From nobody Fri Apr 4 22:55:20 2025 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 Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1739764776357643.1968748177829; Sun, 16 Feb 2025 19:59:36 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tjsGD-0001TE-7J; Sun, 16 Feb 2025 22:57:33 -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 1tjsGB-0001SQ-Ej for qemu-devel@nongnu.org; Sun, 16 Feb 2025 22:57:31 -0500 Received: from mail.loongson.cn ([114.242.206.163]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tjsG7-0006r7-Ht for qemu-devel@nongnu.org; Sun, 16 Feb 2025 22:57:31 -0500 Received: from loongson.cn (unknown [10.2.5.213]) by gateway (Coremail) with SMTP id _____8CxbWugs7Jns154AA--.11511S3; Mon, 17 Feb 2025 11:57:20 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.213]) by front1 (Coremail) with SMTP id qMiowMBxn8Wfs7JnbXwXAA--.24352S8; Mon, 17 Feb 2025 11:57:20 +0800 (CST) From: Bibo Mao To: Song Gao Cc: qemu-devel@nongnu.org, lixianglai Subject: [PATCH 6/8] target/loongarch: Add CPU property for kvm steal time feature Date: Mon, 17 Feb 2025 11:57:16 +0800 Message-Id: <20250217035718.3977137-7-maobibo@loongson.cn> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20250217035718.3977137-1-maobibo@loongson.cn> References: <20250217035718.3977137-1-maobibo@loongson.cn> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: qMiowMBxn8Wfs7JnbXwXAA--.24352S8 X-CM-SenderInfo: xpdruxter6z05rqj20fqof0/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== 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=114.242.206.163; envelope-from=maobibo@loongson.cn; helo=mail.loongson.cn 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_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1739764777866019000 Content-Type: text/plain; charset="utf-8" Property kvm-steal-time is added for kvm steal time feature, it is specially for kvm mode. Signed-off-by: Bibo Mao --- target/loongarch/cpu.h | 1 + target/loongarch/kvm/kvm.c | 18 ++++++++++++++++++ 2 files changed, 19 insertions(+) diff --git a/target/loongarch/cpu.h b/target/loongarch/cpu.h index 38bb27a2b8..d304d1dc57 100644 --- a/target/loongarch/cpu.h +++ b/target/loongarch/cpu.h @@ -409,6 +409,7 @@ struct ArchCPU { OnOffAuto lsx; OnOffAuto lasx; OnOffAuto kvm_pv_ipi; + OnOffAuto kvm_steal_time; =20 /* 'compatible' string for this CPU for Linux device trees */ const char *dtb_compatible; diff --git a/target/loongarch/kvm/kvm.c b/target/loongarch/kvm/kvm.c index 6ec3979095..0e770c485b 100644 --- a/target/loongarch/kvm/kvm.c +++ b/target/loongarch/kvm/kvm.c @@ -1115,6 +1115,18 @@ static void kvm_pv_ipi_set(Object *obj, bool value, = Error **errp) cpu->kvm_pv_ipi =3D value ? ON_OFF_AUTO_ON : ON_OFF_AUTO_OFF; } =20 +static bool kvm_steal_time_get(Object *obj, Error **errp) +{ + return LOONGARCH_CPU(obj)->kvm_steal_time !=3D ON_OFF_AUTO_OFF; +} + +static void kvm_steal_time_set(Object *obj, bool value, Error **errp) +{ + LoongArchCPU *cpu =3D LOONGARCH_CPU(obj); + + cpu->kvm_steal_time =3D value ? ON_OFF_AUTO_ON : ON_OFF_AUTO_OFF; +} + void kvm_loongarch_cpu_post_init(LoongArchCPU *cpu) { cpu->lbt =3D ON_OFF_AUTO_AUTO; @@ -1134,6 +1146,12 @@ void kvm_loongarch_cpu_post_init(LoongArchCPU *cpu) kvm_pv_ipi_set); object_property_set_description(OBJECT(cpu), "kvm-pv-ipi", "Set off to disable KVM paravirt IPI."= ); + + cpu->kvm_steal_time =3D ON_OFF_AUTO_AUTO; + object_property_add_bool(OBJECT(cpu), "kvm-steal-time", kvm_steal_time= _get, + kvm_steal_time_set); + object_property_set_description(OBJECT(cpu), "kvm-steal-time", + "Set off to disable KVM steal time."); } =20 int kvm_arch_destroy_vcpu(CPUState *cs) --=20 2.39.3