linux-kernel - Re: [regression] 3.7 ends in APIC panic

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Message-ID: <50CF4EBB.6060602@zytor.com>
Date:	Mon, 17 Dec 2012 08:56:27 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Yinghai Lu <yinghai@...nel.org>
CC:	Ingo Molnar <mingo@...nel.org>,
	Bernd Schubert <bernd.schubert@...m.fraunhofer.de>,
	linux-kernel@...r.kernel.org, Borislav Petkov <bp@...en8.de>,
	Suresh Siddha <suresh.b.siddha@...el.com>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [regression] 3.7 ends in APIC panic

On 12/17/2012 08:53 AM, Yinghai Lu wrote:
> On Mon, Dec 17, 2012 at 6:02 AM, Ingo Molnar <mingo@...nel.org> wrote:
>>
>> I suspect this needs to be fixed/improved: currently it's way
>> too easy to disable x2apic support accidentally.
>>
> 
> We can just enable x2apic by default when CONFIG_EMBEDDED is not set.
> 

Yes, although we should expect to have to blacklist hosts more aggressively.

Unfortunately we still don't have a good distinction between the
ThinkPads that have broken BIOSes when x2apic is on and those that don't.

	-hpa

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