linux-kernel - Re: [PATCH 2/9] x86 idle: remove NOP cpuinfo_x86.hlt_works

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Message-ID: <4D94C7B4.4070904@zytor.com>
Date:	Thu, 31 Mar 2011 11:28:04 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Len Brown <lenb@...nel.org>
CC:	Ingo Molnar <mingo@...e.hu>, x86@...nel.org,
	linux-kernel@...r.kernel.org, linux-pm@...ts.linux-foundation.org,
	Len Brown <len.brown@...el.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH 2/9] x86 idle: remove NOP cpuinfo_x86.hlt_works_ok flag

On 03/31/2011 11:07 AM, Len Brown wrote:
>>
>> Do we know whether a distro adds this to the boot line? Do we know about users 
>> relying on it.
> 
> Impossible to know.
> 

The first would be insanely unlikely, as the machines with HLT problems
were already getting old by the time Linux distributions started
appearing in significant numbers.

Users relying on it is another issue.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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