Received: by 2002:a25:8b12:0:0:0:0:0 with SMTP id i18csp33515ybl; Wed, 21 Aug 2019 14:20:29 -0700 (PDT) X-Google-Smtp-Source: APXvYqwXqtXg3eCQloSeBTjxFNaC9bhf/EVBM8a7whvpzjpuTrQc9N7LaWUismr2DUehTVKaMUfi X-Received: by 2002:a65:5786:: with SMTP id b6mr30479869pgr.236.1566422429217; Wed, 21 Aug 2019 14:20:29 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1566422429; cv=none; d=google.com; s=arc-20160816; b=SIBCFpk8yNptH5rNKUTcdG3vdRO4eiWk1YGm6HdfM6i/uNkFJoG/huMbr5xrt3jRI7 yc1xjJAq90+DBbfyMc3VHe2nR0/aexIkkr3NxxyGAx8KjXNLq7a1pKj092fcjsTbSItt em1EFuXWPHdDNpypwEaA/JSUAbVsU+t1pmPtCKmOUHl+hJpwuiXrLJ7qfPyl1YGQjx+Q JcBTeKF7ubU744xMXNdHfFBEJCnxDSuiiLxvtCe7IkXb4peBeyn8YWfyk3pncGsGHxLW LerLu/RebPR5TraNsyps1KRPI055JuGxmvX4haMomdM0G6NPKRHezXY5OW9VifTtoK77 Wnkw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding :content-language:in-reply-to:mime-version:user-agent:date :message-id:from:references:cc:to:subject; bh=NcH7ezghXXaJtng+H8k02TaovFr3qBqCaMXIJbE4NoM=; b=GYa8dzKMD8hS6+qQUjflO//MOg5nDXh+bnoxu63aGw7KWvqPHLWAUhcc7yXFkwUqH0 HSJ+nLof2BSURp4xsqYFwUyHZpFO6JQvkIraAtWR4HSv4c5it553xTQmsFLxQC9Tplq8 SrRAWrcB12tkYPYND4tn+U3lIx0hGipr6BU9Gf540Lw6FqJupLKm9nL8xIAC6k7Swc2P eJLYGj+ICMbEWxqyOBqwX5NXxDI/YW500VTOvHclL2dZSe/e1pbDjW37FMDweNresqLG h8AM/XNPx5ci6BHtVeNdxB2AaMXcNDS1GH6b8W6WxswPvuIt6nF0Bqxoo58cqAWX4PBg NBHw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id cp4si9286446plb.330.2019.08.21.14.20.14; Wed, 21 Aug 2019 14:20:29 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728371AbfHUSnu (ORCPT + 99 others); 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