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 X-Spam-Level: X-Spam-Status: No, score=-5.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F2EA5C433FF for ; Mon, 5 Aug 2019 13:16:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CD59520679 for ; Mon, 5 Aug 2019 13:16:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729864AbfHENQh (ORCPT ); Mon, 5 Aug 2019 09:16:37 -0400 Received: from foss.arm.com ([217.140.110.172]:48146 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729505AbfHENGJ (ORCPT ); Mon, 5 Aug 2019 09:06:09 -0400 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 E280D337; Mon, 5 Aug 2019 06:06:08 -0700 (PDT) Received: from [10.1.196.133] (e112269-lin.cambridge.arm.com [10.1.196.133]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 4FEBA3F77D; Mon, 5 Aug 2019 06:06:07 -0700 (PDT) Subject: Re: [PATCH 1/9] KVM: arm64: Document PV-time interface To: Zenghui Yu Cc: kvm@vger.kernel.org, linux-doc@vger.kernel.org, Catalin Marinas , Russell King , linux-kernel@vger.kernel.org, Marc Zyngier , Paolo Bonzini , Will Deacon , kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org References: <20190802145017.42543-1-steven.price@arm.com> <20190802145017.42543-2-steven.price@arm.com> <3bdd764a-b6f5-d17e-a703-d8eb13838efc@huawei.com> From: Steven Price Message-ID: Date: Mon, 5 Aug 2019 14:06:06 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <3bdd764a-b6f5-d17e-a703-d8eb13838efc@huawei.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-GB Content-Transfer-Encoding: 8bit Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On 05/08/2019 04:23, Zenghui Yu wrote: > Hi Steven, > > On 2019/8/2 22:50, Steven Price wrote: >> Introduce a paravirtualization interface for KVM/arm64 based on the >> "Arm Paravirtualized Time for Arm-Base Systems" specification DEN 0057A. >> >> This only adds the details about "Stolen Time" as the details of "Live >> Physical Time" have not been fully agreed. >> >> User space can specify a reserved area of memory for the guest and >> inform KVM to populate the memory with information on time that the host >> kernel has stolen from the guest. >> >> A hypercall interface is provided for the guest to interrogate the >> hypervisor's support for this interface and the location of the shared >> memory structures. >> >> Signed-off-by: Steven Price >> --- >>   Documentation/virtual/kvm/arm/pvtime.txt | 107 +++++++++++++++++++++++ >>   1 file changed, 107 insertions(+) >>   create mode 100644 Documentation/virtual/kvm/arm/pvtime.txt >                                     ^^^^^^^ > This directory has been renamed recently, see: > > https://patchwork.ozlabs.org/patch/1136104/ Thanks for pointing that out - I'll move it in the next version. Steve