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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 3C54DC34050 for ; Wed, 19 Feb 2020 15:18:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0819724656 for ; Wed, 19 Feb 2020 15:18:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727515AbgBSPSg (ORCPT ); Wed, 19 Feb 2020 10:18:36 -0500 Received: from szxga05-in.huawei.com ([45.249.212.191]:10221 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727429AbgBSPSf (ORCPT ); Wed, 19 Feb 2020 10:18:35 -0500 Received: from DGGEMS413-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id 8FBB9C63BB00B34477CF; Wed, 19 Feb 2020 23:18:27 +0800 (CST) Received: from [127.0.0.1] (10.173.222.27) by DGGEMS413-HUB.china.huawei.com (10.3.19.213) with Microsoft SMTP Server id 14.3.439.0; Wed, 19 Feb 2020 23:18:19 +0800 Subject: Re: [PATCH v4 08/20] irqchip/gic-v4.1: Plumb get/set_irqchip_state SGI callbacks From: Zenghui Yu To: Marc Zyngier CC: , , , , Lorenzo Pieralisi , Jason Cooper , "Robert Richter" , Thomas Gleixner , "Eric Auger" , James Morse , "Julien Thierry" , Suzuki K Poulose References: <20200214145736.18550-1-maz@kernel.org> <20200214145736.18550-9-maz@kernel.org> <4b7f71f1-5e7f-e6af-f47d-7ed0d3a8739f@huawei.com> <75597af0d2373ac4d92d8162a1338cbb@kernel.org> <19a7c193f0e4b97343e822a35f0911ed@kernel.org> <8db95a86-0981-710b-6c82-be7f7f844151@huawei.com> Message-ID: <8c538d2e-5ec8-0fd0-8999-e43a847df4c1@huawei.com> Date: Wed, 19 Feb 2020 23:18:16 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.2.0 MIME-Version: 1.0 In-Reply-To: <8db95a86-0981-710b-6c82-be7f7f844151@huawei.com> Content-Type: text/plain; charset="utf-8"; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit X-Originating-IP: [10.173.222.27] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2020/2/19 19:50, Zenghui Yu wrote: > 3. it looks like KVM makes the assumption that the per-RD MMIO region > will only be accessed by the associated VCPU?  But I think this's not > restricted by the architecture, we can do it better.  Or I've just > missed some important points here. (After some basic tests, KVM actually does the right thing!) So I must have some mis-understanding on this point, please ignore it. I'll dig it further myself, sorry for the noisy. Thanks, Zenghui