From mboxrd@z Thu Jan 1 00:00:00 1970 From: Max Asbock Subject: APEI: ERST table in ACPI NVS not supported Date: Tue, 29 Jan 2013 10:08:11 -0800 Message-ID: <5108100B.9040907@linux.vnet.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from e37.co.us.ibm.com ([32.97.110.158]:47179 "EHLO e37.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753480Ab3A2SI2 (ORCPT ); Tue, 29 Jan 2013 13:08:28 -0500 Received: from /spool/local by e37.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 29 Jan 2013 11:08:23 -0700 Received: from d03relay04.boulder.ibm.com (d03relay04.boulder.ibm.com [9.17.195.106]) by d03dlp01.boulder.ibm.com (Postfix) with ESMTP id 43C85C40013 for ; Tue, 29 Jan 2013 11:08:19 -0700 (MST) Received: from d03av03.boulder.ibm.com (d03av03.boulder.ibm.com [9.17.195.169]) by d03relay04.boulder.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id r0TI8JGe356088 for ; Tue, 29 Jan 2013 11:08:19 -0700 Received: from d03av03.boulder.ibm.com (loopback [127.0.0.1]) by d03av03.boulder.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id r0TI8HPp029286 for ; Tue, 29 Jan 2013 11:08:17 -0700 Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: gong.chen@linux.intel.com, ying.huang@intel.com Cc: linux-acpi@vger.kernel.org, masbock@linux.vnet.ibm.com Hi, we have systems that declare the memory range for ERST in ACPI NVS. Because ACPI NVS is marked 'busy' by e820_reserve_resources() the call to request_mem_region(erst_erange.base, erst_erange.size, "APEI ERST") made from erst_init() fails and we get: ERST: Can not request iomem region <0x 7e91f000-0x 7e920c00> for ERST. I did notice that quite some effort was made to add code to avoid resource conflicts between APEI and ACPI NVS. But ERST still goes straight to request_mem_region() which is bound to fail. I am assuming this should go through apei_resources_request() instead or I am missing something? thanks, Max