linux-kernel - Re: [PATCH 24/31] gpu: nova-core: Hopper/Blackwell: larger non-WPR heap

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Message-ID: <dd0cefae-49ab-4edb-a4c0-b7629f622cd2@nvidia.com>
Date: Fri, 23 Jan 2026 17:50:04 -0800
From: John Hubbard <jhubbard@...dia.com>
To: Gary Guo <gary@...yguo.net>, Danilo Krummrich <dakr@...nel.org>
Cc: Alexandre Courbot <acourbot@...dia.com>,
 Joel Fernandes <joelagnelf@...dia.com>, Timur Tabi <ttabi@...dia.com>,
 Alistair Popple <apopple@...dia.com>, Edwin Peer <epeer@...dia.com>,
 Zhi Wang <zhiw@...dia.com>, David Airlie <airlied@...il.com>,
 Simona Vetter <simona@...ll.ch>, Bjorn Helgaas <bhelgaas@...gle.com>,
 Miguel Ojeda <ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>,
 Boqun Feng <boqun.feng@...il.com>, Björn Roy Baron
 <bjorn3_gh@...tonmail.com>, Benno Lossin <lossin@...nel.org>,
 Andreas Hindborg <a.hindborg@...nel.org>, Alice Ryhl <aliceryhl@...gle.com>,
 Trevor Gross <tmgross@...ch.edu>, nouveau@...ts.freedesktop.org,
 rust-for-linux@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 24/31] gpu: nova-core: Hopper/Blackwell: larger non-WPR
 heap

On 1/21/26 8:18 AM, Gary Guo wrote:
> On Wed Dec 3, 2025 at 5:59 AM GMT, John Hubbard wrote:
...
>> +/// Calculate non-WPR heap size based on chipset architecture.
>> +/// This matches the logic used in FSP for consistency.
>> +pub(crate) fn calc_non_wpr_heap_size(chipset: Chipset) -> u64 {
>> +    if chipset.needs_large_reserved_mem() {
>> +        0x220000 // ~2.1MB for Hopper/Blackwell+
>> +    } else {
>> +        SZ_1M as u64 // 1MB for older architectures
>> +    }
>> +}
> 
> I think the patch that introduces the function should be merged with this one.
> 

Done.

thanks,
-- 
John Hubbard