From patchwork Fri Jun 9 09:04:58 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: zhaotianrui X-Patchwork-Id: 13273517 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 12375C87FDE for ; Fri, 9 Jun 2023 09:06:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240790AbjFIJGY (ORCPT ); Fri, 9 Jun 2023 05:06:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34238 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241187AbjFIJF7 (ORCPT ); Fri, 9 Jun 2023 05:05:59 -0400 Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 5FFB52685; Fri, 9 Jun 2023 02:05:51 -0700 (PDT) Received: from loongson.cn (unknown [10.2.5.185]) by gateway (Coremail) with SMTP id _____8DxSupu64Jk2_sAAA--.2995S3; Fri, 09 Jun 2023 17:05:50 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.185]) by localhost.localdomain (Coremail) with SMTP id AQAAf8DxluRO64JkSXEKAA--.31854S7; Fri, 09 Jun 2023 17:05:49 +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, tangyouling@loongson.cn Subject: [PATCH v13 10/30] LoongArch: KVM: Implement vcpu ENABLE_CAP ioctl interface Date: Fri, 9 Jun 2023 17:04:58 +0800 Message-Id: <20230609090518.2130926-11-zhaotianrui@loongson.cn> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230609090518.2130926-1-zhaotianrui@loongson.cn> References: <20230609090518.2130926-1-zhaotianrui@loongson.cn> MIME-Version: 1.0 X-CM-TRANSID: AQAAf8DxluRO64JkSXEKAA--.31854S7 X-CM-SenderInfo: p2kd03xldq233l6o00pqjv00gofq/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Implement LoongArch vcpu KVM_ENABLE_CAP ioctl interface. 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 b0cce413762d..da97b77da8eb 100644 --- a/arch/loongarch/kvm/vcpu.c +++ b/arch/loongarch/kvm/vcpu.c @@ -186,6 +186,16 @@ int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) return 0; } +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) { @@ -209,6 +219,15 @@ long kvm_arch_vcpu_ioctl(struct file *filp, r = _kvm_get_reg(vcpu, ®); break; } + case KVM_ENABLE_CAP: { + struct kvm_enable_cap cap; + + r = -EFAULT; + if (copy_from_user(&cap, argp, sizeof(cap))) + break; + r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap); + break; + } default: r = -ENOIOCTLCMD; break;