Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757640Ab2K0Aud (ORCPT ); Mon, 26 Nov 2012 19:50:33 -0500 Received: from mail-ia0-f174.google.com ([209.85.210.174]:62967 "EHLO mail-ia0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757561Ab2K0Auc (ORCPT ); Mon, 26 Nov 2012 19:50:32 -0500 From: "Justin Piszcz" To: "=?iso-8859-1?Q?'Bruno_Pr=E9mont'?=" Cc: , References: <097501cdca7b$7e303890$7a90a9b0$@lucidpixels.com> <20121126224245.248f0901@neptune.home> In-Reply-To: <20121126224245.248f0901@neptune.home> Subject: RE: Supermicro X9SRL-F - channel enumeration error & ACPI/firmware bug question Date: Mon, 26 Nov 2012 19:50:30 -0500 Message-ID: <002901cdcc39$33ae8550$9b0b8ff0$@lucidpixels.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Outlook 14.0 Thread-Index: AQH421ylXKr/7aSEd56ctRShmAJ9gwGHtGctl5pegPA= Content-Language: en-us Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1465 Lines: 52 > [ 0.696357] ioatdma: Intel(R) QuickData Technology Driver 4.00 > [ 0.696487] ioatdma 0000:00:04.0: channel error register unreachable > I assume this is something Supermicro has to fix? You are probably missing some kernel config option(s) :) - I did fight similar issues on a Fujitsu SandyBridge Xeon based server. Check if enabling CONFIG_X86_X2APIC helps as well as other APIC/IOMMU options. Bruno => Enabled: CONFIG_IOMMU_SUPPORT CONFIG_INTEL_IOMMU CONFIG_INTEL_IOMMU_DEFAULT_ON CONFIG_IRQ_REMAP Also tried enabling NUMA, etc: [ 0.330998] ACPI FADT declares the system doesn't support PCIe ASPM, so disable it [ 0.331068] ACPI: bus type pci registered [ 0.615234] ACPI: Dynamic OEM Table Load: [ 0.615373] ACPI: PRAD (null) 000BE (v02 PRADID PRADTID 00000001 MSFT 04000000) [ 0.615631] \_SB_:_OSC invalid UUID [ 0.615633] _OSC request data:1 7 [ 0.663138] pci 0000:ff:13.5: [8086:3c44] type 00 class 0x110100 [ 0.663170] pci 0000:ff:13.6: [8086:3c45] type 00 class 0x088000 [ 0.663211] pci0000:ff: ACPI _OSC support notification failed, disabling PCIe ASPM [ 0.663281] pci0000:ff: Unable to request _OSC control (_OSC support mask: 0x08) :( Justin. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/