{"id":2219607,"url":"http://patchwork.ozlabs.org/api/patches/2219607/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260403145308.1042622-3-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":"<20260403145308.1042622-3-mkchauras@gmail.com>","list_archive_url":"https://lore.kernel.org/linuxppc-dev/20260403145308.1042622-3-mkchauras@gmail.com/","date":"2026-04-03T14:53:06","name":"[V8,2/4] 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 (IBM)","email":"mkchauras@gmail.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260403145308.1042622-3-mkchauras@gmail.com/mbox/","series":[{"id":498640,"url":"http://patchwork.ozlabs.org/api/series/498640/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=498640","date":"2026-04-03T14:53:04","name":"Rust support for powerpc","version":8,"mbox":"http://patchwork.ozlabs.org/series/498640/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2219607/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2219607/checks/","tags":{},"related":[],"headers":{"Return-Path":"\n ","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=kY3hIj5Q;\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-19275-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::432\"","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=kY3hIj5Q;\n\tdkim-atps=neutral","lists.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=gmail.com\n (client-ip=2607:f8b0:4864:20::432; helo=mail-pf1-x432.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 4fnMDT1ZY6z1yCs\n\tfor ; Sat, 04 Apr 2026 01:53:45 +1100 (AEDT)","from boromir.ozlabs.org (localhost [127.0.0.1])\n\tby lists.ozlabs.org (Postfix) with ESMTP id 4fnMDT0Wt2z2yjm;\n\tSat, 04 Apr 2026 01:53:45 +1100 (AEDT)","from mail-pf1-x432.google.com (mail-pf1-x432.google.com\n [IPv6:2607:f8b0:4864:20::432])\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 4fnMDS1l6kz2yWK\n\tfor ; Sat, 04 Apr 2026 01:53:44 +1100 (AEDT)","by mail-pf1-x432.google.com with SMTP id\n d2e1a72fcca58-82cf83bf375so813534b3a.0\n for ;\n Fri, 03 Apr 2026 07:53:44 -0700 (PDT)","from li-1a3e774c-28e4-11b2-a85c-acc9f2883e29.ibm.com.com\n ([106.51.160.44])\n by smtp.gmail.com with ESMTPSA id\n d2e1a72fcca58-82cf9ca4efesm6301682b3a.61.2026.04.03.07.53.33\n (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);\n Fri, 03 Apr 2026 07:53:41 -0700 (PDT)"],"ARC-Seal":"i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1775228024;\n\tcv=none;\n b=H+uXRKf2shpGEp33R39XwXs+eoDg0fUIOpv/xTnEhn1ze7ViCNpmhKeP003vw7iOcfkqIi56oaMevYE+Rxi6YTvhAxigHNb1LK4tbd4yMbd5IUX1R57pzgeaTV0xXG+OyDbuVjrpDgSngFyydMwXE/HVeMZceD59mCXG/nK1vq2k3ml/J9fvvXPGGCQcFh6if+7H+VD5LKa3V/lv2+GR4lDYE6D4vDoiL7JkAeWjfgEDFzXjJbZe6HRWVc4aOXXAPMtH+QlWVFGL3egW4UcG74sZ1WDscNqWEkViyNpgiepQM0/WOapW/Sx16eLfnFx+v6cjtIq+ipgow8kMGE1iVg==","ARC-Message-Signature":"i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707;\n\tt=1775228024; c=relaxed/relaxed;\n\tbh=SIf376OZyXcpY0mdrIrP1nTWV/VE0v5g8114Fjjgl84=;\n\th=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References:\n\t MIME-Version;\n b=DBueWsVlvf/YttSt29q2xm20vRJIniG19koFxT+Maq3XEuAlE/4LD4Q85qpJRhT8pAPfoAHp6EKp3loxtLAC0q5KCpQigKWemvrGkVHaeBlxr2N59pv+zHH7ZSraKvURaR+80M3QDLpJgwMbMANq2FN894yMeK21tTccAHM978ZV+wY1RUaAqpG/tWvmV2fN3XxWIFllSWTOb66tLWvNvQQfc5cGhD5UF51m7DWdG+tvuViUW1Uqjv/GHTa0ofY/RHsvqgmRBgbqJg561Pqd6rselg/EXRgUzlcm4mzTbs80SIYPwDejnJFJIUUw6B3zKfbQ9IE6H0WPkKSJ99hBLQ==","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=kY3hIj5Q; dkim-atps=neutral;\n spf=pass (client-ip=2607:f8b0:4864:20::432; helo=mail-pf1-x432.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=1775228022; x=1775832822;\n darn=lists.ozlabs.org;\n h=content-transfer-encoding:mime-version:references:in-reply-to\n :message-id:date:subject:cc:to:from:from:to:cc:subject:date\n :message-id:reply-to;\n bh=SIf376OZyXcpY0mdrIrP1nTWV/VE0v5g8114Fjjgl84=;\n b=kY3hIj5Qg8kk1oynP4EWn3M6MojBiQGrwsWUTCbLC8Phqif1T3gqaJp5IXshBMkEh4\n 8+ALmsuyHzojMCI3PfRgA4NQj6oml5gGGYwWjTddEEN3JDKsYaB4yhLLQGa9BmsOsj0q\n gM2kk6NmuMxhHb8uUa1dk2XTuEbEbQrUwQAv5+kGwpQ3YNNTAaIW0UtA+PPKj9W+/Zhb\n tpPxwiRU/gcHhtnNSMOuqxKiiJ3LGhXsD9N7TOLr2D5NnJMPESq9ePyPrCn1slsTYtF0\n HLf2o7k3ZD61x4xWSXUgK8oJYDaD51RrfSwbHRM8PWKBxPO546uwJVXvRXnj/VXUbRdW\n Xojw==","X-Google-DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed;\n d=1e100.net; s=20251104; t=1775228022; x=1775832822;\n h=content-transfer-encoding:mime-version:references:in-reply-to\n :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from\n :to:cc:subject:date:message-id:reply-to;\n bh=SIf376OZyXcpY0mdrIrP1nTWV/VE0v5g8114Fjjgl84=;\n b=Kpw6/lybiZP/cx0rUBXtt13BhKs4hzreiIEQaBaeiA3BE0IcLWXXgVMdrOSVoPduHb\n xEwgZq6rOt3Cluz2GzXc1XZh65LzjoBYpggo9kh6sMxAbJrYo09L+2w+WdY4qw50K+SG\n TMPyHXbqVjYgejfgktlM99kCmzULgIG+Fz0Ph+4od9vjXRZu1DlbogPlPqjvsUuxdxlH\n Qi0OTUEY4WfZAGaHFKTKbRA5pJukTopCio5VC6/+M6IQ7HC1k3GNeaSqsf4vFDg++f9o\n fjW9KhKQQv+YElP97rzbADX4tMrKBSFL4CcOQDidbglUzDG61j9F3ENn1uY+NmVw8nAZ\n R2Ug==","X-Forwarded-Encrypted":"i=1;\n AJvYcCXsNzcCF/DyTIuYVtsZuFQyMrmDFAeX5mi5eULcXh95oHuKb5CF5+g/2SfPw30C+uAsp25ZJUm2jpI56a0=@lists.ozlabs.org","X-Gm-Message-State":"AOJu0YyELebhfI+fzf7TGMzdWI/XxJm32VWRtqRHe/MzVzGOHZz/OSni\n\tzKotQgEBI5qAJhvTWTS2R4PSiYbTE1GTIzK2XTKdM4pt/ZT0tSGQ2oSb","X-Gm-Gg":"ATEYQzzSw126kyl60gAIpMiNJm3LpmfndHQZJLarrHth9+bXGN34wXYaEYbL/7n4Kc2\n\tTSxT4ALurUOBmNq3UHfptFwHPzLEpACnx4m+tktImgpqvOQNI+Ul0hM7v9OtrOSPF1J+CnObCrY\n\tg1cp3/3sWGRitI+0WQXapE3JTf1AEF8Hl6/AyDVfSRZRa2LVlOnlXfQzMJtiwRVFiF1ySGhUGOP\n\tbIb6TYPTOvycRPa+5TXpPY1Uw+JlJc6wRp10BC33chHKohnkx8Ki7obRE4fDv440uAr6lvTAI2Y\n\tZOpg5TLmNxCjAO/9lGFcjR9edRuGsPZN53rK3nsT3fE80tviMSRbIWrKZckTSwsHF/NRm+cqqVe\n\t/o5CLhEsUOjAtZvkDpsoEnkP5DeD11B2YvLc+ILpQn1PD2pP6rS0ODNwZCofiIP7ulcTfZbpKCm\n\tk50ynbaSyKVSLlOLMEuzx4uzK1DtZoAXkTs028iOMzXqqAhlXcZP+OHPHlapA/NMYfAvc0MiuJ6\n\tKo=","X-Received":"by 2002:a05:6a00:414c:b0:82c:fe17:5af5 with SMTP id\n d2e1a72fcca58-82d0db96d9emr2983355b3a.44.1775228022326;\n Fri, 03 Apr 2026 07:53:42 -0700 (PDT)","From":"\"Mukesh Kumar Chaurasiya (IBM)\" ","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\tlinuxppc-dev@lists.ozlabs.org,\n\tlinux-kernel@vger.kernel.org,\n\trust-for-linux@vger.kernel.org,\n\tllvm@lists.linux.dev","Cc":"\"Mukesh Kumar Chaurasiya (IBM)\" ","Subject":"[PATCH V8 2/4] powerpc/jump_label: adjust inline asm to be consistent","Date":"Fri, 3 Apr 2026 20:23:06 +0530","Message-ID":"<20260403145308.1042622-3-mkchauras@gmail.com>","X-Mailer":"git-send-email 2.53.0","In-Reply-To":"<20260403145308.1042622-1-mkchauras@gmail.com>","References":"<20260403145308.1042622-1-mkchauras@gmail.com>","X-Mailing-List":"linuxppc-dev@lists.ozlabs.org","List-Id":"","List-Help":"","List-Owner":"","List-Post":"","List-Archive":",\n ","List-Subscribe":",\n ,\n ","List-Unsubscribe":"","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 \nSigned-off-by: Madhavan Srinivasan \nReviewed-by: Alice Ryhl \nReviewed-by: Christophe Leroy (CS GROUP) \nReviewed-by: Gary Guo \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) \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":["V8","2/4"]}