linux-kernel - Re: [tip:x86/urgent] x86/amd: Fix L1i and L2 cache sharing information for AMD family 15h processors

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Message-ID: <20120209153533.GG30341@alberich.amd.com>
Date:	Thu, 9 Feb 2012 16:35:33 +0100
From:	Andreas Herrmann <andreas.herrmann3@....com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	<linux-tip-commits@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <hpa@...or.com>,
	<mingo@...hat.com>, <davej@...hat.com>, <Borislav.Petkov@....com>,
	<stable@...nel.org>, <tglx@...utronix.de>
Subject: Re: [tip:x86/urgent] x86/amd: Fix L1i and L2 cache sharing
 information for AMD family 15h processors

On Thu, Feb 09, 2012 at 02:37:54PM +0100, Ingo Molnar wrote:
> 
> This commit seems to cause a boot hang on an old Athlon64 CPU:

Are you sure that it's this commit, or is it possible that some other
patch in tip might trigger the trouble? (Systems boots fine with this
patch reverted?)

> CPU: Physical Processor ID: 0
> CPU: Processor Core ID: 0
> numa_add_cpu cpu 0 node 0: mask now 0
> ExtINT not setup in hardware but reported by MP table
> ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=0 pin2=0
> ..MP-BIOS bug: 8254 timer not connected to IO-APIC
> ...trying to set up timer (IRQ0) through the 8259A ...
> ..... (found apic 0 pin 0) ...
> ....... works.
> CPU0: AMD Athlon(tm) 64 X2 Dual Core Processor 3800+ stepping 02

Can't reproduce this here (tried it on a couple of further
systems). Can you please provide dmesg or at least /proc/cpuinfo
output? (Also at the moment, it's not obvious to me how this timer
interrupt trouble is related to this patch.)


Thanks,

Andreas


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