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[2620:137:e000::1:20]) by mx.google.com with ESMTP id r74-20020a632b4d000000b00457dc916cd8si2816441pgr.152.2022.11.17.22.07.31; Thu, 17 Nov 2022 22:07:44 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240898AbiKRGFZ (ORCPT + 99 others); Fri, 18 Nov 2022 01:05:25 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34586 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229482AbiKRGFX (ORCPT ); Fri, 18 Nov 2022 01:05:23 -0500 Received: from loongson.cn (mail.loongson.cn [114.242.206.163]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id E6EBD98255 for ; Thu, 17 Nov 2022 22:05:21 -0800 (PST) Received: from loongson.cn (unknown [113.200.148.30]) by gateway (Coremail) with SMTP id _____8Cxq9igIHdjpIcIAA--.23920S3; Fri, 18 Nov 2022 14:05:20 +0800 (CST) Received: from linux.localdomain (unknown [113.200.148.30]) by localhost.localdomain (Coremail) with SMTP id AQAAf8Dx9VagIHdjT1sWAA--.40305S2; Fri, 18 Nov 2022 14:05:20 +0800 (CST) From: Tiezhu Yang To: Huacai Chen , WANG Xuerui , Masami Hiramatsu Cc: loongarch@lists.linux.dev, linux-kernel@vger.kernel.org Subject: [PATCH v4 0/4] Add kprobe and kretprobe support for LoongArch Date: Fri, 18 Nov 2022 14:05:10 +0800 Message-Id: <1668751514-2998-1-git-send-email-yangtiezhu@loongson.cn> X-Mailer: git-send-email 2.1.0 X-CM-TRANSID: AQAAf8Dx9VagIHdjT1sWAA--.40305S2 X-CM-SenderInfo: p1dqw3xlh2x3gn0dqz5rrqw2lrqou0/ X-Coremail-Antispam: 1Uk129KBjvJXoWxJr4xtw4UKr43Ar4xAw4xZwb_yoW8WF47pF 9rZrn5Gr4rGwn3Jr9xt3WUur1ftw18C3y2ga17try8C3W7XryUArs3KrZxXasYkwsIqr1S qr1rW3yYgFyxJa7anT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUj1kv1TuYvTs0mT0YCTnIWj qI5I8CrVACY4xI64kE6c02F40Ex7xfYxn0WfASr-VFAUDa7-sFnT9fnUUIcSsGvfJTRUUU b7AYFVCjjxCrM7AC8VAFwI0_Jr0_Gr1l1xkIjI8I6I8E6xAIw20EY4v20xvaj40_Wr0E3s 1l1IIY67AEw4v_Jrv_JF1l8cAvFVAK0II2c7xJM28CjxkF64kEwVA0rcxSw2x7M28EF7xv wVC0I7IYx2IY67AKxVWUCVW8JwA2z4x0Y4vE2Ix0cI8IcVCY1x0267AKxVWUJVW8JwA2z4 x0Y4vEx4A2jsIE14v26r4UJVWxJr1l84ACjcxK6I8E87Iv6xkF7I0E14v26r4UJVWxJr1l e2I262IYc4CY6c8Ij28IcVAaY2xG8wAqjxCEc2xF0cIa020Ex4CE44I27wAqx4xG64xvF2 IEw4CE5I8CrVC2j2WlYx0E2Ix0cI8IcVAFwI0_JrI_JrylYx0Ex4A2jsIE14v26r1j6r4U McvjeVCFs4IE7xkEbVWUJVW8JwACjcxG0xvY0x0EwIxGrwCF04k20xvY0x0EwIxGrwCFx2 IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4vE14v2 6r106r1rMI8E67AF67kF1VAFwI0_JF0_Jw1lIxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67 AKxVWUJVWUCwCI42IY6xIIjxv20xvEc7CjxVAFwI0_Jr0_Gr1lIxAIcVCF04k26cxKx2IY s7xG6r1j6r1xMIIF0xvEx4A2jsIE14v26r1j6r4UMIIF0xvEx4A2jsIEc7CjxVAFwI0_Jr 0_GrUvcSsGvfC2KfnxnUUI43ZEXa7IU8j-e5UUUUU== X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,SPF_HELO_PASS, SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1749812945378712557?= X-GMAIL-MSGID: =?utf-8?q?1749812945378712557?= v4: -- Remove kprobe_exceptions_notify() in kprobes.c -- Call kprobe_breakpoint_handler() and kprobe_singlestep_handler() in do_bp() v3: -- Rebase on the latest code -- Check the alignment of PC in simu_branch() and simu_pc() -- Add ibar in flush_insn_slot() -- Rename kprobe_{pre,post}_handler() to {post_}kprobe_handler -- Add preempt_disable() and preempt_enable_no_resched() -- Remove r0 save/restore and do some minor changes in kprobes_trampoline.S -- Do not enable CONFIG_KPROBES by default v2: -- Split simu_branch() and simu_pc() into a single patch -- Call kprobe_page_fault() in do_page_fault() -- Add kprobes_trampoline.S for kretprobe Tiezhu Yang (4): LoongArch: Simulate branch and PC instructions LoongArch: Add kprobe support LoongArch: Add kretprobe support samples/kprobes: Add LoongArch support arch/loongarch/Kconfig | 2 + arch/loongarch/include/asm/inst.h | 22 ++ arch/loongarch/include/asm/kprobes.h | 54 +++++ arch/loongarch/include/asm/ptrace.h | 1 + arch/loongarch/kernel/Makefile | 2 + arch/loongarch/kernel/inst.c | 123 +++++++++++ arch/loongarch/kernel/kprobes.c | 325 +++++++++++++++++++++++++++++ arch/loongarch/kernel/kprobes_trampoline.S | 96 +++++++++ arch/loongarch/kernel/traps.c | 6 +- arch/loongarch/mm/fault.c | 4 + samples/kprobes/kprobe_example.c | 8 + 11 files changed, 639 insertions(+), 4 deletions(-) create mode 100644 arch/loongarch/include/asm/kprobes.h create mode 100644 arch/loongarch/kernel/kprobes.c create mode 100644 arch/loongarch/kernel/kprobes_trampoline.S