Cover Letter Detail
Show a cover letter.
GET /api/1.1/covers/2227703/?format=api
{ "id": 2227703, "url": "http://patchwork.ozlabs.org/api/1.1/covers/2227703/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/cover/20260424054742.45832-1-mkchauras@gmail.com/", "project": { "id": 2, "url": "http://patchwork.ozlabs.org/api/1.1/projects/2/?format=api", "name": "Linux PPC development", "link_name": "linuxppc-dev", "list_id": "linuxppc-dev.lists.ozlabs.org", "list_email": "linuxppc-dev@lists.ozlabs.org", "web_url": "https://github.com/linuxppc/wiki/wiki", "scm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git", "webscm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/" }, "msgid": "<20260424054742.45832-1-mkchauras@gmail.com>", "date": "2026-04-24T05:47:35", "name": "[V13,0/7] Rust support for powerpc", "submitter": { "id": 92575, "url": "http://patchwork.ozlabs.org/api/1.1/people/92575/?format=api", "name": "Mukesh Kumar Chaurasiya", "email": "mkchauras@gmail.com" }, "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/cover/20260424054742.45832-1-mkchauras@gmail.com/mbox/", "series": [ { "id": 501303, "url": "http://patchwork.ozlabs.org/api/1.1/series/501303/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=501303", "date": "2026-04-24T05:47:35", "name": "Rust support for powerpc", "version": 13, "mbox": "http://patchwork.ozlabs.org/series/501303/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/covers/2227703/comments/", "headers": { "Return-Path": "\n <linuxppc-dev+bounces-20034-incoming=patchwork.ozlabs.org@lists.ozlabs.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linuxppc-dev@lists.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=saPKta14;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org\n (client-ip=112.213.38.117; helo=lists.ozlabs.org;\n envelope-from=linuxppc-dev+bounces-20034-incoming=patchwork.ozlabs.org@lists.ozlabs.org;\n receiver=patchwork.ozlabs.org)", "lists.ozlabs.org;\n arc=none smtp.remote-ip=\"2607:f8b0:4864:20::636\"", "lists.ozlabs.org;\n dmarc=pass (p=none dis=none) header.from=gmail.com", "lists.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=saPKta14;\n\tdkim-atps=neutral", "lists.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=gmail.com\n (client-ip=2607:f8b0:4864:20::636; helo=mail-pl1-x636.google.com;\n envelope-from=mkchauras@gmail.com; receiver=lists.ozlabs.org)" ], "Received": [ "from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519 server-signature ECDSA (secp384r1 raw public key)\n server-digest SHA384)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4g22793yC0z1yDD\n\tfor <incoming@patchwork.ozlabs.org>; Fri, 24 Apr 2026 15:48:03 +1000 (AEST)", "from boromir.ozlabs.org (localhost [127.0.0.1])\n\tby lists.ozlabs.org (Postfix) with ESMTP id 4g22773MG6z2xwH;\n\tFri, 24 Apr 2026 15:48:03 +1000 (AEST)", "from mail-pl1-x636.google.com (mail-pl1-x636.google.com\n [IPv6:2607:f8b0:4864:20::636])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519 server-signature RSA-PSS (2048 bits) server-digest\n SHA256)\n\t(No client certificate requested)\n\tby lists.ozlabs.org (Postfix) with ESMTPS id 4g22754SVQz2xfR\n\tfor <linuxppc-dev@lists.ozlabs.org>; Fri, 24 Apr 2026 15:48:01 +1000 (AEST)", "by mail-pl1-x636.google.com with SMTP id\n d9443c01a7336-2a871daa98fso49354215ad.1\n for <linuxppc-dev@lists.ozlabs.org>;\n Thu, 23 Apr 2026 22:48:01 -0700 (PDT)", "from li-1a3e774c-28e4-11b2-a85c-acc9f2883e29.bl1-in.ibm.com\n ([129.41.58.4])\n by smtp.gmail.com with ESMTPSA id\n d9443c01a7336-2b5faa176e9sm208778245ad.20.2026.04.23.22.47.48\n (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);\n Thu, 23 Apr 2026 22:47:58 -0700 (PDT)" ], "ARC-Seal": "i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1777009683;\n\tcv=none;\n b=Q4qntf4Pq0PHzPt5wI3t1YD8532+rrNx8XdCJ2a1iATg7MvymJTj1czzl1QkKSZ+yuUEvvj2IDXHZfroV3XiiwNUusIfS4WxG43QPYw+OAtRGY8TF/cSiHlMzufB0hMQ8CefCRBV57iYzpiZgcgG9Mqb90E3jnrrAzOf8S98YUBOvYelgm3iKneAPTP0SOVrwG9dZSaq7JqegRmXFN+H/Ejr8/vWBnGPGK3yUrmCpyleUCFXbKHZgoFZlMNjkfnf6+hvYXjBmzdeaYk3nj51F77K9xmxrllxLDHYp8mXA8aJVx/PPpGMSgs0AZQcsAWY2WjS4N17uuWZhNJy09pT7g==", "ARC-Message-Signature": "i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707;\n\tt=1777009683; c=relaxed/relaxed;\n\tbh=Q7M2fwY604nxmRG1YIO02Z14fgzwwg1Pa67qHupVFxk=;\n\th=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type;\n b=Cup1YoG+Y17u6llAJVF1CfNnebjOX83tj+BnlWuKhr4iXT4HrXd2gZRuzL+Z3xhB8c/qeeJ769RxBKXuu8thx4i3a9x5V2M1wuuocujWwfgjCAoF6nBMzz6EaYtMv1T8XTXQ2Q5Ga7KV04cCEOiVLuxdy3KHbYAQQ5gxRDwqflMgYBWCE7z5vMGQIMn11+Bs5ARM+/mV7BsDbBW3CmTgRSjpxeYJYDxqwA1LYg0sVVi26yEMq3Aqsm7Hcune3bC5jd5emKfFw7No2S/XP36Q/byF7iFz7DoE9DTuIMcuvJzUkignl5HFJR8xRt7vJePc0jNIA9IXO59CIlD+m5+Tog==", "ARC-Authentication-Results": "i=1; lists.ozlabs.org;\n dmarc=pass (p=none dis=none) header.from=gmail.com; dkim=pass (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=saPKta14; dkim-atps=neutral;\n spf=pass (client-ip=2607:f8b0:4864:20::636; helo=mail-pl1-x636.google.com;\n envelope-from=mkchauras@gmail.com;\n receiver=lists.ozlabs.org) smtp.mailfrom=gmail.com", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n d=gmail.com; s=20251104; t=1777009679; x=1777614479;\n darn=lists.ozlabs.org;\n h=content-transfer-encoding:mime-version:message-id:date:subject:to\n :from:from:to:cc:subject:date:message-id:reply-to;\n bh=Q7M2fwY604nxmRG1YIO02Z14fgzwwg1Pa67qHupVFxk=;\n b=saPKta14ZHnIR27uUqMiMxhlxVC5Od5JzPyEfh3Ip38as08DZQ+/+7M7xN0KBokmT9\n Vy6FmhvwRlhwplUt7KHmNCgG4mmr2SLjJG7V2iCG94gwz4E5o6PZoOjYiXWHI31I8ZT4\n G9FWj+emoXXqckpcqdMymYulJlvnsnIfB5PEIxspE4u02DDW1SoQLLQxkTBUYGF7BbU8\n DJcZq7sLYy7fHM5CDS3FL22Jvrcej9pbhLaMrU88e8xhpJXrHrrZThm3wDuQxF9tTnZq\n 0LAyMQjnzooKN7Rdv7Zi6Zi4hQTUDVINPGIM76ANVEINJympaTbP7D6MWTICUNzxHOhZ\n LoYg==", "X-Google-DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n d=1e100.net; s=20251104; t=1777009679; x=1777614479;\n h=content-transfer-encoding:mime-version:message-id:date:subject:to\n :from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date:message-id\n :reply-to;\n bh=Q7M2fwY604nxmRG1YIO02Z14fgzwwg1Pa67qHupVFxk=;\n b=svVDjXtfhaHr9dHEGVHcL09jFWdfBfPjsz6ROpM5OKeRHAg8SNnT1QR383pcUHMZNQ\n fLM45wOy6yrwS0ED4Vf7v6yYRBXlj0tRWtN9nhdJrt4P8kxHYVXziii/kdb+EjC4vfUb\n EBNMelR6fXaBvOjaGv1a2rmnCf5wS2IkXqeK6J6VGLD2rjv+iNoHmwszPliRJaXnDZ4J\n CQXHJQ/lAigHhSk/oul9qMk9bhaIF/H87LCtyYw2Ca1QDd4RCIt5s/bIX03ZOCizFV1O\n D06CsFoaCNshfvyHPoqge7R+9onexJP2kfCKgCpOzRGr59gaw2hq+nxHSUeBy/gODxCJ\n 6Jxg==", "X-Forwarded-Encrypted": "i=1;\n AFNElJ/3mL/CgBQXynk5yGh9+NAhoARzHhcPJrACwTj3BDkrkJpVh77MLt5rLkPm+H7A8aNHG/bv442lfrjpXlk=@lists.ozlabs.org", "X-Gm-Message-State": "AOJu0YytrkgE2p8+oGI8LC8wYMpOubZbTeifmHW/DLR/A2Ynuaxx1MdV\n\tcP3ZG+9BwdePxjZtPW1UzmCj7i5zIBiTG0spd4KppotTYm0+H0bkMh03", "X-Gm-Gg": "AeBDieu3HflwrW3RuhBVFmI27xZGJqpLOaZv59KBdqiR1E8bgb7Zx442aXI038+rsSZ\n\t8qp0Yh28rGnyFC/p2EF5ZLqBdXwYrBdrzEWT59MvxgIofwLzFv0BZKGUF7EvQURt/rgVm0oHgbT\n\tFuSXKZVVM6V4i2lqukCbzBYw7pSvxYqsiocEurC4BvE7nGv+UVmXHQpkyWK4L1z1iyeRIFDAwhK\n\tN0VZ9YM6azFfcTAHsLL67wvUVdGSxtf/UU2udasnuqWQQpumDT0D3RG+JuMliJyUGZ3f/QbAJfT\n\tNdnGOO+drCr0+FkEv69rwROIao0KhHVzieoYDjnVxgV/dglOKsjgCAi0DpgcgPD12LxLy5ON3TR\n\t+HMBK7blBpvhLZvC58iAouX4tZAZzZicGyGSAcH+J4lIXMfXH3r6PDYL+2yp5koGzf5gbAycizE\n\t7hzO5BsSnGEbr2CUFXFPLnpeFIRlSgxg7iHfc1tOjl09wB0XjFA3evOmNzDy7Xf4IeJ3xiLploa\n\tTY/Y+votqL817A=", "X-Received": "by 2002:a17:903:28e:b0:2b0:7531:b61e with SMTP id\n d9443c01a7336-2b5f9f9f125mr305572665ad.41.1777009679150;\n Thu, 23 Apr 2026 22:47:59 -0700 (PDT)", "From": "\"Mukesh Kumar Chaurasiya (IBM)\" <mkchauras@gmail.com>", "To": "maddy@linux.ibm.com,\n\tmpe@ellerman.id.au,\n\tnpiggin@gmail.com,\n\tchleroy@kernel.org,\n\tpeterz@infradead.org,\n\tjpoimboe@kernel.org,\n\tjbaron@akamai.com,\n\taliceryhl@google.com,\n\trostedt@goodmis.org,\n\tardb@kernel.org,\n\tsumit.semwal@linaro.org,\n\tchristian.koenig@amd.com,\n\tojeda@kernel.org,\n\tboqun@kernel.org,\n\tgary@garyguo.net,\n\tbjorn3_gh@protonmail.com,\n\tlossin@kernel.org,\n\ta.hindborg@kernel.org,\n\ttmgross@umich.edu,\n\tdakr@kernel.org,\n\tnathan@kernel.org,\n\tnick.desaulniers+lkml@gmail.com,\n\tmorbo@google.com,\n\tjustinstitt@google.com,\n\ttamird@kernel.org,\n\tarnd@arndb.de,\n\tnsc@kernel.org,\n\tmkchauras@gmail.com,\n\tsimona.vetter@ffwll.ch,\n\tlinuxppc-dev@lists.ozlabs.org,\n\tlinux-kernel@vger.kernel.org,\n\tlinux-media@vger.kernel.org,\n\tdri-devel@lists.freedesktop.org,\n\tlinaro-mm-sig@lists.linaro.org,\n\trust-for-linux@vger.kernel.org,\n\tllvm@lists.linux.dev", "Subject": "[PATCH V13 0/7] Rust support for powerpc", "Date": "Fri, 24 Apr 2026 11:17:35 +0530", "Message-ID": "<20260424054742.45832-1-mkchauras@gmail.com>", "X-Mailer": "git-send-email 2.53.0", "X-Mailing-List": "linuxppc-dev@lists.ozlabs.org", "List-Id": "<linuxppc-dev.lists.ozlabs.org>", "List-Help": "<mailto:linuxppc-dev+help@lists.ozlabs.org>", "List-Owner": "<mailto:linuxppc-dev+owner@lists.ozlabs.org>", "List-Post": "<mailto:linuxppc-dev@lists.ozlabs.org>", "List-Archive": "<https://lore.kernel.org/linuxppc-dev/>,\n <https://lists.ozlabs.org/pipermail/linuxppc-dev/>", "List-Subscribe": "<mailto:linuxppc-dev+subscribe@lists.ozlabs.org>,\n <mailto:linuxppc-dev+subscribe-digest@lists.ozlabs.org>,\n <mailto:linuxppc-dev+subscribe-nomail@lists.ozlabs.org>", "List-Unsubscribe": "<mailto:linuxppc-dev+unsubscribe@lists.ozlabs.org>", "Precedence": "list", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=UTF-8", "Content-Transfer-Encoding": "8bit", "X-Spam-Status": "No, score=-0.2 required=3.0 tests=DKIM_SIGNED,DKIM_VALID,\n\tDKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM,RCVD_IN_DNSWL_NONE,\n\tSPF_HELO_NONE,SPF_PASS autolearn=disabled version=4.0.1 OzLabs 8", "X-Spam-Checker-Version": "SpamAssassin 4.0.1 (2024-03-25) on lists.ozlabs.org" }, "content": "Enable experimental rust support for ppc64le and ppc32be. The patch for\nppc32 has been provided by Link Mauve[1] and ppc64le support[2] has been\nmerged over it. ppc32 needs some toolchain fixes mentioned in the patch\n`rust: Add PowerPC support` and the discussion for that is done here[1].\n\nThis has been tested on\n- powernv9 hardware\n- pseries P11 hardware\n- pseries(9, 10) qemu\n- powernv(9, 10) qemu\n- rustdoc on x86 and powerpc64le\n- rusttest on x86 and powerpc64le\n\nWe are actively working with our LLVM team to get the target for ppc,\nppc64 and ppc64le in the rust compiler.\n\n[1] https://lore.kernel.org/all/20260204030507.8203-1-linkmauve@linkmauve.fr\n[2] https://lore.kernel.org/all/20260204042417.83903-1-mkchauras@gmail.com\n\nChangelog:\nV12 -> V13:\n- Added a patch for fixing build issue on ppc32 by Link Mauve\n- Added another patch to fix a build issue in dma-buf\n- Added another patch to enforce minimum `rustc` version for powerpc\nV12: https://lore.kernel.org/all/20260421120958.190430-1-mkchauras@gmail.com/\n\nV11 -> V12:\n- Rebased to mainline (rust/Makefile conflict resolved)\nV11: https://lore.kernel.org/all/20260417152253.2312961-1-mkchauras@gmail.com/\n\nV10 -> V11:\n- Updated `rust/Makefile`\n- Not all libraries are move to `rust/host` directory now. Only\n proc_macro2, quote and syn are moved\n- Special handling for pin init is added. Details in commit\n- Removed mkdir for `rust/host`, this is now handled by toolchain.\nV10: https://lore.kernel.org/all/20260406200149.3727922-1-mkchauras@gmail.com/\n\nV9 -> V10:\n- rust/Makefile updated with review comments from Miguel\n- Patch 1/4 updated with commit message and subject\nV9: https://lore.kernel.org/all/20260404121610.1956528-1-mkchauras@gmail.com/\n\nV8 -> V9:\n- rust/Makefile updated with a directory instead of abspath\nV8: https://lore.kernel.org/all/20260403145308.1042622-1-mkchauras@gmail.com/\n\nV7 -> V8:\n- rust/Makefile updated to separate host libraries from target\nV7: https://lore.kernel.org/all/20260329160254.2592207-1-mkchauras@gmail.com/\n\nChangelog:\nV6 -> V7:\n- Documentation removed as powerpc is still under development\n- Added a fix for race condition in rust/Makefile\nV6: https://lore.kernel.org/all/20260210090023.2587534-1-mkchauras@gmail.com\n\nV5 -> V6:\n- Added a missing Tested by from Venkat which got missed since V3\n- Support is marked as Maintained instead of experimental\nV5: https://lore.kernel.org/all/20260210053756.2088302-1-mkchauras@gmail.com\n\nV4 -> V5:\n- Removed a nested ifdef from PPC64 for Little endian toolchain\nV4: https://lore.kernel.org/all/20260209105456.1551677-1-mkchauras@gmail.com\n\nV3 -> V4:\n- Co-developed-by header added in patch 1\nV3: https://lore.kernel.org/all/20260205180429.3280657-1-mkchauras@gmail.com\n\nV2 -> V3:\n- Splited HAVE_RUST in 2 lines\n- BINDGEN_TARGET_powerpc initialized before assigning the same to\n BINDGEN_TARGET\nV2: https://lore.kernel.org/all/20260204210125.613350-1-mkchauras@gmail.com\n\nV1 -> V2:\n- jump label fix for rust has been moved to a separate patch\n- PPC32 support has been taken\n- rust support has been marked experimental\n- target.json dependency has been removed\n- HAVE_RUST now depends on CPU_LITTLE_ENDIAN for PPC64\n\nLink Mauve (2):\n rust: Make __udivdi3() and __umoddi3() panic\n rust: Add PowerPC support\n\nMukesh Kumar Chaurasiya (IBM) (5):\n rust: Fix \"multiple candidates for rmeta dependency core\" error\n dma-resv: Fix undefined symbol when CONFIG_DMA_SHARED_BUFFER is\n disabled\n powerpc/jump_label: adjust inline asm to be consistent\n rust/powerpc: Set min rustc version for powerpc\n powerpc: Enable Rust for ppc64le\n\n arch/powerpc/Kconfig | 2 ++\n arch/powerpc/Makefile | 7 ++++\n arch/powerpc/include/asm/jump_label.h | 23 ++++++------\n include/linux/dma-resv.h | 2 +-\n rust/Makefile | 52 +++++++++++++++++----------\n rust/compiler_builtins.rs | 6 ++++\n scripts/min-tool-version.sh | 6 +++-\n 7 files changed, 68 insertions(+), 30 deletions(-)" }