From nobody Mon Feb 9 16:45:23 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 ARC-Seal: i=1; a=rsa-sha256; t=1607000646; cv=none; d=zohomail.com; s=zohoarc; b=bauLupr21P8vHDENPcDzGgLyd+5hPiK/9RTE23sO/iqgTFvBrYaIov6Jo+GeFeGdppTpB3Yq8h8gCPLnVqwP6qQE8g90bQjjVDmU+f1AebTS87mxmFBCU6JFiiRWfy16Emh+dQmMUR4giin31hGFLOQ83cJxGgvqssQQKmxuLl4= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1607000646; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=QDZw3zHHrbdHYqI0yOJd4uFWYFc/9D4E1IZb/V+pynk=; b=EDmWJpNu4KT8miED/dBqdppsuAx7m+JMIjW8hoRgUfjnINTIZGHH52MLer6Xwxg9mZzt4Dl+X3c3+WTRK2aMEL8eP4y40jB9/CPYIIUMH0vRjqULoFADGt2VEvELad5YReoTvzR9PlIjDGnlgvmsp8ohBhSagzj/rPWL5xNOF+E= ARC-Authentication-Results: i=1; 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 Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1607000646318935.3803330716069; Thu, 3 Dec 2020 05:04:06 -0800 (PST) Received: from localhost ([::1]:36392 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kkoHC-0008M8-Sw for importer@patchew.org; Thu, 03 Dec 2020 08:04:02 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:45290) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kko1d-0004jn-Ih; Thu, 03 Dec 2020 07:47:57 -0500 Received: from szxga04-in.huawei.com ([45.249.212.190]:2880) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kko1b-0006zB-Lk; Thu, 03 Dec 2020 07:47:57 -0500 Received: from DGGEMS403-HUB.china.huawei.com (unknown [172.30.72.58]) by szxga04-in.huawei.com (SkyGuard) with ESMTP id 4CmwbK0by7z15X07; Thu, 3 Dec 2020 20:47:25 +0800 (CST) Received: from huawei.com (10.174.186.236) by DGGEMS403-HUB.china.huawei.com (10.3.19.203) with Microsoft SMTP Server id 14.3.487.0; Thu, 3 Dec 2020 20:47:42 +0800 From: Yifei Jiang To: , Subject: [PATCH RFC v4 15/15] target/riscv: Add time frequency migration support Date: Thu, 3 Dec 2020 20:47:03 +0800 Message-ID: <20201203124703.168-16-jiangyifei@huawei.com> X-Mailer: git-send-email 2.26.2.windows.1 In-Reply-To: <20201203124703.168-1-jiangyifei@huawei.com> References: <20201203124703.168-1-jiangyifei@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Originating-IP: [10.174.186.236] 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=45.249.212.190; envelope-from=jiangyifei@huawei.com; helo=szxga04-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, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, 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: victor.zhangxiaofeng@huawei.com, sagark@eecs.berkeley.edu, kvm@vger.kernel.org, libvir-list@redhat.com, kbastian@mail.uni-paderborn.de, anup.patel@wdc.com, yinyipeng1@huawei.com, Alistair.Francis@wdc.com, Yifei Jiang , kvm-riscv@lists.infradead.org, palmer@dabbelt.com, dengkai1@huawei.com, wu.wubin@huawei.com, zhang.zhanghailiang@huawei.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" If vcpu's time frequency is not specified by CPU option 'time-frequency' on the destination, the time frequency of destination will follow the source. If vcpu's time frequency specified by CPU option 'time-frequency' on the destination is different from migrated time frequency. The migration will be abort. Signed-off-by: Yifei Jiang Signed-off-by: Yipeng Yin --- target/riscv/machine.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/target/riscv/machine.c b/target/riscv/machine.c index ef2d5395a8..6955542fef 100644 --- a/target/riscv/machine.c +++ b/target/riscv/machine.c @@ -144,6 +144,13 @@ static int cpu_post_load(void *opaque, int version_id) CPURISCVState *env =3D &cpu->env; =20 env->kvm_timer_dirty =3D true; + + if (env->user_frequency && env->user_frequency !=3D env->frequency) { + error_report("Mismatch between user-specified time frequency and " + "migrated time frequency"); + return -EINVAL; + } + return 0; } =20 @@ -198,6 +205,7 @@ const VMStateDescription vmstate_riscv_cpu =3D { VMSTATE_UINT64(env.kvm_timer_time, RISCVCPU), VMSTATE_UINT64(env.kvm_timer_compare, RISCVCPU), VMSTATE_UINT64(env.kvm_timer_state, RISCVCPU), + VMSTATE_UINT64(env.frequency, RISCVCPU), =20 VMSTATE_END_OF_LIST() }, --=20 2.19.1