From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 414261885A2; Fri, 23 Aug 2024 15:47:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.176.79.56 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724428048; cv=none; b=WHn34QbeKNrfPrKigPA9lq+k7DIyRXsktB6GTjgxWPeBxVRICTaI4qsxOTZ3QuD81AADJu82KT+okYcZDMEoF5SSeWx9pVRi+dR7gJiW2J6OkMBhrAtpRtWNYXz1CHll5bpFW/bxJPbuZTtwM5+IRKounxEpUSJYPbze7QPb/2E= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724428048; c=relaxed/simple; bh=V/owDL8egmTxcLHGKdF3ja2ZvI9vqOqZUvFPUVgYIPo=; h=Date:From:To:CC:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=oSY8Ihc/k7dOvwOz1idWu+eOp8CtqE60mQZgMVqc2vmEFAxz3ViqpLfxmfGmMvN6VI4R9QKOdUXcClTFJkTOBDeuym/JXMQNBZTZ80OoOSVZQMgMI9/J5zH2qrEYk02zel1rIPr80FKUaP0bUnsoLngko6Hd9UI/FCcXpdR5NnQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=Huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=185.176.79.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=Huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.18.186.31]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4Wr49R4P30z6J673; Fri, 23 Aug 2024 23:43:39 +0800 (CST) Received: from lhrpeml500005.china.huawei.com (unknown [7.191.163.240]) by mail.maildlp.com (Postfix) with ESMTPS id 19E7014065B; Fri, 23 Aug 2024 23:47:25 +0800 (CST) Received: from localhost (10.203.177.66) by lhrpeml500005.china.huawei.com (7.191.163.240) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Fri, 23 Aug 2024 16:47:24 +0100 Date: Fri, 23 Aug 2024 16:47:23 +0100 From: Jonathan Cameron To: CC: Dave Jiang , Fan Ni , "Navneet Singh" , Chris Mason , Josef Bacik , David Sterba , Petr Mladek , Steven Rostedt , Andy Shevchenko , Rasmus Villemoes , Sergey Senozhatsky , Jonathan Corbet , Andrew Morton , Dan Williams , Davidlohr Bueso , Alison Schofield , Vishal Verma , , , , , Subject: Re: [PATCH v3 07/25] cxl/core: Separate region mode from decoder mode Message-ID: <20240823164723.00003560@Huawei.com> In-Reply-To: <20240816-dcd-type2-upstream-v3-7-7c9b96cba6d7@intel.com> References: <20240816-dcd-type2-upstream-v3-0-7c9b96cba6d7@intel.com> <20240816-dcd-type2-upstream-v3-7-7c9b96cba6d7@intel.com> Organization: Huawei Technologies Research and Development (UK) Ltd. X-Mailer: Claws Mail 4.1.0 (GTK 3.24.33; x86_64-w64-mingw32) Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-ClientProxiedBy: lhrpeml500002.china.huawei.com (7.191.160.78) To lhrpeml500005.china.huawei.com (7.191.163.240) On Fri, 16 Aug 2024 09:44:15 -0500 ira.weiny@intel.com wrote: > From: Navneet Singh > > Until now region modes and decoder modes were equivalent in that both > modes were either PMEM or RAM. The addition of Dynamic > Capacity partitions defines up to 8 DC partitions per device. > > The region mode is thus no longer equivalent to the endpoint decoder > mode. IOW the endpoint decoders may have modes of DC0-DC7 while the > region mode is simply DC. > > Define a new region mode enumeration which applies to regions separate > from the decoder mode. Adjust the code to process these modes > independently. > > There is no equal to decoder mode dead in region modes. Avoid > constructing regions with decoders which have been flagged as dead. > > Suggested-by: Jonathan Cameron > Signed-off-by: Navneet Singh > Co-developed-by: Ira Weiny > Signed-off-by: Ira Weiny Reviewed-by: Jonathan Cameron