From patchwork Thu May 23 03:10:21 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: maobibo X-Patchwork-Id: 13671229 Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 8155D13A879; Thu, 23 May 2024 03:10:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=114.242.206.163 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716433834; cv=none; b=qaMggitN20Gy4m0qYB+vXk4CvlwCF8LV1c25xEZ4PTXDFCdnUaQxzz2ALwAKHAOH4YiS930DwtXaz3he2G9fQrCHYtb1AsvwQvmWV+RlxTJgA2HfUJ+5ZnqcQzQZtAPm350k8N2KGGsOu7ECN5sjzsftv1m9Ok4rOCvughVzENE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716433834; c=relaxed/simple; bh=EBDVXOmgMgfl8zYiYQw+LxzSeEjy1MIY+uBc1KG6b70=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=NA9BwWeXQRZMBAFKAXI/NrjDZaIqq7ZyRqLNIFrrFv+kvfzQfGu9LPoH2hJb6i+0Ig1ES7uicBlpz2fvX7ZeBVsm7e2R1PrnIA4VxDfiFI/+T7U9D+QWQck05q0KdOkI1jaczmqQUnfLc67XikwvvpHMYsU/XJpg54c/LaL/+L8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn; spf=pass smtp.mailfrom=loongson.cn; arc=none smtp.client-ip=114.242.206.163 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=loongson.cn Received: from loongson.cn (unknown [10.2.5.213]) by gateway (Coremail) with SMTP id _____8DxOOqgs05mWeQCAA--.2761S3; Thu, 23 May 2024 11:10:24 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.213]) by localhost.localdomain (Coremail) with SMTP id AQAAf8DxNMWfs05mCEQGAA--.6973S4; Thu, 23 May 2024 11:10:23 +0800 (CST) From: Bibo Mao To: Tianrui Zhao , Huacai Chen Cc: WANG Xuerui , kvm@vger.kernel.org, loongarch@lists.linux.dev, linux-kernel@vger.kernel.org Subject: [PATCH v2 2/4] LoongArch: KVM: Add LBT feature detection with cpucfg Date: Thu, 23 May 2024 11:10:21 +0800 Message-Id: <20240523031023.709347-3-maobibo@loongson.cn> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20240523031023.709347-1-maobibo@loongson.cn> References: <20240523031023.709347-1-maobibo@loongson.cn> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CM-TRANSID: AQAAf8DxNMWfs05mCEQGAA--.6973S4 X-CM-SenderInfo: xpdruxter6z05rqj20fqof0/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== Loongson Binary Translation (LBT) feature is defined in register cpucfg2. Here LBT capability detection for VM is added. Signed-off-by: Bibo Mao --- arch/loongarch/kvm/vcpu.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/loongarch/kvm/vcpu.c b/arch/loongarch/kvm/vcpu.c index 8f80d1a2dcbb..c32aff8e261e 100644 --- a/arch/loongarch/kvm/vcpu.c +++ b/arch/loongarch/kvm/vcpu.c @@ -537,6 +537,12 @@ static int _kvm_get_cpucfg_mask(int id, u64 *v) *v |= CPUCFG2_LSX; if (cpu_has_lasx) *v |= CPUCFG2_LASX; + if (cpu_has_lbt_x86) + *v |= CPUCFG2_X86BT; + if (cpu_has_lbt_arm) + *v |= CPUCFG2_ARMBT; + if (cpu_has_lbt_mips) + *v |= CPUCFG2_MIPSBT; return 0; case LOONGARCH_CPUCFG3: