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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?mE/DZb0D3m6gJIoqFtH8YOesn7axENywX1DKg1y2MuJqt88o/53xn7+Kbubn?= =?us-ascii?Q?QKaStjFmortynNilvZdR8trJu2TJ0sx/FJtmFg9SYB6TUMX1u5DXDz5Fe0qX?= =?us-ascii?Q?K7otKLNLO1ODZ/FqKWA+o4dli+5o1TeC+ZfEBDaoPsYm7VFAXJas3soRe1Oh?= =?us-ascii?Q?fxw8eJtoA1WrKtGvYaN96mJOrVzB7aaoykDCg9VLi2NkWrrz2XuxOGFkzDMl?= =?us-ascii?Q?wv5SPtvbMp4vnJWUYXPpjtxmGfMkgtoqvf/u/1hEGtCd6CS/W5ErQGy4C/53?= =?us-ascii?Q?tU+2iZ/NwbegSpxo5dnF+13HhsZJWJZFgBWPK+rpG94L2Q3wohsWbYPToVO8?= =?us-ascii?Q?xc5lP6L+I7QZ1NeZKXdpQkHYPwrqAFA15dl9AmXv34lHsoyOsJT5/0FFBlFk?= =?us-ascii?Q?mwnRWAQaIxnwa77lhw7XChmhEsyGtbBCkSnnklOpSDQbUKFcBSRCzh8MslrG?= =?us-ascii?Q?9VoBjSpVVmp8a4m/R+jIl1YcOKqmEQ0QlorhJ31SVHsRqmuWuRq8R0gVzNJ5?= =?us-ascii?Q?LtPVE3K4joSmL4ZsLS7WENZTFgTKCupoxzGEUa15YtV1wHWnymNhmtkMzIDg?= =?us-ascii?Q?BFGPwJtwQeUi2ahIZgV5JRVPuVbqlIDPuK3a0z+OK/aBJpIAVhk9MSsr9WAE?= =?us-ascii?Q?HQR35pOI9pBX0YZSJlBmFhkRbPpZ0E8O81L0XihbyCqFL6V5vESXNlpriTjO?= =?us-ascii?Q?r/wdFjz5BSHhhoeHMzl5uEwtgsJv0EnX7R2/qpgZ3UoGQU7+gfKnQUBqZMcf?= =?us-ascii?Q?Wn9WTLG/SvoQhMhLyy6LsHFVzTgrq00Cr6F1qGnK10mylo1jcKATF3WuQyjC?= =?us-ascii?Q?7Dzj2TZvkCWdetJjBSiO1jnSjY6Gug7hfcNe6bpJ/EvTBtdk0om0yaT2WmV7?= =?us-ascii?Q?GCwq/+UuIsWUoB2Lf+M0CHojO57QSWwVlEnj9UM3R4sApWGRIuBPKW2Y8VDh?= =?us-ascii?Q?zdnLkLjcRu997tewA2/9jqHHAaVYSwyY6ZXzM6A0sEXOfo/yAbSa95OegnaZ?= =?us-ascii?Q?sXXiZQ3dMIdX4Xfs49HhdVgH/ZhZsXB/xRWH2d//z+0SCyykHYdYzQ71xk2H?= =?us-ascii?Q?qicNdx+tkTdx5Q6oIIraz1iziVQV6bdnGb6MIZ+nLMSu4zbaNRWeGhlKdC7+?= =?us-ascii?Q?zSW0+9dDvSGaDaeEZs/bdjPPmebb+xjOUESjvQP0fRlp7rckvoQF8w7Nw34I?= =?us-ascii?Q?6QUZFRn4zhZdHTDXAuSUrTe/eaK0rhY6MINSSHKAZzUqCVFfExZT5O8qvBSG?= =?us-ascii?Q?AdZBolzZjvQxoSr4CXTFdkGQQwc5pRXJexwlMZFc6exkLfFT/EvlfY1RFYm/?= =?us-ascii?Q?KpBieX7mPGXbKvb3/S/Oo1HkSf3Yg2BDateCoRNleBF2pYBnO5AkZ96SK8op?= =?us-ascii?Q?Kr/yt8Hjo72XvHICOqsoQ2rv5LqLiT1f9AD3/aJ1bND10ANBPTqlvZo0oY3k?= =?us-ascii?Q?06wnGZ1j3v8UYmYzClbZdNsf0Xu9W+43DNIRR4tSfDbZBJH3xpBZWWP6MhJq?= =?us-ascii?Q?2nCZMaKM/2HwTA0Q12ZXFsFdu/EMsjCNd/cc26gg2fAhUje+gXe3esQP7t/o?= =?us-ascii?Q?uCxPq/TiKVTLHhZ39WZBmLIzXrdDxPC3sRxbqMvA6J1O45DyIucosGCjx+xI?= =?us-ascii?Q?rGFOEvAQo37FMisBqP146LQwTqXEKxbvshGb7UAHIcMTZpQFFJH+O8P24wpI?= =?us-ascii?Q?Vum3weIw+extmaeYEyjSPxAswnk8FJguFNb2qTaFIykGPu8vivyO3D1B9yPX?= =?us-ascii?Q?LrrrUAkk4ZDliuxAE0/vFkUtmB7kMu3l+R47jonrp29HRgY/pTkx?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 76022949-ffbe-49fa-e612-08de9c9ba5fb X-MS-Exchange-CrossTenant-AuthSource: CY8PR12MB8300.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 17 Apr 2026 16:09:05.3956 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: uPyv+SEYOENQdYeo0LZC7fOCKC/rOV0HOcAVIrz/qzxKVu9fmt3y9nv/RGBZ7+fojPb749zUo89CVuYB+Lh84g== X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY1PR12MB9558 On Fri, Apr 17, 2026 at 05:31:00PM +0800, Jinjie Ruan wrote: > Add bitrev.h file to support rev8 and brev8 for riscv. > > Tested functionally on riscv64 QEMU with: > "-M virt,acpi=on,zbkb=true,zbb=true" > > Changes in v3: > - Fix the build issue by remving the CONFIG_HAVE_ARCH_BITREVERSE macro > for byte_rev_table. No arch needs byte_rev_table, except risc-v under a very certain configuration. Please find a better approach that wouldn't bloat random victims' .data section. > - Update the riscv implementation as David suggested. > - Add Reviwed-by. > > Changes in v2: > - Define generic __bitrev8/16/32 for reuse in riscv. > > Jinjie Ruan (2): > bitops: Define generic __bitrev8/16/32 for reuse > arch/riscv: Add bitrev.h file to support rev8 and brev8 > > arch/riscv/Kconfig | 1 + > arch/riscv/include/asm/bitrev.h | 55 +++++++++++++++++++++++++++ > include/asm-generic/bitops/__bitrev.h | 22 +++++++++++ > include/linux/bitrev.h | 20 ++-------- > lib/bitrev.c | 3 -- > 5 files changed, 82 insertions(+), 19 deletions(-) > create mode 100644 arch/riscv/include/asm/bitrev.h > create mode 100644 include/asm-generic/bitops/__bitrev.h > > -- > 2.34.1