From nobody Fri Dec 19 14:10:41 2025 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id EC3B1C83F10 for ; Thu, 31 Aug 2023 08:31:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241896AbjHaIbK (ORCPT ); Thu, 31 Aug 2023 04:31:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58334 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245672AbjHaIan (ORCPT ); Thu, 31 Aug 2023 04:30:43 -0400 Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id B7431CF2; Thu, 31 Aug 2023 01:30:35 -0700 (PDT) Received: from loongson.cn (unknown [10.2.5.185]) by gateway (Coremail) with SMTP id _____8DxBfGmT_BkPl4dAA--.60183S3; Thu, 31 Aug 2023 16:30:30 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.185]) by localhost.localdomain (Coremail) with SMTP id AQAAf8Ax3c6gT_BkOPVnAA--.55892S12; Thu, 31 Aug 2023 16:30:29 +0800 (CST) From: Tianrui Zhao To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org Cc: Paolo Bonzini , Huacai Chen , WANG Xuerui , Greg Kroah-Hartman , loongarch@lists.linux.dev, Jens Axboe , Mark Brown , Alex Deucher , Oliver Upton , maobibo@loongson.cn, Xi Ruoyao , zhaotianrui@loongson.cn Subject: [PATCH v20 10/30] LoongArch: KVM: Implement vcpu ENABLE_CAP ioctl interface Date: Thu, 31 Aug 2023 16:30:00 +0800 Message-Id: <20230831083020.2187109-11-zhaotianrui@loongson.cn> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230831083020.2187109-1-zhaotianrui@loongson.cn> References: <20230831083020.2187109-1-zhaotianrui@loongson.cn> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: AQAAf8Ax3c6gT_BkOPVnAA--.55892S12 X-CM-SenderInfo: p2kd03xldq233l6o00pqjv00gofq/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Implement LoongArch vcpu KVM_ENABLE_CAP ioctl interface. Reviewed-by: Bibo Mao Signed-off-by: Tianrui Zhao --- arch/loongarch/kvm/vcpu.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/arch/loongarch/kvm/vcpu.c b/arch/loongarch/kvm/vcpu.c index f17422a942..be0c17a433 100644 --- a/arch/loongarch/kvm/vcpu.c +++ b/arch/loongarch/kvm/vcpu.c @@ -187,6 +187,16 @@ int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu= , struct kvm_regs *regs) return 0; } =20 +static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu, + struct kvm_enable_cap *cap) +{ + /* + * FPU is enable by default, do not support any other caps, + * and later we will support such as LSX cap. + */ + return -EINVAL; +} + long kvm_arch_vcpu_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg) { @@ -210,6 +220,15 @@ long kvm_arch_vcpu_ioctl(struct file *filp, r =3D _kvm_get_reg(vcpu, ®); break; } + case KVM_ENABLE_CAP: { + struct kvm_enable_cap cap; + + r =3D -EFAULT; + if (copy_from_user(&cap, argp, sizeof(cap))) + break; + r =3D kvm_vcpu_ioctl_enable_cap(vcpu, &cap); + break; + } default: r =3D -ENOIOCTLCMD; break; --=20 2.27.0