From nobody Thu Oct 2 13:07:15 2025 Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 6FE7421D00A for ; Wed, 17 Sep 2025 01:10:23 +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=1758071425; cv=none; b=bclv8Ku3FbVwe1ESXvUbEYrHhRlkSpE6Wui5qQRfJWLhXZ+2Daru/6mnjEx+QG148woIoDQNpBes/D8kfp0o4xtV2kAqZT+k5LuBCCRbdEaL1lcVWz8eba8d0HnO+5s4VHa9VKz3UXImwTnDI8XgRVXn1hxwWPlAFNhGXHlZ7Ck= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758071425; c=relaxed/simple; bh=5xt4C80mQGWhGn4QWQy8RJCY75EMFYpXXeicgnELsmI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=czknP+QZ8uftM7J4Tf8jBvCw1Aa0Ee2I1aKaPjbqQYWbhEHv+yYZXXTpzMHG2NFZQlJ2Xv7y/EPR/05p9FkVmsep7xzR7OQ6tpw/Xf05qTsn/5MOqGnI5jJIfXik1Nt8eGHooFxasDrP5QtkfVHbvoQxBEAUn9g3CVVZrhnIUTk= 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 _____8Cxrr99CspoKy4LAA--.23095S3; Wed, 17 Sep 2025 09:10:21 +0800 (CST) Received: from linux.localdomain (unknown [113.200.148.30]) by front1 (Coremail) with SMTP id qMiowJAxE+RwCsposWOaAA--.35728S6; Wed, 17 Sep 2025 09:10:21 +0800 (CST) From: Tiezhu Yang To: Josh Poimboeuf , Peter Zijlstra , Huacai Chen Cc: loongarch@lists.linux.dev, linux-kernel@vger.kernel.org Subject: [PATCH v2 4/4] LoongArch: Remove is_entry_func() related code Date: Wed, 17 Sep 2025 09:10:07 +0800 Message-ID: <20250917011007.4540-5-yangtiezhu@loongson.cn> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20250917011007.4540-1-yangtiezhu@loongson.cn> References: <20250917011007.4540-1-yangtiezhu@loongson.cn> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: qMiowJAxE+RwCsposWOaAA--.35728S6 X-CM-SenderInfo: p1dqw3xlh2x3gn0dqz5rrqw2lrqou0/ X-Coremail-Antispam: 1Uk129KBj93XoWxJryDCFW8Xr1rAF4rur15GFX_yoW8Gw15pF 9xAwnrWrWFv3s2g34DXw1j9rWDZrn7XrnFgFZrKFyrW3Zrt3W3Cr1Fvw1j9FZ0y3yrWF1r XFnak3s0ka1DZ3XCm3ZEXasCq-sJn29KB7ZKAUJUUUUr529EdanIXcx71UUUUU7KY7ZEXa sCq-sGcSsGvfJ3Ic02F40EFcxC0VAKzVAqx4xG6I80ebIjqfuFe4nvWSU5nxnvy29KBjDU 0xBIdaVrnRJUUU9jb4IE77IF4wAFF20E14v26r1j6r4UM7CY07I20VC2zVCF04k26cxKx2 IYs7xG6rWj6s0DM7CIcVAFz4kK6r1a6r1DM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48v e4kI8wA2z4x0Y4vE2Ix0cI8IcVAFwI0_Ar0_tr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI 0_Cr0_Gr1UM28EF7xvwVC2z280aVAFwI0_GcCE3s1l84ACjcxK6I8E87Iv6xkF7I0E14v2 6rxl6s0DM2kKe7AKxVWUXVWUAwAS0I0E0xvYzxvE52x082IY62kv0487Mc804VCY07AIYI kI8VC2zVCFFI0UMc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7IYx2IY67AKxVWUtVWr XwAv7VC2z280aVAFwI0_Gr0_Cr1lOx8S6xCaFVCjc4AY6r1j6r4UM4x0Y48IcxkI7VAKI4 8JMxAIw28IcxkI7VAKI48JMxC20s026xCaFVCjc4AY6r1j6r4UMxCIbckI1I0E14v26r1Y 6r17MI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE17CEb7 AF67AKxVWUAVWUtwCIc40Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r4j6ryUMIIF0xvE 2Ix0cI8IcVCY1x0267AKxVW8JVWxJwCI42IY6xAIw20EY4v20xvaj40_Jr0_JF4lIxAIcV C2z280aVAFwI0_Gr0_Cr1lIxAIcVC2z280aVCY1x0267AKxVW8JVW8JrUvcSsGvfC2Kfnx nUUI43ZEXa7IU1xpnPUUUUU== Content-Type: text/plain; charset="utf-8" For now, there is UNWIND_HINT_END_OF_STACK for the entry points kernel_entry() and smpboot_entry(), just remove is_entry_func() related code. Link: https://lore.kernel.org/lkml/kjiyla6qj3l7ezspitulrdoc5laj2e6hoecvd254= hssnpddczm@g6nkaombh6va/ Suggested-by: Josh Poimboeuf Signed-off-by: Tiezhu Yang --- arch/loongarch/kernel/unwind_orc.c | 11 ----------- 1 file changed, 11 deletions(-) diff --git a/arch/loongarch/kernel/unwind_orc.c b/arch/loongarch/kernel/unw= ind_orc.c index 0d5fa64a2225..710f82d73797 100644 --- a/arch/loongarch/kernel/unwind_orc.c +++ b/arch/loongarch/kernel/unwind_orc.c @@ -348,14 +348,6 @@ void unwind_start(struct unwind_state *state, struct t= ask_struct *task, } EXPORT_SYMBOL_GPL(unwind_start); =20 -static bool is_entry_func(unsigned long addr) -{ - extern u32 kernel_entry; - extern u32 kernel_entry_end; - - return addr >=3D (unsigned long)&kernel_entry && addr < (unsigned long)&k= ernel_entry_end; -} - static inline unsigned long bt_address(unsigned long ra) { extern unsigned long eentry; @@ -402,9 +394,6 @@ bool unwind_next_frame(struct unwind_state *state) /* Don't let modules unload while we're reading their ORC data. */ guard(rcu)(); =20 - if (is_entry_func(state->pc)) - goto end; - orc =3D orc_find(state->pc); if (!orc) { /* --=20 2.42.0