linux-kernel - Re: [PATCH v2 2/3] driver: provide sysfs interfaces to access TXT config space

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Date:	Fri, 17 May 2013 20:07:35 +0200
From:	Pavel Machek <pavel@....cz>
To:	"Ren, Qiaowei" <qiaowei.ren@...el.com>
Cc:	Matthew Garrett <matthew.garrett@...ula.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"platform-driver-x86@...r.kernel.org" 
	<platform-driver-x86@...r.kernel.org>,
	"Wei, Gang" <gang.wei@...el.com>, Greg KH <greg@...ah.com>
Subject: Re: [PATCH v2 2/3] driver: provide sysfs interfaces to access TXT
 config space

On Fri 2013-05-17 08:50:11, Ren, Qiaowei wrote:
> On 2013-05-17, Pavel Machek wrote:
> > On Tue 2013-05-14 01:24:43, Qiaowei Ren wrote:
> >> +What:		/sys/devices/platform/intel_txt/config/STS_raw +Date:		May 2013
> >> +KernelVersion:	3.9 +Contact:	"Qiaowei Ren" <qiaowei.ren@...el.com>
> >> +Description:	TXT.STS is the general status register. This read-only
> >> register +		is used by AC modules and the MLE to get the status of
> >> various +		Intel TXT features.
> > 
> > This is not enough to allow people to understand what this does/should
> > do, nor does it allow (for example) ARM people to implement something compatible.
> 
> Currently TXT is only a technology for safer computing provided by Intel. I am absolutely not sure whether similar technology will be provided on ARM or other platform in future. But I guess I don't have to consider those future possible implementation on ARM or other platform. :)
> 

You still have to properly design the interface and properly document
it, so people can understand and test it, and develop compatible
implementations.
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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