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[23.128.96.32]) by mx.google.com with ESMTPS id l22-20020a656816000000b0056a290addadsi1788589pgt.787.2023.09.14.09.15.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 14 Sep 2023 09:15:56 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.32 as permitted sender) client-ip=23.128.96.32; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.32 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=arm.com Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by agentk.vger.email (Postfix) with ESMTP id D7DB782B5717; Thu, 14 Sep 2023 09:14:40 -0700 (PDT) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.10 at agentk.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238282AbjINQOl (ORCPT + 99 others); Thu, 14 Sep 2023 12:14:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36686 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233462AbjINQOj (ORCPT ); Thu, 14 Sep 2023 12:14:39 -0400 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 7B3F01BE1; Thu, 14 Sep 2023 09:14:35 -0700 (PDT) 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 4249D1FB; Thu, 14 Sep 2023 09:15:12 -0700 (PDT) Received: from bogus (unknown [10.57.93.37]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 8DD3F3F738; Thu, 14 Sep 2023 09:14:33 -0700 (PDT) Date: Thu, 14 Sep 2023 17:13:35 +0100 From: Sudeep Holla To: Huisong Li Cc: rafael@kernel.org, rafael.j.wysocki@intel.com, Sudeep Holla , linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, liuyonglong@huawei.com Subject: Re: [PATCH] mailbox: pcc: export the PCC subspace type Message-ID: <20230914161335.rz6fn4w2pqzz4wdp@bogus> References: <20230914115753.9064-1-lihuisong@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230914115753.9064-1-lihuisong@huawei.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (agentk.vger.email [0.0.0.0]); Thu, 14 Sep 2023 09:14:41 -0700 (PDT) X-Spam-Status: No, score=-0.8 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on agentk.vger.email On Thu, Sep 14, 2023 at 07:57:53PM +0800, Huisong Li wrote: > As stated in APCI spec, the size of the subspace shared memory region may > be different for different types. So it is useful for driver to fill PCC > communication space. But the driver used this PCC channel doesn't know what > is the subspace type of the channel. > > So export the PCC subspace type by requesting PCC channel. > I would prefer to avoid this, but please post it with user to get better understanding of it. -- Regards, Sudeep