From mboxrd@z Thu Jan 1 00:00:00 1970 From: gengdongjiu Subject: Re: [PATCH v4 00/21] SError rework + RAS&IESB for firmware first support Date: Wed, 15 Nov 2017 17:15:07 +0800 Message-ID: References: <20171019145807.23251-1-james.morse@arm.com> <5A049B20.6000501@arm.com> <20171113112946.GK14144@cbox> <5A0B13B5.3000205@arm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 14C2449D6E for ; Wed, 15 Nov 2017 04:13:43 -0500 (EST) Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 5HshiaybN2j2 for ; Wed, 15 Nov 2017 04:13:42 -0500 (EST) Received: from szxga05-in.huawei.com (szxga05-in.huawei.com [45.249.212.191]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id A8C7C49D57 for ; Wed, 15 Nov 2017 04:13:40 -0500 (EST) In-Reply-To: <5A0B13B5.3000205@arm.com> Content-Language: en-US List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu To: James Morse , Christoffer Dall Cc: Jonathan.Zhang@cavium.com, Marc Zyngier , Catalin Marinas , Julien Thierry , Will Deacon , wangxiongfeng2@huawei.com, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu List-Id: kvmarm@lists.cs.columbia.edu Hi james, On 2017/11/15 0:03, James Morse wrote: >> Hope this helps? > Yes, I'll go looking for a way to expose VSESR_EL2 to user-space. what is the purpose to expose VSESR_EL2? do you mean set its value after migration? May be we can use similar below Mechanism https://www.spinics.net/lists/arm-kernel/msg603525.html when user-space sync the register status, it will get these register value. it will reuse the IOCTL KVM_GET_ONE_REG and no need to add extra API. > > > Thanks! > > James