linux-kernel - Re: [PATCH v2 0/8] Thunderbolt workarounds

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Message-ID: <20130703184434.GA29587@srcf.ucam.org>
Date:	Wed, 3 Jul 2013 19:44:34 +0100
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Yinghai Lu <yinghai@...nel.org>, john.ronciak@...el.com,
	miles.j.penner@...el.com, bruce.w.allan@...el.com,
	Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org,
	linux-pci@...r.kernel.org, x86@...nel.org
Subject: Re: [PATCH v2 0/8] Thunderbolt workarounds

On Wed, Jul 03, 2013 at 11:33:11AM -0700, Greg Kroah-Hartman wrote:
> On Wed, Jul 03, 2013 at 07:29:00PM +0100, Matthew Garrett wrote:
> > Are there any plans to provide native support for the Thunderbolt 
> > controller, rather than relying on system management mode?
> 
> For what specific hardware platform?  For the ones that this patchset
> controls, the OS doesn't have access to the Thunderbolt controller as
> far as I can tell, it all happens through the ACPI and PCI hotplug
> interface.

Given that there exist platforms without the SMM implementation, there's 
presumably either a controller or chipset register that controls whether 
SMIs are generated in response to Thunderbolt events.

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