linux-kernel - Re: PCIE ASPM support hangs my laptop pretty often

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Message-ID: <47A8CE10.4010807@intel.com>
Date:	Tue, 05 Feb 2008 12:58:56 -0800
From:	"Kok, Auke" <auke-jan.h.kok@...el.com>
To:	Greg KH <greg@...ah.com>
CC:	Arjan van de Ven <arjan@...radead.org>,
	???????????? ?????????????????????? <penguinista@...l.net.mk>,
	Shaohua Li <shaohua.li@...el.com>,
	lkml <linux-kernel@...r.kernel.org>,
	linux-pci <linux-pci@...ey.karlin.mff.cuni.cz>
Subject: Re: PCIE ASPM support hangs my laptop pretty often

Greg KH wrote:
> On Tue, Feb 05, 2008 at 10:46:23AM -0800, Arjan van de Ven wrote:
>> On Tue, 5 Feb 2008 18:40:04 +0100
>> ???????????? ??????????????????????  <penguinista@...l.net.mk> wrote:
>>
>>> I've patched my kernel with the PCIe ASPM and after setting
>>> echo powersave > /sys/module/pcie_aspm/parameters/policy
>>>
>>> I started to experience random hangs of my laptop.
>>> Hardware info:
>>> Thinkpad x60s 1704-5UG
>> the x60's chipset doesn't support ASPM properly afaik... bad idea.
> 
> Well, the code shouldn't then cause a crash of the machine :)

The user enabled it specifically (where it is disabled by default)

ASPM has been crashing e1000(e), which is why I've recently merged a patch to
disable L1 ASPM for the onboard 82573 nic on those platforms.

this new infrastructure should work in the default configuration - enabling ASPM
where this system leaves it disabled is expected to give problems unless you know
what you are doing.

Auke
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