From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Huang\, Ying" Subject: Re: [PATCH] ACPI, APEI: Fix BERT resources conflict with ACPI NVS area Date: Fri, 17 Feb 2017 08:31:12 +0800 Message-ID: <8737fdaca7.fsf@yhuang-dev.intel.com> References: <20170214020143.29713-1-ying.huang@intel.com> <4305135.N5b65JQej5@aspire.rjw.lan> <20170216095230.ecbb6hfqmcpk3jbw@pd.tnic> <87fujea0wo.fsf@yhuang-dev.intel.com> <20170216103215.ppo2oe7byql5r6ve@pd.tnic> Mime-Version: 1.0 Content-Type: text/plain; charset=ascii Return-path: Received: from mga03.intel.com ([134.134.136.65]:33630 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751801AbdBQAbQ (ORCPT ); Thu, 16 Feb 2017 19:31:16 -0500 In-Reply-To: <20170216103215.ppo2oe7byql5r6ve@pd.tnic> (Borislav Petkov's message of "Thu, 16 Feb 2017 11:32:15 +0100") Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Borislav Petkov Cc: "Huang, Ying" , "Rafael J. Wysocki" , Len Brown , Tomasz Nowicki , Tony Luck , Fu Wei , linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org Borislav Petkov writes: > On Thu, Feb 16, 2017 at 06:24:39PM +0800, Huang, Ying wrote: >> The NVS area is excluded when request the resources, because the NVS >> area has been marked as busy already. But the whole BERT memory area is >> mapped, so we can read from it. > > So you're saying the NVS area is part of the BERT area and we can access > the whole range? I am not sure whether the NVS area is a part of the BERT area, but apparently they are overlapped in some way. We will access the whole BERT area here via ioremap the whole range. Best Regards, Huang, Ying