From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 3568D1FB3; Fri, 3 Mar 2023 09:54:53 +0000 (UTC) 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 9F9C62F4; Fri, 3 Mar 2023 01:55:35 -0800 (PST) Received: from [10.57.90.45] (unknown [10.57.90.45]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 9ED7B3F587; Fri, 3 Mar 2023 01:54:48 -0800 (PST) Message-ID: <1c91b777-982e-e71a-4829-51744e9555c5@arm.com> Date: Fri, 3 Mar 2023 09:54:47 +0000 Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:102.0) Gecko/20100101 Thunderbird/102.7.2 Subject: Re: [RFC] Support for Arm CCA VMs on Linux To: Jean-Philippe Brucker , Itaru Kitayama Cc: linux-coco@lists.linux.dev, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, Alexandru Elisei , Andrew Jones , Catalin Marinas , Chao Peng , Christoffer Dall , Fuad Tabba , James Morse , Joey Gouly , Marc Zyngier , Mark Rutland , Oliver Upton , Paolo Bonzini , Quentin Perret , Sean Christopherson , Steven Price , Thomas Huth , Will Deacon , Zenghui Yu , kvmarm@lists.cs.columbia.edu References: <20230127112248.136810-1-suzuki.poulose@arm.com> <20230303094618.GC361458@myrica> From: Suzuki K Poulose In-Reply-To: <20230303094618.GC361458@myrica> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 03/03/2023 09:46, Jean-Philippe Brucker wrote: > On Thu, Mar 02, 2023 at 07:12:24AM +0900, Itaru Kitayama wrote: >>>> I've tried your series in Real on CCA Host, but the KVM arch init >>>> emits an Invalid argument error and terminates. > > This was the KVM_SET_ONE_REG for the SVE vector size. During my tests I > didn't enable SVE in the host but shrinkwrap enables more options. Does the Qemu check for SVE capability on /dev/kvm ? For kvmtool, we changed to using the VM instance and that would prevent using SVE, until the RMM supports it. Suzuki > > Until we figure out support for SVE, disable it on the QEMU command-line > (similarly to '--disable-sve' needed for kvmtool boot): > > -cpu host,sve=off > > Thanks, > Jean From mboxrd@z Thu Jan 1 00:00:00 1970 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 10487C678D4 for ; Fri, 3 Mar 2023 09:55:57 +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-Type: Content-Transfer-Encoding:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:From:References:Cc:To:Subject: MIME-Version:Date:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=13zRAvclQnQgMT71JLUPNVv6Zt3olrOhEcljF3HbDPs=; b=y8zEeiu8jP80On u6Mlwij2wwEtXD2tMkkKMdwgpP7AMHztBKwX5pALv54YXSSODH+zk55p1McgKquUY1bXrx2YAbnzz tekS7OUxwfbKxiZ8kpLI/FvtzldUz4Z9O5STQPysxyEbhxwyfQajU7cmbIUKdmg2ezmMrHpTnafBB 2RKvgUB9ewKb+wtGUfXgoAVzVqtcDyRAvRg4QcDcPxuS+BAEq0i3+IopVfxK31NCHiqsW0pIbB0jm AccPTEPNMFmXDXXp/0d4rlqj7PAxacUc/WnPrLQaKAXi5yxWTnRNaNtRtkaqWqxU5DvK80+3SJ3Xh 6uG/D/WFmfrpUnT1UEaw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pY27w-005tiy-Vx; Fri, 03 Mar 2023 09:55:01 +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 1pY27t-005ti7-HF for linux-arm-kernel@lists.infradead.org; Fri, 03 Mar 2023 09:54:59 +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 9F9C62F4; Fri, 3 Mar 2023 01:55:35 -0800 (PST) Received: from [10.57.90.45] (unknown [10.57.90.45]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 9ED7B3F587; Fri, 3 Mar 2023 01:54:48 -0800 (PST) Message-ID: <1c91b777-982e-e71a-4829-51744e9555c5@arm.com> Date: Fri, 3 Mar 2023 09:54:47 +0000 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:102.0) Gecko/20100101 Thunderbird/102.7.2 Subject: Re: [RFC] Support for Arm CCA VMs on Linux To: Jean-Philippe Brucker , Itaru Kitayama Cc: linux-coco@lists.linux.dev, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, Alexandru Elisei , Andrew Jones , Catalin Marinas , Chao Peng , Christoffer Dall , Fuad Tabba , James Morse , Joey Gouly , Marc Zyngier , Mark Rutland , Oliver Upton , Paolo Bonzini , Quentin Perret , Sean Christopherson , Steven Price , Thomas Huth , Will Deacon , Zenghui Yu , kvmarm@lists.cs.columbia.edu References: <20230127112248.136810-1-suzuki.poulose@arm.com> <20230303094618.GC361458@myrica> From: Suzuki K Poulose In-Reply-To: <20230303094618.GC361458@myrica> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230303_015457_666599_047929B9 X-CRM114-Status: GOOD ( 11.61 ) 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: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 03/03/2023 09:46, Jean-Philippe Brucker wrote: > On Thu, Mar 02, 2023 at 07:12:24AM +0900, Itaru Kitayama wrote: >>>> I've tried your series in Real on CCA Host, but the KVM arch init >>>> emits an Invalid argument error and terminates. > > This was the KVM_SET_ONE_REG for the SVE vector size. During my tests I > didn't enable SVE in the host but shrinkwrap enables more options. Does the Qemu check for SVE capability on /dev/kvm ? For kvmtool, we changed to using the VM instance and that would prevent using SVE, until the RMM supports it. Suzuki > > Until we figure out support for SVE, disable it on the QEMU command-line > (similarly to '--disable-sve' needed for kvmtool boot): > > -cpu host,sve=off > > Thanks, > Jean _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel