From: "H. Peter Anvin" <hpa@zytor.com>
To: Len Brown <lenb@kernel.org>
Cc: Ingo Molnar <mingo@elte.hu>,
x86@kernel.org, linux-kernel@vger.kernel.org,
linux-pm@lists.linux-foundation.org,
Len Brown <len.brown@intel.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH 2/9] x86 idle: remove NOP cpuinfo_x86.hlt_works_ok flag
Date: Thu, 31 Mar 2011 11:28:04 -0700 [thread overview]
Message-ID: <4D94C7B4.4070904@zytor.com> (raw)
In-Reply-To: <alpine.LFD.2.02.1103311336320.9662@x980>
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.
next prev parent reply other threads:[~2011-03-31 18:29 UTC|newest]
Thread overview: 75+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-24 7:08 [PATCH 0/5] x86 idle cruft removal Len Brown
2011-03-24 7:08 ` [PATCH 1/5] x86 idle: remove "no-hlt" cmdline param Len Brown
2011-03-24 7:08 ` [PATCH 2/5] x86 idle: remove NOP cpuinfo_x86.hlt_works_ok flag Len Brown
2011-03-24 7:08 ` [PATCH 3/5] x86 idle: remove NOP halt_works() Len Brown
2011-03-24 7:08 ` [PATCH 4/5] x86 idle floppy: delete disable_hlt()/enable_hlt() Len Brown
2011-03-24 15:58 ` Andi Kleen
2011-03-24 7:08 ` [PATCH 5/5] x86 idle: remove NOP hlt_use_halt() Len Brown
2011-03-25 19:02 ` [linux-pm] " Vaidyanathan Srinivasan
2011-03-31 6:03 ` [PATCH 0/9] x86 idle cruft removal - v2 Len Brown
2011-03-31 6:03 ` [PATCH 1/9] x86 idle: remove "no-hlt" cmdline param Len Brown
2011-03-31 6:03 ` [PATCH 2/9] x86 idle: remove NOP cpuinfo_x86.hlt_works_ok flag Len Brown
2011-03-31 6:12 ` Ingo Molnar
2011-03-31 7:02 ` Len Brown
2011-03-31 8:18 ` Ingo Molnar
2011-03-31 9:23 ` Alan Cox
2011-03-31 9:27 ` Ingo Molnar
2011-03-31 9:33 ` Alan Cox
2011-03-31 9:35 ` Ingo Molnar
2011-03-31 14:19 ` H. Peter Anvin
2011-03-31 14:41 ` Alan Cox
2011-03-31 15:09 ` H. Peter Anvin
2011-03-31 18:07 ` Len Brown
2011-03-31 18:28 ` H. Peter Anvin [this message]
2011-03-31 6:03 ` [PATCH 3/9] x86 idle: remove NOP halt_works() Len Brown
2011-03-31 6:03 ` [PATCH 4/9] x86 idle floppy: delete disable_hlt()/enable_hlt() Len Brown
2011-03-31 6:03 ` [PATCH 5/9] x86 idle: remove NOP hlt_use_halt() Len Brown
2011-03-31 6:03 ` [PATCH 6/9] x86 idle APM: delete apm_cpu_idle(), and its use of (pm_idle)() Len Brown
2011-03-31 6:03 ` [PATCH 7/9] x86 idle: do not EXPORT_SYMBOL pm_idle and default_idle Len Brown
2011-03-31 6:03 ` [PATCH 8/9] x86 idle: move mwait_idle_with_hints() to where it is used Len Brown
2011-03-31 6:03 ` [PATCH 9/9] x86 idle: delete mwait_idle() Len Brown
2011-04-01 11:02 ` Andreas Herrmann
2011-03-31 6:39 ` [linux-pm] [PATCH 0/9] x86 idle cruft removal - v2 Trinabh Gupta
2011-03-31 7:21 ` Len Brown
2011-03-31 9:45 ` Alan Cox
2011-03-31 10:28 ` Ingo Molnar
2011-04-01 4:24 ` Len Brown
2011-04-01 9:38 ` [linux-pm] " Trinabh Gupta
2011-04-01 18:33 ` Len Brown
2011-04-02 6:22 ` idle cleanup - v3 Len Brown
2011-04-02 6:22 ` [PATCH 01/18] cpuidle: menu: fixed wrapping timers at 4.294 seconds Len Brown
2011-04-02 6:22 ` [PATCH 02/18] x86 idle floppy: deprecate disable_hlt() Len Brown
2011-04-02 6:22 ` [PATCH 03/18] x86 idle APM: deprecate CONFIG_APM_CPU_IDLE Len Brown
2011-04-02 11:28 ` Alan Cox
2011-04-02 18:28 ` Len Brown
2011-04-02 19:44 ` Alan Cox
2011-04-08 6:22 ` Pavel Machek
2011-04-02 6:22 ` [PATCH 04/18] x86 idle: EXPORT_SYMBOL(default_idle, pm_idle) only when APM demands it Len Brown
2011-04-02 11:28 ` Alan Cox
2011-04-02 12:21 ` [linux-pm] " Trinabh Gupta
2011-04-02 6:22 ` [PATCH 05/18] x86 idle: deprecate "no-hlt" cmdline param Len Brown
2011-04-02 6:22 ` [PATCH 06/18] x86 idle: deprecate mwait_idle() and "idle=mwait" " Len Brown
2011-04-02 6:22 ` [PATCH 07/18] x86 idle: clarify AMD erratum 400 workaround Len Brown
2011-04-02 8:23 ` Borislav Petkov
2011-04-02 19:19 ` Len Brown
2011-04-02 19:22 ` [PATCH 07/18] x86 idle: clarify AMD erratum 400 workaround -v2 Len Brown
2011-04-03 9:00 ` Borislav Petkov
2011-04-02 6:22 ` [PATCH 08/18] cpuidle: create bootparam "cpuidle.off=1" Len Brown
2011-07-15 11:27 ` [linux-pm] " Deepthi Dharwar
2011-04-02 6:22 ` [PATCH 09/18] cpuidle: replace xen access to x86 pm_idle and default_idle Len Brown
2011-04-04 15:33 ` [Xen-devel] " Konrad Rzeszutek Wilk
2011-04-02 6:22 ` [PATCH 10/18] x86 idle: move mwait_idle_with_hints() to where it is used Len Brown
2011-04-02 6:22 ` [PATCH 11/18] cpuidle: stop using pm_idle Len Brown
2011-04-25 10:41 ` [linux-pm] " Trinabh Gupta
2011-04-02 6:22 ` [PATCH 12/18] 2.6.40: x86 idle: remove deprecated "no-hlt" cmdline param Len Brown
2011-04-02 6:22 ` [PATCH 13/18] 2.6.40: x86 idle: remove deprecated "hlt_bug: no" in 32-bit /proc/cpuinfo Len Brown
2011-04-02 6:22 ` [PATCH 14/18] 2.6.40: x86 idle floppy: remove deprecated disable_hlt()/enable_hlt() Len Brown
2011-04-02 6:22 ` [PATCH 15/18] 2.6.40: x86 idle: remove deprecated hlt_use_halt() Len Brown
2011-04-02 6:22 ` [PATCH 16/18] 2.6.40: x86 idle APM: remove deprecated apm_cpu_idle() Len Brown
2011-04-02 11:40 ` Alan Cox
2011-04-02 19:44 ` Len Brown
2011-04-02 21:00 ` Alan Cox
2011-04-03 2:48 ` [linux-pm] " Trinabh Gupta
2011-04-04 10:05 ` Alan Cox
2011-04-02 6:22 ` [PATCH 17/18] 2.6.40: x86 idle: do not export default_idle() and (pm_idle)() Len Brown
2011-04-02 6:23 ` [PATCH 18/18] 2.6.40: x86 idle: remove deprecated mwait_idle() Len Brown
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