linux-kernel - Re: [patch 0/9] x86, xsave: xsave/xrstor support

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Message-ID: <20080731215808.GB8563@linux-os.sc.intel.com>
Date:	Thu, 31 Jul 2008 14:58:09 -0700
From:	Suresh Siddha <suresh.b.siddha@...el.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	"Siddha, Suresh B" <suresh.b.siddha@...el.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	"tglx@...utronix.de" <tglx@...utronix.de>,
	"torvalds@...ux-foundation.org" <torvalds@...ux-foundation.org>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"arjan@...ux.intel.com" <arjan@...ux.intel.com>,
	"roland@...hat.com" <roland@...hat.com>,
	"drepper@...hat.com" <drepper@...hat.com>,
	"mikpe@...uu.se" <mikpe@...uu.se>,
	"chrisw@...s-sol.org" <chrisw@...s-sol.org>,
	"andi@...stfloor.org" <andi@...stfloor.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [patch 0/9] x86, xsave: xsave/xrstor support

On Thu, Jul 31, 2008 at 02:29:15PM -0700, Ingo Molnar wrote:
> > Ingo, 2.6.25, 2.6.26 also reboots randomly with this config on my
> > dual-socket system.
> 
> hmmm ....
> 
> a few guesses: perhaps I2C related (the randconfig turned on I2C bits)?
> Do you have any way (hw test-kit) to figure out where the reboot comes
> from - is it a triple fault caused by the kernel? Or some hardware
> event?

Doh! I knew something was wrong with your randconfig :)

#
# Watchdog Device Drivers
#
....

CONFIG_PC87413_WDT=y
CONFIG_60XX_WDT=y
# CONFIG_SBC8360_WDT is not set
CONFIG_CPU5_WDT=y
CONFIG_SMSC37B787_WDT=y
CONFIG_W83627HF_WDT=y
CONFIG_W83697HF_WDT=y
CONFIG_W83877F_WDT=y
CONFIG_W83977F_WDT=y
CONFIG_MACHZ_WDT=y
CONFIG_SBC_EPX_C3_WATCHDOG=y

Kernel was enabling watchdog, with out the userspace having the
heartbeat daemon....

randconfig is really not a good way to test! I can't even ssh to the box
with this config (something else is missing in the config!)

Anyhow, with watchdog removed, it works just fine. (both xsave and non-xsave
kernels)

thanks,
suresh
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