Nov 2026 22:35:51 +0900 [thread overview]
Message-ID: <DMT9T6GSVEK2.32Y81TG3H5927@nvidia.com> (raw)
In-Reply-To: <avTUWznKqpgUI5M-@yury>
On Thu Nov 12, 2026 at 5:47 AM JST, Yury Norov wrote:
>> Forbidding zero-sized pools would actually require *more* code in this
>> patch to enforce that rule, and would not allow us to remove any in
>> exchange afaict.
>
> I trust you here. Maybe declaring nbits in the allocation API as
> NonZero would help - IDK... I just want to make sure we're not
> bloating the implementation for unneeded and confusing functionality.
I think the current code is pretty much as simple as we can make it for
our use-case.
Of course we can always tune it and even update the API if we find out
it doesn't work as well as we thought, or that allowing zero-sized pools
create issues. But if we forbid them preemptively we would actually be
adding more complexity, which makes me think the current approach looks
right.
next prev parent reply other threads:[~2026-11-12 13:36 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-09 8:32 [PATCH v11 0/5] rust: Add support for reserving of ranges of IDs Eliot Courtney
2026-11-09 8:32 ` [PATCH v11 1/5] rust: io: use Alignment size constants Eliot Courtney
2026-11-09 12:37 ` Gary Guo
2026-11-10 17:17 ` Yury Norov
2026-11-09 8:32 ` [PATCH v11 2/5] rust: gpu: buddy: " Eliot Courtney
2026-11-09 12:37 ` Gary Guo
2026-11-10 17:21 ` Yury Norov
2026-11-09 8:32 ` [PATCH v11 3/5] gpu: nova-core: " Eliot Courtney
2026-11-09 12:37 ` Gary Guo
2026-11-10 17:22 ` Yury Norov
2026-11-09 8:32 ` [PATCH v11 4/5] rust: id_pool: do not round capacity up to BitmapVec::MAX_INLINE_LEN Eliot Courtney
2026-11-09 12:08 ` Alexandre Courbot
2026-11-09 12:36 ` Gary Guo
2026-11-10 7:29 ` Eliot Courtney
2026-11-10 17:42 ` Yury Norov
2026-11-10 22:44 ` Alexandre Courbot
2026-11-11 20:47 ` Yury Norov
2026-11-12 13:35 ` Alexandre Courbot [this message]
2026-11-09 8:32 ` [PATCH v11 5/5] gpu: nova-core: add ChannelIdPool Eliot Courtney
2026-11-09 21:21 ` (subset) [PATCH v11 0/5] rust: Add support for reserving of ranges of IDs Danilo Krummrich
2026-11-09 21:33 ` Danilo Krummrich
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