From mboxrd@z Thu Jan 1 00:00:00 1970 From: Julian Wollrath Subject: Re: A question about acpi_early_init(), and want to invoke acpi_early_init() earlier Date: Fri, 14 Jul 2017 17:01:01 +0200 Message-ID: <20170714170101.3edfaf46@saldaea> References: <66904bb8-36ca-beb3-f19c-4796aae743df@cn.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: Received: from mout.web.de ([217.72.192.78]:61102 "EHLO mout.web.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753968AbdGNPBP (ORCPT ); Fri, 14 Jul 2017 11:01:15 -0400 In-Reply-To: <66904bb8-36ca-beb3-f19c-4796aae743df@cn.fujitsu.com> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Dou Liyang Cc: "Rafael J. Wysocki" , "Rafael J. Wysocki" , ACPI Devel Maling List , LKML Hi, > > I reproduced it by the following command line: > > ...noapic acpi_sci=level... > > > > the original dmesg is: > > > > [ 0.000000] tsc: Fast TSC calibration using PIT > > > > the broken dmesg is: > > > > [ 0.001000] tsc: PIT calibration matches HPET. 1 loops > > > > Is it right? If it is wrong, please give the right process for > > reproducing. yes, this is right, see [1] for the original thread. The earliest I could move the call of acpi_early_init() without triggering the bug back than is shown in the patch at [2] but unforunately I do not have access to the Thinkpad X121e I had back than anymore, so I cannot help with regression testing. Cheers, Julian [1] https://lkml.org/lkml/2014/3/10/123 [2] https://lkml.org/lkml/2014/3/11/424 -- () ascii ribbon campaign - against html e-mail /\ - against proprietary attachments