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GET /api/1.1/patches/2230016/?format=api
{ "id": 2230016, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2230016/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260429044752.4176397-3-alistair.francis@wdc.com/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/1.1/projects/14/?format=api", "name": "QEMU Development", "link_name": "qemu-devel", "list_id": "qemu-devel.nongnu.org", "list_email": "qemu-devel@nongnu.org", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<20260429044752.4176397-3-alistair.francis@wdc.com>", "date": "2026-04-29T04:47:03", "name": "[PULL,02/51] util: export CRC32[C] lookup tables", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "7da54f97a44613dfa0cb7a7718e166547c19d808", "submitter": { "id": 64571, "url": "http://patchwork.ozlabs.org/api/1.1/people/64571/?format=api", "name": "Alistair Francis", "email": "alistair23@gmail.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260429044752.4176397-3-alistair.francis@wdc.com/mbox/", "series": [ { "id": 501983, "url": "http://patchwork.ozlabs.org/api/1.1/series/501983/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=501983", "date": "2026-04-29T04:47:05", "name": "[PULL,01/51] hw/riscv/riscv-iommu: Use standard EN_PRI bit for PRI", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/501983/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2230016/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2230016/checks/", "tags": {}, "headers": { "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=h2hoh6s5;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; 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helo=mail-pl1-x630.google.com", "X-Spam_score_int": "-17", "X-Spam_score": "-1.8", "X-Spam_bar": "-", "X-Spam_report": "(-1.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1,\n DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001,\n RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001,\n SPF_PASS=-0.001 autolearn=ham autolearn_force=no", "X-Spam_action": "no action", "X-BeenThere": "qemu-devel@nongnu.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "qemu development <qemu-devel.nongnu.org>", "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>", "List-Archive": "<https://lists.nongnu.org/archive/html/qemu-devel>", "List-Post": "<mailto:qemu-devel@nongnu.org>", "List-Help": "<mailto:qemu-devel-request@nongnu.org?subject=help>", "List-Subscribe": "<https://lists.nongnu.org/mailman/listinfo/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=subscribe>", "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org", "Sender": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org" }, "content": "From: Emmanuel Blot <eblot@rivosinc.com>\n\nThese are needed for the xlrbr CRC32 instructions which pre-XOR the data\ninto the CRC state before the instruction is executed, making the zlib\ncrc32 and QEMU crc32c implementations inappropriate.\n\nhttps://github.com/riscv/riscv-bitmanip/releases/download/v0.93/bitmanip-0.93.pdf\n\nSigned-off-by: James Wainwright <james.wainwright@lowrisc.org>\nReviewed-by: Alistair Francis <alistair.francis@wdc.com>\nMessage-ID: <20260320134254.217123-2-james.wainwright@lowrisc.org>\nSigned-off-by: Alistair Francis <alistair.francis@wdc.com>\n---\n include/qemu/crc32.h | 14 ++++++++\n include/qemu/crc32c.h | 1 +\n util/crc32.c | 81 +++++++++++++++++++++++++++++++++++++++++++\n util/crc32c.c | 4 +--\n util/meson.build | 1 +\n 5 files changed, 99 insertions(+), 2 deletions(-)\n create mode 100644 include/qemu/crc32.h\n create mode 100644 util/crc32.c", "diff": "diff --git a/include/qemu/crc32.h b/include/qemu/crc32.h\nnew file mode 100644\nindex 0000000000..9824a8cb5d\n--- /dev/null\n+++ b/include/qemu/crc32.h\n@@ -0,0 +1,14 @@\n+/*\n+ * CRC32 Checksum\n+ *\n+ * Copyright (c) 2026 QEMU contributors\n+ *\n+ * SPDX-License-Identifier: GPL-2.0-or-later\n+ */\n+\n+#ifndef QEMU_CRC32_H\n+#define QEMU_CRC32_H\n+\n+extern const uint32_t crc32_table[256];\n+\n+#endif\ndiff --git a/include/qemu/crc32c.h b/include/qemu/crc32c.h\nindex 88b4d2b3b3..3d5ba189ef 100644\n--- a/include/qemu/crc32c.h\n+++ b/include/qemu/crc32c.h\n@@ -28,6 +28,7 @@\n #ifndef QEMU_CRC32C_H\n #define QEMU_CRC32C_H\n \n+extern const uint32_t crc32c_table[256];\n \n uint32_t crc32c(uint32_t crc, const uint8_t *data, unsigned int length);\n uint32_t iov_crc32c(uint32_t crc, const struct iovec *iov, size_t iov_cnt);\ndiff --git a/util/crc32.c b/util/crc32.c\nnew file mode 100644\nindex 0000000000..a0f91ff09c\n--- /dev/null\n+++ b/util/crc32.c\n@@ -0,0 +1,81 @@\n+/*\n+ * Constants for computing CRC32 checksums\n+ *\n+ * Copyright (c) 2026 QEMU contributors\n+ *\n+ * SPDX-License-Identifier: GPL-2.0-or-later\n+ */\n+\n+#include \"qemu/osdep.h\"\n+#include \"qemu/crc32.h\"\n+\n+/*\n+ * CRC-32 table (reversed; polynomial 0xEDB88320).\n+ */\n+\n+const uint32_t crc32_table[256] = {\n+ 0x00000000u, 0x77073096u, 0xee0e612cu, 0x990951bau,\n+ 0x076dc419u, 0x706af48fu, 0xe963a535u, 0x9e6495a3u,\n+ 0x0edb8832u, 0x79dcb8a4u, 0xe0d5e91eu, 0x97d2d988u,\n+ 0x09b64c2bu, 0x7eb17cbdu, 0xe7b82d07u, 0x90bf1d91u,\n+ 0x1db71064u, 0x6ab020f2u, 0xf3b97148u, 0x84be41deu,\n+ 0x1adad47du, 0x6ddde4ebu, 0xf4d4b551u, 0x83d385c7u,\n+ 0x136c9856u, 0x646ba8c0u, 0xfd62f97au, 0x8a65c9ecu,\n+ 0x14015c4fu, 0x63066cd9u, 0xfa0f3d63u, 0x8d080df5u,\n+ 0x3b6e20c8u, 0x4c69105eu, 0xd56041e4u, 0xa2677172u,\n+ 0x3c03e4d1u, 0x4b04d447u, 0xd20d85fdu, 0xa50ab56bu,\n+ 0x35b5a8fau, 0x42b2986cu, 0xdbbbc9d6u, 0xacbcf940u,\n+ 0x32d86ce3u, 0x45df5c75u, 0xdcd60dcfu, 0xabd13d59u,\n+ 0x26d930acu, 0x51de003au, 0xc8d75180u, 0xbfd06116u,\n+ 0x21b4f4b5u, 0x56b3c423u, 0xcfba9599u, 0xb8bda50fu,\n+ 0x2802b89eu, 0x5f058808u, 0xc60cd9b2u, 0xb10be924u,\n+ 0x2f6f7c87u, 0x58684c11u, 0xc1611dabu, 0xb6662d3du,\n+ 0x76dc4190u, 0x01db7106u, 0x98d220bcu, 0xefd5102au,\n+ 0x71b18589u, 0x06b6b51fu, 0x9fbfe4a5u, 0xe8b8d433u,\n+ 0x7807c9a2u, 0x0f00f934u, 0x9609a88eu, 0xe10e9818u,\n+ 0x7f6a0dbbu, 0x086d3d2du, 0x91646c97u, 0xe6635c01u,\n+ 0x6b6b51f4u, 0x1c6c6162u, 0x856530d8u, 0xf262004eu,\n+ 0x6c0695edu, 0x1b01a57bu, 0x8208f4c1u, 0xf50fc457u,\n+ 0x65b0d9c6u, 0x12b7e950u, 0x8bbeb8eau, 0xfcb9887cu,\n+ 0x62dd1ddfu, 0x15da2d49u, 0x8cd37cf3u, 0xfbd44c65u,\n+ 0x4db26158u, 0x3ab551ceu, 0xa3bc0074u, 0xd4bb30e2u,\n+ 0x4adfa541u, 0x3dd895d7u, 0xa4d1c46du, 0xd3d6f4fbu,\n+ 0x4369e96au, 0x346ed9fcu, 0xad678846u, 0xda60b8d0u,\n+ 0x44042d73u, 0x33031de5u, 0xaa0a4c5fu, 0xdd0d7cc9u,\n+ 0x5005713cu, 0x270241aau, 0xbe0b1010u, 0xc90c2086u,\n+ 0x5768b525u, 0x206f85b3u, 0xb966d409u, 0xce61e49fu,\n+ 0x5edef90eu, 0x29d9c998u, 0xb0d09822u, 0xc7d7a8b4u,\n+ 0x59b33d17u, 0x2eb40d81u, 0xb7bd5c3bu, 0xc0ba6cadu,\n+ 0xedb88320u, 0x9abfb3b6u, 0x03b6e20cu, 0x74b1d29au,\n+ 0xead54739u, 0x9dd277afu, 0x04db2615u, 0x73dc1683u,\n+ 0xe3630b12u, 0x94643b84u, 0x0d6d6a3eu, 0x7a6a5aa8u,\n+ 0xe40ecf0bu, 0x9309ff9du, 0x0a00ae27u, 0x7d079eb1u,\n+ 0xf00f9344u, 0x8708a3d2u, 0x1e01f268u, 0x6906c2feu,\n+ 0xf762575du, 0x806567cbu, 0x196c3671u, 0x6e6b06e7u,\n+ 0xfed41b76u, 0x89d32be0u, 0x10da7a5au, 0x67dd4accu,\n+ 0xf9b9df6fu, 0x8ebeeff9u, 0x17b7be43u, 0x60b08ed5u,\n+ 0xd6d6a3e8u, 0xa1d1937eu, 0x38d8c2c4u, 0x4fdff252u,\n+ 0xd1bb67f1u, 0xa6bc5767u, 0x3fb506ddu, 0x48b2364bu,\n+ 0xd80d2bdau, 0xaf0a1b4cu, 0x36034af6u, 0x41047a60u,\n+ 0xdf60efc3u, 0xa867df55u, 0x316e8eefu, 0x4669be79u,\n+ 0xcb61b38cu, 0xbc66831au, 0x256fd2a0u, 0x5268e236u,\n+ 0xcc0c7795u, 0xbb0b4703u, 0x220216b9u, 0x5505262fu,\n+ 0xc5ba3bbeu, 0xb2bd0b28u, 0x2bb45a92u, 0x5cb36a04u,\n+ 0xc2d7ffa7u, 0xb5d0cf31u, 0x2cd99e8bu, 0x5bdeae1du,\n+ 0x9b64c2b0u, 0xec63f226u, 0x756aa39cu, 0x026d930au,\n+ 0x9c0906a9u, 0xeb0e363fu, 0x72076785u, 0x05005713u,\n+ 0x95bf4a82u, 0xe2b87a14u, 0x7bb12baeu, 0x0cb61b38u,\n+ 0x92d28e9bu, 0xe5d5be0du, 0x7cdcefb7u, 0x0bdbdf21u,\n+ 0x86d3d2d4u, 0xf1d4e242u, 0x68ddb3f8u, 0x1fda836eu,\n+ 0x81be16cdu, 0xf6b9265bu, 0x6fb077e1u, 0x18b74777u,\n+ 0x88085ae6u, 0xff0f6a70u, 0x66063bcau, 0x11010b5cu,\n+ 0x8f659effu, 0xf862ae69u, 0x616bffd3u, 0x166ccf45u,\n+ 0xa00ae278u, 0xd70dd2eeu, 0x4e048354u, 0x3903b3c2u,\n+ 0xa7672661u, 0xd06016f7u, 0x4969474du, 0x3e6e77dbu,\n+ 0xaed16a4au, 0xd9d65adcu, 0x40df0b66u, 0x37d83bf0u,\n+ 0xa9bcae53u, 0xdebb9ec5u, 0x47b2cf7fu, 0x30b5ffe9u,\n+ 0xbdbdf21cu, 0xcabac28au, 0x53b39330u, 0x24b4a3a6u,\n+ 0xbad03605u, 0xcdd70693u, 0x54de5729u, 0x23d967bfu,\n+ 0xb3667a2eu, 0xc4614ab8u, 0x5d681b02u, 0x2a6f2b94u,\n+ 0xb40bbe37u, 0xc30c8ea1u, 0x5a05df1bu, 0x2d02ef8du\n+};\ndiff --git a/util/crc32c.c b/util/crc32c.c\nindex ea7f345de8..f40597f80d 100644\n--- a/util/crc32c.c\n+++ b/util/crc32c.c\n@@ -1,7 +1,7 @@\n /*\n * Castagnoli CRC32C Checksum Algorithm\n *\n- * Polynomial: 0x11EDC6F41\n+ * Polynomial: 0x1EDC6F41\n *\n * Castagnoli93: Guy Castagnoli and Stefan Braeuer and Martin Herrman\n * \"Optimization of Cyclic Redundancy-Check Codes with 24\n@@ -37,7 +37,7 @@\n * reflect output bytes = true\n */\n \n-static const uint32_t crc32c_table[256] = {\n+const uint32_t crc32c_table[256] = {\n 0x00000000L, 0xF26B8303L, 0xE13B70F7L, 0x1350F3F4L,\n 0xC79A971FL, 0x35F1141CL, 0x26A1E7E8L, 0xD4CA64EBL,\n 0x8AD958CFL, 0x78B2DBCCL, 0x6BE22838L, 0x9989AB3BL,\ndiff --git a/util/meson.build b/util/meson.build\nindex 8bed0267c0..e29cbd948a 100644\n--- a/util/meson.build\n+++ b/util/meson.build\n@@ -45,6 +45,7 @@ util_ss.add(files('id.c'))\n util_ss.add(files('qemu-config.c', 'notify.c'))\n util_ss.add(files('qemu-option.c', 'qemu-progress.c'))\n util_ss.add(files('keyval.c'))\n+util_ss.add(files('crc32.c'))\n util_ss.add(files('crc32c.c'))\n util_ss.add(files('uuid.c'))\n util_ss.add(files('getauxval.c'))\n", "prefixes": [ "PULL", "02/51" ] }