Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752009AbbFNDNL (ORCPT ); Sat, 13 Jun 2015 23:13:11 -0400 Received: from mail-oi0-f54.google.com ([209.85.218.54]:34900 "EHLO mail-oi0-f54.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751276AbbFNDNF (ORCPT ); Sat, 13 Jun 2015 23:13:05 -0400 MIME-Version: 1.0 X-Originating-IP: [175.156.4.29] Date: Sun, 14 Jun 2015 11:13:04 +0800 Message-ID: Subject: Re: lockup when C1E and high-resolution timers enabled From: Daniel J Blueman To: Christoph Fritz Cc: Linux Kernel Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1467 Lines: 39 On Sunday, June 14, 2015 at 4:00:06 AM UTC+8, Christoph Fritz wrote: > Hi, > > on following computer configuration, I do get hard lockup under heavy > IO-Load (using rsync): > > - CONFIG_HIGH_RES_TIMERS=y > - CPU: AMD FX(tm)-8350 Eight-Core Processor (family 0x15 model 0x2) > - Motherboard: 'GA-970A-UD3P (rev. 1.0)' AMD 970/SB950 > - BIOS: C1E enabled (on 'GA-970A-UD3P' there is no disable option) > - Kernels: 4.1.0-rc6, 4.0.x, 3.16.x > > Tests: > - add kernel parameter "idle=halt" -> system runs fine > - disable CONFIG_HIGH_RES_TIMERS -> system runs fine > - change motherboard and disable C1E -> system runs fine > - change CPU to AMD Phenom II X6 Processor -> system runs fine [..] C1E disconnects HyperTransport links when all cores enter C1 (halt) for a period of time; this is all at the platform level, so isn't due to the kernel. The AMD AGESA code which controls the setup of this mechanism is updated in the F2g BIOS: http://www.gigabyte.com/products/product-page.aspx?pid=4717#bios Did you try both BIOS releases with defaults? If still issues, also try with the current family 10h microcode from http://www.amd64.org/microcode/amd-ucode-latest.tar.bz2 Thanks, Daniel -- Daniel J Blueman -- 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/