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Date: Sun, 21 Dec 2014 17:32:04 -0500 From: Dave Jones <davej@...emonkey.org.uk> To: Linus Torvalds <torvalds@...ux-foundation.org> Cc: Thomas Gleixner <tglx@...utronix.de>, Chris Mason <clm@...com>, Mike Galbraith <umgwanakikbuti@...il.com>, Ingo Molnar <mingo@...nel.org>, Peter Zijlstra <peterz@...radead.org>, Dâniel Fraga <fragabr@...il.com>, Sasha Levin <sasha.levin@...cle.com>, "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Suresh Siddha <sbsiddha@...il.com>, Oleg Nesterov <oleg@...hat.com>, Peter Anvin <hpa@...ux.intel.com> Subject: Re: frequent lockups in 3.18rc4 On Sun, Dec 21, 2014 at 02:19:03PM -0800, Linus Torvalds wrote: > > So the range of 1-251 seconds is not entirely random. It's all in > > that "32-bit HPET range". > > DaveJ, I assume it's too late now, and you don't effectively have any > access to the machine any more, but "hpet=disable" or "nohpet" on the > command line might be worth trying if you ever see that piece of > hardware again. I can give it a try tomorrow. I'm probably saying goodbye to that machine on Tuesday, so we'll have 24hrs of testing at least. > And for posterity, do you have a dmidecode with motherboard/BIOS > information for the problematic machine? And your configuration? I can grab that in the morning too. > And finally, and stupidly, is there any chance that you have anything > accessing /dev/hpet? Not knowingly at least, but who the hell knows what systemd has its fingers in these days. Dave -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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