From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755057AbaCKRPW (ORCPT ); Tue, 11 Mar 2014 13:15:22 -0400 Received: from mout.web.de ([212.227.17.12]:58722 "EHLO mout.web.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752744AbaCKRPU convert rfc822-to-8bit (ORCPT ); Tue, 11 Mar 2014 13:15:20 -0400 Date: Tue, 11 Mar 2014 18:15:13 +0100 From: Julian Wollrath To: Thomas Gleixner Cc: x86@kernel.org, LKML , Lee@linutronix.de, Chun-Yi , "Rafael J. Wysocki" Subject: Re: [RESEND] Fast TSC calibration fails with v3.14-rc1 and later Message-ID: <20140311181513.0f73383c@ilfaris> In-Reply-To: References: <20140310110410.5b2218f6@ilfaris> <20140311142910.27594027@ilfaris> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 8BIT X-Provags-ID: V03:K0:H57QrV7TImx6M+3mSUzwN+ndxgpj8QQ7Y1OGLBT8yl6FO7TXUDF e/ik2OanEGcfv4YMptkadTWtHGGcSKPXtX63bV1IbOW/AS9rn3unX3YgLYxUjNz/LWsaWT6 MdkG+70AyvBneD3bPYnWRuPCxehj5K6M6PwpVfis9wvEN55YV5hz2bgHimVkgmLkm5kl/5o 8/AMjWVofMPKSk7NQE/yw== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Am Tue, 11 Mar 2014 14:56:41 +0100 (CET) schrieb Thomas Gleixner : > > Ok, via bisecting I found commit > > 73f7d1ca32638028e3271f54616773727e2f9f26 (see below) to be the one > > that introduced this regression. > > Interesting. I have no idea what's going on. But maybe can the ACPI > folks shed some light on it. I have absolutely no idea, if it is the right thing to do and why it works, but the patch below fixes the problem. Thank you for your help. Cheers, Julian Wollrath >>From 7664f495039d93adfce073e58840a46549904f04 Mon Sep 17 00:00:00 2001 From: Julian Wollrath Date: Tue, 11 Mar 2014 18:05:43 +0100 Subject: [PATCH] Fix fast TSC calibration Since commit 73f7d1ca32638028e3271f54616773727e2f9f26 the fast TSC calibration failed on a Thinkpad X121e with an AMD E450 APU. Moving acpi_early_init() after late_time_init() fixes this. Signed-off-by: Julian Wollrath --- init/main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/init/main.c b/init/main.c index eb03090cdced..bf9d99148bd6 100644 --- a/init/main.c +++ b/init/main.c @@ -561,7 +561,6 @@ asmlinkage void __init start_kernel(void) init_timers(); hrtimers_init(); softirq_init(); - acpi_early_init(); timekeeping_init(); time_init(); sched_clock_postinit(); @@ -609,6 +608,7 @@ asmlinkage void __init start_kernel(void) numa_policy_init(); if (late_time_init) late_time_init(); + acpi_early_init(); sched_clock_init(); calibrate_delay(); pidmap_init(); -- 1.9.0