From nobody Mon Feb 9 18:44:59 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=huawei.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1629171447422705.0823166271239; Mon, 16 Aug 2021 20:37:27 -0700 (PDT) Received: from localhost ([::1]:56362 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mFpun-0004xL-G5 for importer@patchew.org; Mon, 16 Aug 2021 23:37:25 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:48628) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mFpj5-0008Rr-Vc; Mon, 16 Aug 2021 23:25:20 -0400 Received: from szxga08-in.huawei.com ([45.249.212.255]:2285) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mFpj3-0005qf-Bf; Mon, 16 Aug 2021 23:25:19 -0400 Received: from dggemv704-chm.china.huawei.com (unknown [172.30.72.54]) by szxga08-in.huawei.com (SkyGuard) with ESMTP id 4Gpbxb6szlz1CXGT; Tue, 17 Aug 2021 11:24:51 +0800 (CST) Received: from dggpemm000001.china.huawei.com (7.185.36.245) by dggemv704-chm.china.huawei.com (10.3.19.47) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Tue, 17 Aug 2021 11:25:14 +0800 Received: from huawei.com (10.174.186.236) by dggpemm000001.china.huawei.com (7.185.36.245) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Tue, 17 Aug 2021 11:25:13 +0800 From: Yifei Jiang To: , Subject: [PATCH RFC v6 11/12] target/riscv: Implement virtual time adjusting with vm state changing Date: Tue, 17 Aug 2021 11:24:46 +0800 Message-ID: <20210817032447.2055-12-jiangyifei@huawei.com> X-Mailer: git-send-email 2.26.2.windows.1 In-Reply-To: <20210817032447.2055-1-jiangyifei@huawei.com> References: <20210817032447.2055-1-jiangyifei@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Originating-IP: [10.174.186.236] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To dggpemm000001.china.huawei.com (7.185.36.245) X-CFilter-Loop: Reflected Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=45.249.212.255; envelope-from=jiangyifei@huawei.com; helo=szxga08-in.huawei.com X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: bin.meng@windriver.com, limingwang@huawei.com, kvm@vger.kernel.org, libvir-list@redhat.com, anup.patel@wdc.com, Yifei Jiang , Alistair.Francis@wdc.com, kvm-riscv@lists.infradead.org, wanghaibin.wang@huawei.com, palmer@dabbelt.com, fanliang@huawei.com, wu.wubin@huawei.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZM-MESSAGEID: 1629171449663100001 Content-Type: text/plain; charset="utf-8" We hope that virtual time adjusts with vm state changing. When a vm is stopped, guest virtual time should stop counting and kvm_timer should be stopped. When the vm is resumed, guest virtual time should continue to count and kvm_timer should be restored. Signed-off-by: Yifei Jiang Signed-off-by: Mingwang Li --- target/riscv/kvm.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/target/riscv/kvm.c b/target/riscv/kvm.c index d1ab4b1247..60c61ba924 100644 --- a/target/riscv/kvm.c +++ b/target/riscv/kvm.c @@ -40,6 +40,7 @@ #include "kvm_riscv.h" #include "sbi_ecall_interface.h" #include "chardev/char-fe.h" +#include "sysemu/runstate.h" =20 static uint64_t kvm_riscv_reg_id(CPURISCVState *env, uint64_t type, uint64= _t idx) { @@ -447,6 +448,17 @@ unsigned long kvm_arch_vcpu_id(CPUState *cpu) return cpu->cpu_index; } =20 +static void kvm_riscv_vm_state_change(void *opaque, bool running, RunState= state) +{ + CPUState *cs =3D opaque; + + if (running) { + kvm_riscv_put_regs_timer(cs); + } else { + kvm_riscv_get_regs_timer(cs); + } +} + void kvm_arch_init_irq_routing(KVMState *s) { } @@ -459,6 +471,8 @@ int kvm_arch_init_vcpu(CPUState *cs) CPURISCVState *env =3D &cpu->env; uint64_t id; =20 + qemu_add_vm_change_state_handler(kvm_riscv_vm_state_change, cs); + id =3D kvm_riscv_reg_id(env, KVM_REG_RISCV_CONFIG, KVM_REG_RISCV_CONFI= G_REG(isa)); ret =3D kvm_get_one_reg(cs, id, &isa); if (ret) { --=20 2.19.1