From mboxrd@z Thu Jan 1 00:00:00 1970 From: jason hu Subject: Re: acpi_osi Linux report and questions Date: Sun, 16 Dec 2007 00:35:30 +0530 Message-ID: <4764257A.6000806@gmail.com> References: <4760BDDC.60602@gmail.com> <200712131606.58331.lenb@kernel.org> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from py-out-1112.google.com ([64.233.166.182]:32831 "EHLO py-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753037AbXLOTQd (ORCPT ); Sat, 15 Dec 2007 14:16:33 -0500 Received: by py-out-1112.google.com with SMTP id u77so2182517pyb.16 for ; Sat, 15 Dec 2007 11:16:31 -0800 (PST) In-Reply-To: <200712131606.58331.lenb@kernel.org> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Len Brown Cc: linux-acpi@vger.kernel.org The bug number is 9574, reported to kernel bug tracker ACPI (acpi bios) Thank you! Len Brown wrote: > On Thursday 13 December 2007 00:06, jason hu wrote: >> Hi All, >> >> With acpi_osi=Linux, which dmesg suggested, I got something changed in >> the dmesg output(I just listed out the most important things): >> >> >> diff !Linux Linux >> 79c80 >> < Detected 1733.505 MHz processor. >> --- >> > Detected 1733.456 MHz processor. >> 95c96 >> < Calibrating delay using timer specific routine.. 3470.37 BogoMIPS >> (lpj=1735185) >> --- >> > Calibrating delay using timer specific routine.. 3470.36 BogoMIPS >> (lpj=1735181) >> 121c122 >> < Calibrating delay using timer specific routine.. 3466.35 BogoMIPS >> (lpj=1733178) >> --- >> > Calibrating delay using timer specific routine.. 3466.36 BogoMIPS >> (lpj=1733183) > > These are not important. > >> < PCI: Cannot allocate resource region 7 of bridge 0000:00:06.0 >> < PCI: Cannot allocate resource region 8 of bridge 0000:00:06.0 >> 207c206 >> < MEM window: disabled. >> --- >> > MEM window: c0100000-c01fffff > > These may be important. > >> It seems with acpi_osi=Linux, it mainly made the two processors equals >> in BogoMIPS and made a PCI device window available. >> >> I am not so familiar with ACPI, so can you tell me what is >> acpi_osi=Linux used for, and why it made such changes above? Thank you! > > The BIOS uses it to figure out if the OS is compatible with the > capabilities of Linux. Unfortunately, the capabilities of Linux > are changing over time, and mose BIOS detection of Linux leads > to worse behaviour rather than better... > > Please file a bug report. > attach the output from acpidump, both dmesg, and the dmidecode output. > > thanks, > -Len >