{"id":2228354,"url":"http://patchwork.ozlabs.org/api/patches/2228354/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260426085725.2090827-4-mkchauras@gmail.com/","project":{"id":2,"url":"http://patchwork.ozlabs.org/api/projects/2/?format=json","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/","list_archive_url":"https://lore.kernel.org/linuxppc-dev/","list_archive_url_format":"https://lore.kernel.org/linuxppc-dev/{}/","commit_url_format":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id={}"},"msgid":"<20260426085725.2090827-4-mkchauras@gmail.com>","list_archive_url":"https://lore.kernel.org/linuxppc-dev/20260426085725.2090827-4-mkchauras@gmail.com/","date":"2026-04-26T08:57:21","name":"[V14,3/7] powerpc/jump_label: adjust inline asm to be consistent","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"2688c65cddac038989da44064f159daa0b2fb495","submitter":{"id":92575,"url":"http://patchwork.ozlabs.org/api/people/92575/?format=json","name":"Mukesh Kumar Chaurasiya","email":"mkchauras@gmail.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260426085725.2090827-4-mkchauras@gmail.com/mbox/","series":[{"id":501515,"url":"http://patchwork.ozlabs.org/api/series/501515/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=501515","date":"2026-04-26T08:57:18","name":"Rust support for powerpc","version":14,"mbox":"http://patchwork.ozlabs.org/series/501515/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2228354/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2228354/checks/","tags":{},"related":[],"headers":{"Return-Path":"\n <linuxppc-dev+bounces-20108-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=Hz1QDeEv;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org\n (client-ip=2404:9400:21b9:f100::1; helo=lists.ozlabs.org;\n envelope-from=linuxppc-dev+bounces-20108-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::102a\"","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=Hz1QDeEv;\n\tdkim-atps=neutral","lists.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=gmail.com\n (client-ip=2607:f8b0:4864:20::102a; helo=mail-pj1-x102a.google.com;\n envelope-from=mkchauras@gmail.com; receiver=lists.ozlabs.org)"],"Received":["from lists.ozlabs.org (lists.ozlabs.org\n [IPv6:2404:9400:21b9:f100::1])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4g3LFp3BYvz1xvV\n\tfor <incoming@patchwork.ozlabs.org>; Sun, 26 Apr 2026 18:58:22 +1000 (AEST)","from boromir.ozlabs.org (localhost [127.0.0.1])\n\tby lists.ozlabs.org (Postfix) with ESMTP id 4g3LFp22zpz2ynn;\n\tSun, 26 Apr 2026 18:58:22 +1000 (AEST)","from mail-pj1-x102a.google.com (mail-pj1-x102a.google.com\n [IPv6:2607:f8b0:4864:20::102a])\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 4g3LFn4N9Lz2ygY\n\tfor <linuxppc-dev@lists.ozlabs.org>; Sun, 26 Apr 2026 18:58:21 +1000 (AEST)","by mail-pj1-x102a.google.com with SMTP id\n 98e67ed59e1d1-362e30526f8so1200881a91.3\n        for <linuxppc-dev@lists.ozlabs.org>;\n Sun, 26 Apr 2026 01:58:21 -0700 (PDT)","from li-1a3e774c-28e4-11b2-a85c-acc9f2883e29.ibm.com.com\n ([106.51.164.157])\n        by smtp.gmail.com with ESMTPSA id\n 98e67ed59e1d1-36141868906sm27718937a91.3.2026.04.26.01.58.07\n        (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);\n        Sun, 26 Apr 2026 01:58:18 -0700 (PDT)"],"ARC-Seal":"i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1777193902;\n\tcv=none;\n b=CXVJIiFaNiW70YjzET8bYfCBzzgV0DiGQrPQ0Tc/Ekde60EztFIMGYQqLl9Ugyte39zQ2v2KcbuGsp6cxTJubiD6Sp115T1DjsbFB1jcVCXXyBZ1L9ANpw7JcfHMn4/05rw/HcFXiffiboOoO7Ebs2OsEYAbprDW0942ecWbnBE8buPWvdTfiebWCY0U12QpOW8p2jm7oMpu2W9J+mNQsAYGZsYuHRQa5IPiCfzhZcmIoejJQ++1hGu5I79uPHFiVsTyzegkqK+ACnhuxzaAvrDUeoWJ3wdNiOAdSwkWSKYg0N3O2KKnGvP/oJ/YVbU+e6ofSJdpcl0aIWo6+oBO6g==","ARC-Message-Signature":"i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707;\n\tt=1777193902; c=relaxed/relaxed;\n\tbh=SIf376OZyXcpY0mdrIrP1nTWV/VE0v5g8114Fjjgl84=;\n\th=From:To:Subject:Date:Message-ID:In-Reply-To:References:\n\t MIME-Version;\n b=ZjaFwTJxSZkJ4nKUAX7nyyG+MhfisO9I7b+uhjnHDcOf624AJtT2j1x66+rX/IwfGHyHfHEBs4Oog9RxMyZL3uDjBaG0rUXZt/2NDkNtds57bvx1fPp2wgcjHugJ2J47vH+ipm8/IOEi6HEr0AJYfO9sHWiJ6A84hsAAiwb3I9f5D5OEr2StBOIRr4vN6k4tboHFMzItR5YFo+qFp8grFHvEz6VspIwRz4HMT8Z1etpqHRILcTzvGK1FrGL3siH35aKfQwfdIkwkLTFasAJXSzQGMht/5S9QuYceB4lXFKDLOyAc2HR8HBfgLAdNd4HyH/oxuLlBl3jccySivLHqmA==","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=Hz1QDeEv; dkim-atps=neutral;\n spf=pass (client-ip=2607:f8b0:4864:20::102a; helo=mail-pj1-x102a.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=1777193899; x=1777798699;\n darn=lists.ozlabs.org;\n        h=content-transfer-encoding:mime-version:references:in-reply-to\n         :message-id:date:subject:to:from:from:to:cc:subject:date:message-id\n         :reply-to;\n        bh=SIf376OZyXcpY0mdrIrP1nTWV/VE0v5g8114Fjjgl84=;\n        b=Hz1QDeEvFYKppmQPolS0whae1jPg+v+uPa0QuXYl8a0fQq5xvh375UBWksWXTkVyyt\n         nFYQ6xAiK8U/Hpq6UWfeW2sci5lITdUR6mJTabgkbZdmSaHlWUfasy7TBrw7ivNqAk0O\n         MyMedsfgDLBFu9buu58AaBZwi+PSTQd8qmsC/gzOEpOpechRQS0vFjeoRlI3Xbu2ACG7\n         l6Mn7YT4RCPRkkT85kH0tkQ2nmPtsZ7ihFuUk7aP8AJtiJcUdcOtZ4S24EI6G6QwVvFt\n         VRBTDX9XskfTbEN/7HMkrdbvA5uWGtU+zXng0do6RELSB4QHQFRBlrTiRTT53h1vVjPG\n         5WiA==","X-Google-DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed;\n        d=1e100.net; s=20251104; t=1777193899; x=1777798699;\n        h=content-transfer-encoding:mime-version:references:in-reply-to\n         :message-id:date:subject:to:from:x-gm-gg:x-gm-message-state:from:to\n         :cc:subject:date:message-id:reply-to;\n        bh=SIf376OZyXcpY0mdrIrP1nTWV/VE0v5g8114Fjjgl84=;\n        b=PczEey4LTZK2OFyEl5+9ufJ4EulpREsJitYdSuCmMATUeRJ+J7DVOG/vgijJ7HHRPV\n         H/xQrtqGdGHW1JfSQ/DJYugljzQFFA/xteh9ZJkGXX3+RBjgxchAMpKUiHAM94aE+8on\n         OLXU7zyBicFOkGFKkYw6Nhy3dUbkUq82MOmo402qfDYWOCrERpJ2htTf1U/AU/iS0IzA\n         zmxA5mW7MZtmexm61TD4Ae6Smn3o9beR2kj+eJocKXGyLdzYxLC85SPZm4RTBppg9a+S\n         RSi8Yni8rvbEtLO+EYavC/uQokdBEN8TLqTD28/Pwcl/WRI1E/5hBfTcJONJ5i1bykmM\n         lVBw==","X-Forwarded-Encrypted":"i=1;\n AFNElJ92G2Q5a3tVTIB3heykCqWNMMb718b0CGD9UPUHZ9OjMfamWZtReG5IPsW1xjbhA0UL/SdTAminp0+OM5c=@lists.ozlabs.org","X-Gm-Message-State":"AOJu0YyFFU/oEqaEtJcqNDqn0a819CUpEr7gZp+kBdrV3e+a/F/uqLQX\n\tcQfl8hEvyJoJtHuskD/FfmU2mwSaZ4mHg6KhgZfCkteMZRxaRTWgTyey","X-Gm-Gg":"AeBDievLu0/gW5KKue2H63vvxCQAT+6uXXfemAnC6DFF1ob8M/MoaXoXlWstS0B1zef\n\tH9wbxSf2H7HgvOD6BgQxVYBgNgriC7ysTKj4nlIiVkzXqoHh55ViOQngMlgH96BEB1+84dndTnm\n\thNNFucMEspIZ+ohN+OkG1ZuRPE5jA3jjWaK+A8jLRGx/Ud0QOxz8PIThAyiJ+aZj18A2xTHUK5K\n\tCQNkDqKveZJCqvVccYkRofUq4ATKd+JYBqdxlHP9FYIkqwuEyh16qjfA5+QyJKcVU87C+3JV5mP\n\tajrLH+rqO+IFHgh6XeUA735Ka+aIofxbUkXin0zo6HtW6Al9yFR8HY7yDt9FiR1X5cTBDQWcv5E\n\t5lOlFduhFRezsTNkrK0Otll8ysuTHV3wBE1BHFQDrC5IyGSleHL4xJhsxX3QXxxNOv+Nw+d8gpA\n\tz7GS/ii9ftLHfxtUSeav52E+hHXJKm54zvKF3+HK2kOgOJUv8YE81SjeDK9re3Myv/rGXbXIWyb\n\t77L3t9bI0mfen4=","X-Received":"by 2002:a17:90b:3f47:b0:35f:b1ad:fded with SMTP id\n 98e67ed59e1d1-36140474686mr40098125a91.18.1777193899315;\n        Sun, 26 Apr 2026 01:58:19 -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\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\tdaniel.almeida@collabora.com,\n\tfujita.tomonori@gmail.com,\n\tviresh.kumar@linaro.org,\n\tprafulrai522@gmail.com,\n\tgregkh@linuxfoundation.org,\n\tarnd@arndb.de,\n\ttamird@kernel.org,\n\tmkchauras@gmail.com,\n\tlyude@redhat.com,\n\tairlied@gmail.com,\n\tj@jannau.net,\n\tlinuxppc-dev@lists.ozlabs.org,\n\tlinux-kernel@vger.kernel.org,\n\trust-for-linux@vger.kernel.org,\n\tllvm@lists.linux.dev","Subject":"[PATCH V14 3/7] powerpc/jump_label: adjust inline asm to be\n consistent","Date":"Sun, 26 Apr 2026 14:27:21 +0530","Message-ID":"<20260426085725.2090827-4-mkchauras@gmail.com>","X-Mailer":"git-send-email 2.53.0","In-Reply-To":"<20260426085725.2090827-1-mkchauras@gmail.com>","References":"<20260426085725.2090827-1-mkchauras@gmail.com>","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-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":"Added support for a new macro ARCH_STATIC_BRANCH_ASM in powerpc\nto avoid duplication of inline asm between C and Rust. This is\ninline with 'commit aecaf181651c (\"jump_label: adjust inline asm to be consistent\")'\n\nCo-developed-by: Madhavan Srinivasan <maddy@linux.ibm.com>\nSigned-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>\nReviewed-by: Alice Ryhl <aliceryhl@google.com>\nReviewed-by: Christophe Leroy (CS GROUP) <chleroy@kernel.org>\nReviewed-by: Gary Guo <gary@garyguo.net>\nLink: https://github.com/Rust-for-Linux/linux/issues/105\nLink: https://github.com/linuxppc/issues/issues/451\nSigned-off-by: Mukesh Kumar Chaurasiya (IBM) <mkchauras@gmail.com>\n---\n arch/powerpc/include/asm/jump_label.h | 23 +++++++++++++----------\n 1 file changed, 13 insertions(+), 10 deletions(-)","diff":"diff --git a/arch/powerpc/include/asm/jump_label.h b/arch/powerpc/include/asm/jump_label.h\nindex d4eaba459a0e..3016e9c8d6bc 100644\n--- a/arch/powerpc/include/asm/jump_label.h\n+++ b/arch/powerpc/include/asm/jump_label.h\n@@ -15,14 +15,20 @@\n #define JUMP_ENTRY_TYPE\t\tstringify_in_c(FTR_ENTRY_LONG)\n #define JUMP_LABEL_NOP_SIZE\t4\n \n+#define JUMP_TABLE_ENTRY(key, label)\t\t\t\\\n+\t\".pushsection __jump_table,  \\\"aw\\\"\t\\n\\t\"\t\\\n+\t\".long 1b - ., \" label \" - .\t\t\\n\\t\"\t\\\n+\tJUMP_ENTRY_TYPE key \" - .\t\t\\n\\t\"\t\\\n+\t\".popsection \t\t\t\t\\n\\t\"\n+\n+#define ARCH_STATIC_BRANCH_ASM(key, label)\t\t\\\n+\t\"1:\tnop\t\t\t\t\\n\\t\"\t\\\n+\tJUMP_TABLE_ENTRY(key, label)\n+\n static __always_inline bool arch_static_branch(struct static_key *key, bool branch)\n {\n-\tasm goto(\"1:\\n\\t\"\n-\t\t \"nop # arch_static_branch\\n\\t\"\n-\t\t \".pushsection __jump_table,  \\\"aw\\\"\\n\\t\"\n-\t\t \".long 1b - ., %l[l_yes] - .\\n\\t\"\n-\t\t JUMP_ENTRY_TYPE \"%c0 - .\\n\\t\"\n-\t\t \".popsection \\n\\t\"\n+\tasm goto(\n+\t\t ARCH_STATIC_BRANCH_ASM(\"%c0\", \"%l[l_yes]\")\n \t\t : :  \"i\" (&((char *)key)[branch]) : : l_yes);\n \n \treturn false;\n@@ -34,10 +40,7 @@ static __always_inline bool arch_static_branch_jump(struct static_key *key, bool\n {\n \tasm goto(\"1:\\n\\t\"\n \t\t \"b %l[l_yes] # arch_static_branch_jump\\n\\t\"\n-\t\t \".pushsection __jump_table,  \\\"aw\\\"\\n\\t\"\n-\t\t \".long 1b - ., %l[l_yes] - .\\n\\t\"\n-\t\t JUMP_ENTRY_TYPE \"%c0 - .\\n\\t\"\n-\t\t \".popsection \\n\\t\"\n+\t\t JUMP_TABLE_ENTRY(\"%c0\", \"%l[l_yes]\")\n \t\t : :  \"i\" (&((char *)key)[branch]) : : l_yes);\n \n \treturn false;\n","prefixes":["V14","3/7"]}