From: Arjan van de Ven <arjan@linux.intel.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: "H. Peter Anvin" <hpa@zytor.com>,
Jacob Pan <jacob.jun.pan@linux.intel.com>,
Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@elte.hu>,
Alek Du <alek.du@intel.com>, Feng Tang <feng.tang@intel.com>,
LKML <linux-kernel@vger.kernel.org>,
Jacob Pan <jacob.jun.pan@intel.com>,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: RFD: Should we remove the HLT check? (was Re: [PATCH 1/8] x86: avoid check hlt if no timer interrupts)
Date: Fri, 07 May 2010 15:35:38 -0700 [thread overview]
Message-ID: <4BE495BA.3040905@linux.intel.com> (raw)
In-Reply-To: <20100507232448.343b5ebc@lxorguk.ukuu.org.uk>
On 5/7/2010 15:24, Alan Cox wrote:
>> I'd be cool skipping it for family 5 or newer. I'm just wondering if we
>> should kill it completely -- IIRC it was only a handful of 386/486
>> systems which had problems, usually due to marginal power supplies which
>> couldn't handle the noise of a variable load (DOS not having any power
>> management would run at a reliable 100% load) -- that's not exactly the
>> type of systems which would have survived to modern day.
>
> Also SMM and hardware bugs on some platforms - Cyrix MediaGX 5510 for
> example where a hlt at the wrong moment during ATA transfers hung the box
> until power cycle. But all old old stuff.
but a boot time "does hlt work at all" check won't catch that.
next prev parent reply other threads:[~2010-05-07 22:35 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-07 17:41 [PATCH 0/8] Moorestown changes in arch/x86 for 35 merge window Jacob Pan
2010-05-07 17:41 ` [PATCH 1/8] x86: avoid check hlt if no timer interrupts Jacob Pan
2010-05-07 20:32 ` RFD: Should we remove the HLT check? (was Re: [PATCH 1/8] x86: avoid check hlt if no timer interrupts) H. Peter Anvin
2010-05-07 20:33 ` Arjan van de Ven
2010-05-07 20:36 ` H. Peter Anvin
2010-05-07 22:24 ` Alan Cox
2010-05-07 22:27 ` H. Peter Anvin
2010-05-07 22:46 ` Alan Cox
2010-05-07 22:35 ` Arjan van de Ven [this message]
2010-05-07 20:54 ` Linus Torvalds
2010-05-07 21:04 ` H. Peter Anvin
2010-05-07 22:07 ` jacob pan
2010-05-07 17:41 ` [PATCH 2/8] x86/mrst/pci: return 0 for non-present pci bars Jacob Pan
2010-05-07 17:41 ` [PATCH 3/8] x86/apic: allow use of lapic timer early calibration result Jacob Pan
2010-05-11 13:46 ` Thomas Gleixner
2010-05-11 19:42 ` Pan, Jacob jun
2010-05-11 19:50 ` Thomas Gleixner
2010-05-11 20:46 ` Pan, Jacob jun
2010-05-11 20:51 ` H. Peter Anvin
2010-05-07 17:41 ` [PATCH 4/8] x86/mrst: change clock selection logic to support medfield Jacob Pan
2010-05-11 14:36 ` Thomas Gleixner
2010-05-11 15:30 ` Alan Cox
2010-05-11 15:50 ` Thomas Gleixner
2010-05-11 16:03 ` Alan Cox
2010-05-13 22:16 ` Pan, Jacob jun
2010-05-17 2:14 ` Du, Alek
2010-05-17 2:27 ` Du, Alek
2010-05-07 17:41 ` [PATCH 5/8] x86/apbt: support more timer configurations on mrst Jacob Pan
2010-05-07 17:41 ` [PATCH 6/8] x86/platform: add a wallclock_init func to x86_platforms ops Jacob Pan
2010-05-11 14:42 ` Thomas Gleixner
2010-05-07 17:41 ` [PATCH 7/8] x86/mrst: add vrtc driver which serves as a wall clock device Jacob Pan
2010-05-07 18:51 ` Joe Perches
2010-05-07 19:02 ` Alan Cox
2010-05-07 19:06 ` Joe Perches
2010-05-07 19:56 ` H. Peter Anvin
2010-05-10 9:17 ` Feng Tang
2010-05-10 18:22 ` H. Peter Anvin
2010-05-11 2:30 ` Feng Tang
2010-05-11 14:57 ` Thomas Gleixner
2010-05-12 2:34 ` Feng Tang
2010-05-17 9:15 ` Thomas Gleixner
2010-05-18 6:27 ` Feng Tang
2010-05-18 7:38 ` Thomas Gleixner
2010-05-18 20:43 ` john stultz
2010-05-18 21:02 ` Thomas Gleixner
2010-05-21 2:15 ` [PATCH 1/3] timekeeping: moving xtime's init to a later time Feng Tang
2010-05-21 2:16 ` [PATCH 2/3] x86: unify current 3 similar ways of saving IRQ info Feng Tang
2010-05-21 2:19 ` [PATCH 3/3] x86/mrst: add vrtc driver which serves as a wall clock device Feng Tang
2010-05-07 17:41 ` [PATCH 8/8] x86/mrst: Add nop functions to x86_init mpparse functions Jacob Pan
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