From patchwork Thu Dec 21 09:49:22 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chao Du X-Patchwork-Id: 13501537 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C3BE7C35274 for ; Thu, 21 Dec 2023 09:52:19 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rGFht-0006RF-Jo; Thu, 21 Dec 2023 04:51:09 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rGFhb-0006NI-RF; Thu, 21 Dec 2023 04:50:53 -0500 Received: from zg8tmty3ljk5ljewns4xndka.icoremail.net ([167.99.105.149]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rGFhY-0002XA-SD; Thu, 21 Dec 2023 04:50:50 -0500 Received: from localhost.localdomain (unknown [10.12.130.31]) by app1 (Coremail) with SMTP id TAJkCgAHk_0TCoRlUowCAA--.24821S7; Thu, 21 Dec 2023 17:49:12 +0800 (CST) From: Chao Du To: qemu-devel@nongnu.org, qemu-riscv@nongnu.org, pbonzini@redhat.com, alistair23@gmail.com, bin.meng@windriver.com, liweiwei@iscas.ac.cn, dbarboza@ventanamicro.com, zhiwei_liu@linux.alibaba.com, palmer@dabbelt.com, anup@brainfault.org, atishp@atishpatra.org Subject: [RFC PATCH 3/4] target/riscv/kvm: handle the exit with debug reason Date: Thu, 21 Dec 2023 09:49:22 +0000 Message-Id: <20231221094923.7349-4-duchao@eswincomputing.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20231221094923.7349-1-duchao@eswincomputing.com> References: <20231221094923.7349-1-duchao@eswincomputing.com> X-CM-TRANSID: TAJkCgAHk_0TCoRlUowCAA--.24821S7 X-Coremail-Antispam: 1UD129KBjvJXoWrtrWUXrWxKF45Jw1UGFyrtFb_yoW8JF18pF 45Cay5Crs3J347Gw4SvFWkAF13Ars7urZ8J3y7KaySqw43trWrWr1vg39IyFWrJFyfWF4a yF47Zr13CF4Utr7anT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUP2b7Iv0xC_Zr1lb4IE77IF4wAFF20E14v26rWj6s0DM7CY07I2 0VC2zVCF04k26cxKx2IYs7xG6rWj6s0DM7CIcVAFz4kK6r1j6r18M28IrcIa0xkI8VA2jI 8067AKxVWUWwA2048vs2IY020Ec7CjxVAFwI0_Xr0E3s1l8cAvFVAK0II2c7xJM28CjxkF 64kEwVA0rcxSw2x7M28EF7xvwVC0I7IYx2IY67AKxVWDJVCq3wA2z4x0Y4vE2Ix0cI8IcV CY1x0267AKxVW8Jr0_Cr1UM28EF7xvwVC2z280aVAFwI0_GcCE3s1l84ACjcxK6I8E87Iv 6xkF7I0E14v26rxl6s0DM2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI64kE6c 02F40Ex7xfMcIj6xIIjxv20xvE14v26r1j6r18McIj6I8E87Iv67AKxVWUJVW8JwAm72CE 4IkC6x0Yz7v_Jr0_Gr1lF7xvr2IYc2Ij64vIr41lFIxGxcIEc7CjxVA2Y2ka0xkIwI1lc2 xSY4AK6svPMxAIw28IcxkI7VAKI48JMxC20s026xCaFVCjc4AY6r1j6r4UMI8I3I0E5I8C rVAFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE17CEb7AF67AKxVWUtVW8Zw CIc40Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r1j6r1xMIIF0xvE2Ix0cI8IcVCY1x02 67AKxVW8JVWxJwCI42IY6xAIw20EY4v20xvaj40_Jr0_JF4lIxAIcVC2z280aVAFwI0_Jr 0_Gr1lIxAIcVC2z280aVCY1x0267AKxVW8JVW8JrUvcSsGvfC2KfnxnUUI43ZEXa7IU8Sf O7UUUUU== X-CM-SenderInfo: xgxfxt3r6h245lqf0zpsxwx03jof0z/ Received-SPF: pass client-ip=167.99.105.149; envelope-from=duchao@eswincomputing.com; helo=zg8tmty3ljk5ljewns4xndka.icoremail.net X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org If the breakpoint belongs to the userspace then set the ret value. Signed-off-by: Chao Du --- target/riscv/kvm/kvm-cpu.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/target/riscv/kvm/kvm-cpu.c b/target/riscv/kvm/kvm-cpu.c index 94697b09bb..b1aed78780 100644 --- a/target/riscv/kvm/kvm-cpu.c +++ b/target/riscv/kvm/kvm-cpu.c @@ -1213,6 +1213,21 @@ static int kvm_riscv_handle_sbi(CPUState *cs, struct kvm_run *run) return ret; } +static bool kvm_riscv_handle_debug(CPUState *cs) +{ + RISCVCPU *cpu = RISCV_CPU(cs); + CPURISCVState *env = &cpu->env; + + /* Ensure PC is synchronised */ + kvm_cpu_synchronize_state(cs); + + if (kvm_find_sw_breakpoint(cs, env->pc)) { + return true; + } + + return false; +} + int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run) { int ret = 0; @@ -1220,6 +1235,11 @@ int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run) case KVM_EXIT_RISCV_SBI: ret = kvm_riscv_handle_sbi(cs, run); break; + case KVM_EXIT_DEBUG: + if (kvm_riscv_handle_debug(cs)) { + ret = EXCP_DEBUG; + } + break; default: qemu_log_mask(LOG_UNIMP, "%s: un-handled exit reason %d\n", __func__, run->exit_reason);