From patchwork Fri Jan 27 11:39:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Suzuki K Poulose X-Patchwork-Id: 13118535 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 6002AC38142 for ; Fri, 27 Jan 2023 12:02:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=YViJ6YmVwxMzMaw5NRPeyrx5ttmqFufaYgPjFn5XuhY=; b=sueF3qdlRDh8+c rvFf/I8CdPJhksiesY2l9LSOjmviIPNBItkoSdTHd9jM2ElmqbVtgH/Tg4BkaLmA0YJZAVWkskgSE sS2V1z566+AXj2Xe8586YJPL6vhVea/ahDPy8PoXzZe5QWAKGGMz/KQIdGxF+uM8L7DOPQXSkdEYP laNynlQhAwilwVRAx7Upe2hGZHKDVEhuVNwwQRbpV4teqCZigbwZoHbJjXcY80xusVQdcUZIOuO9X 7TJFp3UFQvd2YOwL/IZIJ47ugR+rVbFjIlPOMu89vYiPGxBXIIPWUJKApOAE4cKQeH3PN3l7LTrp0 IoaNka1jjj/t2lBvgkZQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pLNPf-00EMJA-AD; Fri, 27 Jan 2023 12:01:00 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pLN5Q-00ECld-67 for linux-arm-kernel@lists.infradead.org; Fri, 27 Jan 2023 11:40:05 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 2471D1684; Fri, 27 Jan 2023 03:40:45 -0800 (PST) Received: from ewhatever.cambridge.arm.com (ewhatever.cambridge.arm.com [10.1.197.1]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 911713F64C; Fri, 27 Jan 2023 03:40:00 -0800 (PST) From: Suzuki K Poulose To: kvm@vger.kernel.org, kvmarm@lists.linux.dev Cc: suzuki.poulose@arm.com, Alexandru Elisei , Andrew Jones , Christoffer Dall , Fuad Tabba , Jean-Philippe Brucker , Joey Gouly , Marc Zyngier , Mark Rutland , Oliver Upton , Paolo Bonzini , Quentin Perret , Steven Price , Thomas Huth , Will Deacon , Zenghui Yu , linux-coco@lists.linux.dev, kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [RFC kvmtool 05/31] arm64: Check pvtime support against the KVM instance Date: Fri, 27 Jan 2023 11:39:06 +0000 Message-Id: <20230127113932.166089-6-suzuki.poulose@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230127113932.166089-1-suzuki.poulose@arm.com> References: <20230127112248.136810-1-suzuki.poulose@arm.com> <20230127113932.166089-1-suzuki.poulose@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230127_034004_314004_F29F3276 X-CRM114-Status: GOOD ( 10.89 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org KVM_CAP_STEAL_TIME can be checked against a VM instance. To allow controlling the feature depending on the VM type, use the cap against the VM. Signed-off-by: Suzuki K Poulose --- arm/aarch64/pvtime.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arm/aarch64/pvtime.c b/arm/aarch64/pvtime.c index 2933ac7c..839aa8a7 100644 --- a/arm/aarch64/pvtime.c +++ b/arm/aarch64/pvtime.c @@ -58,8 +58,8 @@ int kvm_cpu__setup_pvtime(struct kvm_cpu *vcpu) if (kvm_cfg->no_pvtime) return 0; - has_stolen_time = kvm__supports_extension(vcpu->kvm, - KVM_CAP_STEAL_TIME); + has_stolen_time = kvm__supports_vm_extension(vcpu->kvm, + KVM_CAP_STEAL_TIME); if (!has_stolen_time) { kvm_cfg->no_pvtime = true; return 0;