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=-5.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham 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 933E6C3A59E for ; Wed, 21 Aug 2019 18:43:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6FAF3214DA for ; Wed, 21 Aug 2019 18:43:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728406AbfHUSnu (ORCPT ); Wed, 21 Aug 2019 14:43:50 -0400 Received: from szxga06-in.huawei.com ([45.249.212.32]:42050 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726903AbfHUSnu (ORCPT ); Wed, 21 Aug 2019 14:43:50 -0400 Received: from DGGEMS406-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id 5CF5123C61D29CF5A623; Thu, 22 Aug 2019 02:43:47 +0800 (CST) Received: from [127.0.0.1] (10.184.12.158) by DGGEMS406-HUB.china.huawei.com (10.3.19.206) with Microsoft SMTP Server id 14.3.439.0; Thu, 22 Aug 2019 02:43:40 +0800 Subject: Re: [PATCH v2 05/12] irqchip/gic: Prepare for more than 16 PPIs To: Marc Zyngier , Thomas Gleixner , "Jason Cooper" , Julien Thierry , Rob Herring CC: Lokesh Vutla , John Garry , , Shameerali Kolothum Thodi , References: <20190806100121.240767-1-maz@kernel.org> <20190806100121.240767-6-maz@kernel.org> From: Zenghui Yu Message-ID: Date: Thu, 22 Aug 2019 02:40:18 +0800 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:64.0) Gecko/20100101 Thunderbird/64.0 MIME-Version: 1.0 In-Reply-To: <20190806100121.240767-6-maz@kernel.org> Content-Type: text/plain; charset="utf-8"; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [10.184.12.158] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2019/8/6 18:01, Marc Zyngier wrote: > GICv3.1 allows up to 80 PPIs (16 legaci PPIs and 64 Extended PPIs), ^^^^^^ legacy? Zenghui > meaning we can't just leave the old 16 hardcoded everywhere. > > We also need to add the infrastructure to discover the number of PPIs > on a per redistributor basis, although we still pretend there is only > 16 of them for now. > > No functional change. > > Signed-off-by: Marc Zyngier