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GET /api/1.2/patches/2225871/?format=api
{ "id": 2225871, "url": "http://patchwork.ozlabs.org/api/1.2/patches/2225871/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260421-mips-octeon-missing-insns-v2-v2-2-a0791df188c9@gmail.com/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/1.2/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": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260421-mips-octeon-missing-insns-v2-v2-2-a0791df188c9@gmail.com>", "list_archive_url": null, "date": "2026-04-21T17:27:29", "name": "[v2,02/13] target/mips: fix Octeon arithmetic destination handling", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "a43b20758bc73fa8331a4a341fe03f2ea7de94ad", "submitter": { "id": 66301, "url": "http://patchwork.ozlabs.org/api/1.2/people/66301/?format=api", "name": "James Hilliard", "email": "james.hilliard1@gmail.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260421-mips-octeon-missing-insns-v2-v2-2-a0791df188c9@gmail.com/mbox/", "series": [ { "id": 500858, "url": "http://patchwork.ozlabs.org/api/1.2/series/500858/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=500858", "date": "2026-04-21T17:27:27", "name": "target/mips: add missing Octeon user-mode support", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/500858/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2225871/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2225871/checks/", "tags": {}, "related": [], "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=BGOc3Edi;\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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charset=\"utf-8\"", "Content-Transfer-Encoding": "8bit", "Message-Id": "\n <20260421-mips-octeon-missing-insns-v2-v2-2-a0791df188c9@gmail.com>", "References": "\n <20260421-mips-octeon-missing-insns-v2-v2-0-a0791df188c9@gmail.com>", "In-Reply-To": "\n <20260421-mips-octeon-missing-insns-v2-v2-0-a0791df188c9@gmail.com>", "To": "qemu-devel@nongnu.org", "Cc": "Laurent Vivier <laurent@vivier.eu>,\n Pierrick Bouvier <pierrick.bouvier@linaro.org>, =?utf-8?q?Philippe_Mathieu?=\n\t=?utf-8?q?-Daud=C3=A9?= <philmd@linaro.org>,\n Aurelien Jarno <aurelien@aurel32.net>,\n Jiaxun Yang <jiaxun.yang@flygoat.com>,\n Aleksandar Rikalo <arikalo@gmail.com>, Huacai Chen <chenhuacai@kernel.org>,\n James Hilliard <james.hilliard1@gmail.com>", "X-Mailer": "b4 0.15.2", "Received-SPF": "pass client-ip=2001:4860:4864:20::2b;\n envelope-from=james.hilliard1@gmail.com; helo=mail-oa1-x2b.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": "BADDU and DMUL write their results to rd, not rt. Avoid treating rt ==\n$zero as a nop, and route writes through gen_store_gpr() so rd == $zero\nis handled consistently.\n\nSigned-off-by: James Hilliard <james.hilliard1@gmail.com>\n---\nChanges v1 -> v2:\n - Split the BADDU/DMUL destination handling fix out of the Octeon\n arithmetic instruction patch. (suggested by Philippe Mathieu-Daudé)\n---\n target/mips/tcg/octeon_translate.c | 12 +++++++-----\n 1 file changed, 7 insertions(+), 5 deletions(-)", "diff": "diff --git a/target/mips/tcg/octeon_translate.c b/target/mips/tcg/octeon_translate.c\nindex b2eca29e06..41e0d770f5 100644\n--- a/target/mips/tcg/octeon_translate.c\n+++ b/target/mips/tcg/octeon_translate.c\n@@ -45,7 +45,7 @@ static bool trans_BADDU(DisasContext *ctx, arg_BADDU *a)\n {\n TCGv t0, t1;\n \n- if (a->rt == 0) {\n+ if (a->rd == 0) {\n /* nop */\n return true;\n }\n@@ -55,8 +55,9 @@ static bool trans_BADDU(DisasContext *ctx, arg_BADDU *a)\n gen_load_gpr(t0, a->rs);\n gen_load_gpr(t1, a->rt);\n \n- tcg_gen_add_tl(t0, t0, t1);\n- tcg_gen_andi_i64(cpu_gpr[a->rd], t0, 0xff);\n+ tcg_gen_add_i64(t0, t0, t1);\n+ tcg_gen_andi_i64(t0, t0, 0xff);\n+ gen_store_gpr(t0, a->rd);\n return true;\n }\n \n@@ -64,7 +65,7 @@ static bool trans_DMUL(DisasContext *ctx, arg_DMUL *a)\n {\n TCGv t0, t1;\n \n- if (a->rt == 0) {\n+ if (a->rd == 0) {\n /* nop */\n return true;\n }\n@@ -74,7 +75,8 @@ static bool trans_DMUL(DisasContext *ctx, arg_DMUL *a)\n gen_load_gpr(t0, a->rs);\n gen_load_gpr(t1, a->rt);\n \n- tcg_gen_mul_i64(cpu_gpr[a->rd], t0, t1);\n+ tcg_gen_mul_i64(t0, t0, t1);\n+ gen_store_gpr(t0, a->rd);\n return true;\n }\n \n", "prefixes": [ "v2", "02/13" ] }