From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 79FDB331214; Thu, 2 Apr 2026 02:48:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=114.242.206.163 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775098136; cv=none; b=EAZugfqP3rD1KHU5fFEDwMtLmoQ/eQ/pfrBjP1tcCHV1kDKp+xcvNwYdcBumeUkUSRueZV0zJT5Y+k4qg/+M8yl4XliAKq+W2YpKrMdIKVo9nBpQgvBZj3cSFW/b7DGHLWduTplnJDZGEimIGZ0aJl9FbixkgLLXape0LLvvHw4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775098136; c=relaxed/simple; bh=nvdPCKZmii8Q5beKHgefCNimY7ElhJYekIGNQA4QKCM=; h=Subject:To:Cc:References:From:Message-ID:Date:MIME-Version: In-Reply-To:Content-Type; b=V+1Q75VQWRbe3wXi0VuxJN987OYB7P0UZChfYh8Qgdaq6B4UlC0FSER0y8tsSHZmPoA9de5JuBVtuOsXm/6mxKy6a9f3tJmbuYkH89/Vd/cOR5vMXE1uLuU3nVY3DkypnY6QWZWLU15JHOr8Syx3T+0oNO9jl91QE45hFX3myIo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn; spf=pass smtp.mailfrom=loongson.cn; arc=none smtp.client-ip=114.242.206.163 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=loongson.cn Received: from loongson.cn (unknown [113.200.148.30]) by gateway (Coremail) with SMTP id _____8Cx48AR2c1p5RAhAA--.33981S3; Thu, 02 Apr 2026 10:48:49 +0800 (CST) Received: from [10.130.40.83] (unknown [113.200.148.30]) by front1 (Coremail) with SMTP id qMiowJAxGMEH2c1p4CRjAA--.44258S3; Thu, 02 Apr 2026 10:48:39 +0800 (CST) Subject: Re: [PATCH v1 1/5] LoongArch: Define format for AM{SWAP/ADD}.{B/H}, DBAR and BSTRINS.D To: bot+bpf-ci@kernel.org, chenhuacai@kernel.org, hengqi.chen@gmail.com Cc: loongarch@lists.linux.dev, bpf@vger.kernel.org, linux-kernel@vger.kernel.org, ast@kernel.org, andrii@kernel.org, daniel@iogearbox.net, martin.lau@kernel.org, eddyz87@gmail.com, yonghong.song@linux.dev, clm@meta.com, ihor.solodrai@linux.dev References: <20260401071206.5506-2-yangtiezhu@loongson.cn> <6089c3c90bd2f2cf2848a39fc0d30219d0f3f95f9c74257a19d01de053eb1c44@mail.kernel.org> From: Tiezhu Yang Message-ID: <3b8ef23a-e324-4ad8-430c-e02adca44a1c@loongson.cn> Date: Thu, 2 Apr 2026 10:48:38 +0800 User-Agent: Mozilla/5.0 (X11; Linux loongarch64; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 In-Reply-To: <6089c3c90bd2f2cf2848a39fc0d30219d0f3f95f9c74257a19d01de053eb1c44@mail.kernel.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit X-CM-TRANSID:qMiowJAxGMEH2c1p4CRjAA--.44258S3 X-CM-SenderInfo: p1dqw3xlh2x3gn0dqz5rrqw2lrqou0/ X-Coremail-Antispam: 1Uk129KBj9xXoWrZF48Jr4ruF1rZF4fJF1DJwc_yoWkCrc_Cw sFgFy5Gr48AanYvw1DG3Z5Xr45Aa1fKFnaya4DK39rAFy5Xr13twsxJa4fAryYqF1ftFZa yw4xZFnF9w12qosvyTuYvTs0mTUanT9S1TB71UUUUjUqnTZGkaVYY2UrUUUUj1kv1TuYvT s0mT0YCTnIWjqI5I8CrVACY4xI64kE6c02F40Ex7xfYxn0WfASr-VFAUDa7-sFnT9fnUUI cSsGvfJTRUUUbq8YFVCjjxCrM7AC8VAFwI0_Jr0_Gr1l1xkIjI8I6I8E6xAIw20EY4v20x vaj40_Wr0E3s1l1IIY67AEw4v_Jrv_JF1l8cAvFVAK0II2c7xJM28CjxkF64kEwVA0rcxS w2x7M28EF7xvwVC0I7IYx2IY67AKxVWUCVW8JwA2z4x0Y4vE2Ix0cI8IcVCY1x0267AKxV W8JVWxJwA2z4x0Y4vEx4A2jsIE14v26F4j6r4UJwA2z4x0Y4vEx4A2jsIEc7CjxVAFwI0_ Gr0_Gr1UM2kKe7AKxVWUXVWUAwAS0I0E0xvYzxvE52x082IY62kv0487Mc804VCY07AIYI kI8VC2zVCFFI0UMc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7IYx2IY67AKxVWUAVWU twAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r4UM4x0Y48IcVAKI48JMx k0xIA0c2IEe2xFo4CEbIxvr21lc7CjxVAaw2AFwI0_Jw0_GFyl42xK82IYc2Ij64vIr41l 4I8I3I0E4IkC6x0Yz7v_Jr0_Gr1l4IxYO2xFxVAFwI0_Jrv_JF1lx2IqxVAqx4xG67AKxV WUJVWUGwC20s026x8GjcxK67AKxVWUGVWUWwC2zVAF1VAY17CE14v26r1q6r43MIIYrxkI 7VAKI48JMIIF0xvE2Ix0cI8IcVAFwI0_Jr0_JF4lIxAIcVC0I7IYx2IY6xkF7I0E14v26r 4j6F4UMIIF0xvE42xK8VAvwI8IcIk0rVWUJVWUCwCI42IY6I8E87Iv67AKxVWUJVW8JwCI 42IY6I8E87Iv6xkF7I0E14v26r4j6r4UJbIYCTnIWIevJa73UjIFyTuYvjxUceOJUUUUU On 2026/4/1 下午4:23, bot+bpf-ci@kernel.org wrote: >> diff --git a/arch/loongarch/kernel/cpu-probe.c b/arch/loongarch/kernel/cpu-probe.c >> index 657bbae6c1c7..93466fc7d33d 100644 >> --- a/arch/loongarch/kernel/cpu-probe.c >> +++ b/arch/loongarch/kernel/cpu-probe.c >> @@ -177,6 +177,10 @@ static void cpu_probe_common(struct cpuinfo_loongarch *c) >> c->options |= LOONGARCH_CPU_LAM; >> elf_hwcap |= HWCAP_LOONGARCH_LAM; >> } >> + if (config & CPUCFG2_LAM_BH) { >> + c->options |= LOONGARCH_CPU_LAM_BH; >> + elf_hwcap |= HWCAP_LOONGARCH_LAM_BH; >> + } > > Should there be a corresponding entry in the "Features" line of > /proc/cpuinfo for the new lam_bh capability? > > Every other feature that sets elf_hwcap in cpu_probe_common() also > has a matching seq_puts() in show_cpuinfo() in proc.c: > > arch/loongarch/kernel/proc.c:show_cpuinfo() { > ... > if (cpu_has_lam) > seq_puts(m, " lam"); > if (cpu_has_scq) > seq_puts(m, " scq"); > ... > } > > The new cpu_has_lam_bh is missing from this list. Yes, I think so, thank you. I will wait for more comments before sending v2. Thanks, Tiezhu