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Date: Tue, 22 Jul 2008 18:32:20 -0700 From: Jesse Barnes <jbarnes@...tuousgeek.org> To: Jack Howarth <howarth@...mo.msbb.uc.edu> Cc: linux-kernel@...r.kernel.org, Shaohua Li <shaohua.li@...el.com> Subject: Re: [PATCH] x86,pci: dmi check for mackpro 2.2 mmconf On Tuesday, July 22, 2008 6:00 pm Jack Howarth wrote: > Jesse, > I found that patch right after I sent the email. Applying the ASPM > patch solves the boot hangs on under 2.6.26-git9 built with > CONFIG_PCIEASPM=y. I am attaching the dmesg log for such a boot > below. I am a little confused if the patch totally disables aspm on > my machine or just inhibits the hang. Is there a proc entry I can check > to monitor that aspm is in use? It should disable ASPM on pre-1.1 PCIe devices, since apparently many of them get ASPM wrong, resulting in bus hangs. There's a file in sysfs to control things: /sys/module/pcie_aspm/parameters/policy (see the description in 7d715a6c1ae5785d00fb9a876b5abdfc43abc44b for info). With the patch applied hopefully it indicates that things are disabled. Thanks for testing. Jesse -- 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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