linux-kernel - Re: All kernels after 2.6.32-git10 show only 1 CPU ** NOT Fixed in 2.6.33-rc2 either **

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Message-ID: <4B3A6AF4.7040907@blueyonder.co.uk>
Date:	Tue, 29 Dec 2009 20:47:48 +0000
From:	Sid Boyce <sboyce@...eyonder.co.uk>
To:	Len Brown <lenb@...nel.org>
CC:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	x86@...nel.org
Subject: Re: All kernels after 2.6.32-git10  show only 1 CPU ** NOT Fixed
 in 2.6.33-rc2 either **

On 29/12/09 20:19, Len Brown wrote:
> On Mon, 28 Dec 2009, Sid Boyce wrote:
> 
>> This dmesg is from a freshly built 2.6.32. The following do not appear
>> in later 2.6.32-git or 2.6.33-rc kernels.
>> # grep LAPIC /DMESG_2.6.32_tindog
>> ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
>> ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] enabled)
>> ACPI: LAPIC (acpi_id[0x02] lapic_id[0x02] disabled)
>> ACPI: LAPIC (acpi_id[0x03] lapic_id[0x03] disabled)
>> ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
>> ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1])
>> ACPI: LAPIC_NMI (acpi_id[0x02] high edge lint[0x1])
>> ACPI: LAPIC_NMI (acpi_id[0x03] high edge lint[0x1]
> 
> Right, your local apic is not found, ie this is missing
> in the 2.6.33 dmesg:
> 
> ACPI: Local APIC address 0xfee00000
> 
> Strange, as CONFIG_X86_LOCAL_APIC=y
> 
> -Len
> Len Brown, Intel Open Source Technology Center
> 

That is the case for >2.6.32-git1. As I could get some early 2.6.32-git
kernels to boot, I didn't spot the difference until I started to compare
the dmesg outputs lately.
I checked the BIOS and it's the latest available.
Regards
Sid.
-- 
Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
Specialist, Cricket Coach
Microsoft Windows Free Zone - Linux used for all Computing Tasks

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