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Tue, 7 Apr 2026 11:57:13 +0000 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Tue, 07 Apr 2026 12:57:13 +0100 Message-Id: Cc: "John Hubbard" , "Alistair Popple" , "Joel Fernandes" , "Timur Tabi" , , , Subject: Re: [PATCH v2] gpu: nova: require little endian From: "Gary Guo" To: "Eliot Courtney" , "Danilo Krummrich" , "Alexandre Courbot" , "Alice Ryhl" , "David Airlie" , "Simona Vetter" X-Mailer: aerc 0.21.0 References: <20260407-fix-kconfig-v2-1-6b4fb06c690c@nvidia.com> In-Reply-To: <20260407-fix-kconfig-v2-1-6b4fb06c690c@nvidia.com> X-ClientProxiedBy: LO2P123CA0091.GBRP123.PROD.OUTLOOK.COM (2603:10a6:600:139::6) To LOVP265MB8871.GBRP265.PROD.OUTLOOK.COM (2603:10a6:600:488::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LOVP265MB8871:EE_|CW1P265MB8564:EE_ X-MS-Office365-Filtering-Correlation-Id: 441b313f-71ac-4e29-a5b1-08de949cce9d X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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For > example, all the code that reads RPCs out of the command queue just > directly interprets the bytes. >=20 > Make this explicit in Kconfig. >=20 > Signed-off-by: Eliot Courtney Reviewed-by: Gary Guo > --- > The current code assumes little endian in a bunch of places. I think we > should either explicitly decide to be generic on endianness or explicitly > decide not to - having some handling sprinkled around in various > locations seems confusing to me. >=20 > I believe that currently e.g. `RUST` transitively depends on > !CPU_BIG_ENDIAN, so this is more about making the decision explicit for > nova-core rather than fixing any kind of hole. > --- > Changes in v2: > - Also add to nova-drm (Thanks Danilo) > - Did not take Reviewed-by + Acked-by because commit changed > substantively > - Link to v1: https://patch.msgid.link/20260406-fix-kconfig-v1-1-8f634499= f7f0@nvidia.com > --- > drivers/gpu/drm/nova/Kconfig | 1 + > drivers/gpu/nova-core/Kconfig | 1 + > 2 files changed, 2 insertions(+)