linux-kernel - Re: hwclock --systohc locks machine up, RTC conflict problems

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Message-ID: <20071219003131.GA16927@elte.hu>
Date:	Wed, 19 Dec 2007 01:31:31 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	kinesis <jriley1337@...oo.com>
Cc:	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: hwclock --systohc locks machine up, RTC conflict problems


* kinesis <jriley1337@...oo.com> wrote:

> my machine is 64bit running SLAMD64 v12 (slackware) Linux excalibur 
> 2.6.24-rc4-kinesis-g94545bad #8 SMP Sun Dec 9 10:47:29 PST 2007 x86_64 
> x86_64 x86_64 GNU/Linux
> 
> Issuing the command hwclock --systohc and sometimes at boot --hctosys 
> causes my machine to freeze.

could you try the "x86: IO delay quirk" patch attached to this bugzilla:

  http://bugzilla.kernel.org/show_bug.cgi?id=6307

please boot with io_delay=0xed [or io_delay=udelay or io_delay=none].

does that fix the lockups?

	Ingo
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