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Date: Sat, 17 Jul 2010 02:27:42 +0100
From: Matthew Garrett <mjg59@srcf.ucam.org>
To: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: Pedro Ribeiro <pedrib@gmail.com>, eusou15@yahoo.com,
        linux-kernel@vger.kernel.org, toralf.foerster@gmx.de,
        ibm-acpi-devel@lists.sourceforge.net
Subject: Re: [ibm-acpi-devel] [PATCH] Remove 9 second reboot delay on
	Lenovo T400/T500
Message-ID: <20100717012742.GA11262@srcf.ucam.org>
References: <4C3DCAA4.9050602@gmail.com> <20100714143625.GA30721@srcf.ucam.org> <20100715223149.GC27512@khazad-dum.debian.net> <20100715225022.GA31377@srcf.ucam.org> <20100715230023.GE27512@khazad-dum.debian.net> <20100715230825.GA31651@srcf.ucam.org> <20100716030107.GH27512@khazad-dum.debian.net> <20100716200824.GA7142@srcf.ucam.org> <20100717012304.GA27741@khazad-dum.debian.net>
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On Fri, Jul 16, 2010 at 10:23:04PM -0300, Henrique de Moraes Holschuh wrote:

> I'm confused.  Is it the PCI reboot vector, or the ACPI reboot vector
> that acts instantly?  The bug reporters say that they use reboot=pci to
> have instant reboot, in this thread...

The PCI one, since it's a function of the chipset. The ACPI one would 
act instantly (it's the PCI one, in this case) but it's marked as 
unsupported. However, the PCI one is poorly standardised - Windows never 
uses it, different chips have subtly different requirements and so on.

-- 
Matthew Garrett | mjg59@srcf.ucam.org
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