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 F11761CBEAF; Thu, 10 Oct 2024 14:21:19 +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=1728570083; cv=none; b=mGF6idXBwGEqPyMeMWadD9aitUopTWxAawC/A82QYrlIKLlEifQbdKz2wp9dFyVgFMOnzEKFpIqvQKv6JIlMhlRO+N8a58q4ClZt2cg9GCBu6g5i5X+BxBjJrbHE+47DxEAIcMdOSSBERMNCq4/QBr38dGbtPCVgd7nuNLas6yo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728570083; c=relaxed/simple; bh=vQcroqrfXxjJH/WrgCFcllXXIoax+Vpt+UI+OK0sYyg=; h=Date:From:To:CC:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=dxBHzdlxAqILK8ocOgX8dAq3qUS19JIdLHWH5MHFaONLxm7PhG8Aj78oSlhfzZ8AqxIhiNh0xZF9jfkOxOVVj7K3PGewZ9D4eDcM/SxMozOFaYKqUaeHmFV8Z4LMA3MfUslRjwzFqDYfP6dpDts6q+V7QNe0K/8O6S6JKksLI5M= 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 [172.18.186.231]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4XPX2h4Hf6z6K6Jk; Thu, 10 Oct 2024 22:19:56 +0800 (CST) Received: from frapeml500008.china.huawei.com (unknown [7.182.85.71]) by mail.maildlp.com (Postfix) with ESMTPS id AEBD0140B3C; Thu, 10 Oct 2024 22:21:17 +0800 (CST) Received: from localhost (10.203.177.66) by frapeml500008.china.huawei.com (7.182.85.71) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Thu, 10 Oct 2024 16:21:17 +0200 Date: Thu, 10 Oct 2024 15:21:15 +0100 From: Jonathan Cameron To: Ira Weiny CC: Dave Jiang , Fan Ni , "Navneet Singh" , Jonathan Corbet , "Andrew Morton" , Dan Williams , Davidlohr Bueso , "Alison Schofield" , Vishal Verma , , , , , Subject: Re: [PATCH v4 20/28] cxl/core: Return endpoint decoder information from region search Message-ID: <20241010152115.000041b1@Huawei.com> In-Reply-To: <20241007-dcd-type2-upstream-v4-20-c261ee6eeded@intel.com> References: <20241007-dcd-type2-upstream-v4-0-c261ee6eeded@intel.com> <20241007-dcd-type2-upstream-v4-20-c261ee6eeded@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-btrfs@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: lhrpeml100004.china.huawei.com (7.191.162.219) To frapeml500008.china.huawei.com (7.182.85.71) On Mon, 07 Oct 2024 18:16:26 -0500 Ira Weiny wrote: > cxl_dpa_to_region() finds the region from a tuple. > The search involves finding the device endpoint decoder as well. > > Dynamic capacity extent processing uses the endpoint decoder HPA > information to calculate the HPA offset. In addition, well behaved > extents should be contained within an endpoint decoder. > > Return the endpoint decoder found to be used in subsequent DCD code. > > Signed-off-by: Ira Weiny Reviewed-by: Jonathan Cameron