Re: [PATCH v2 2/3] driver: provide sysfs interfaces to access TXTconfig space

From: Pavel Machek
Date: Thu May 16 2013 - 12:03:22 EST


On Tue 2013-05-14 01:24:43, Qiaowei Ren wrote:
> These interfaces are located in /sys/devices/platform/intel_txt/config,
> and including totally 37 files, providing access to Intel TXT
> configuration registers.

This looks like very wrong interface... equivalent of /dev/mem.

> +What: /sys/devices/platform/intel_txt/config/STS_raw
> +Date: May 2013
> +KernelVersion: 3.9
> +Contact: "Qiaowei Ren" <qiaowei.ren@xxxxxxxxx>
> +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.

Is there specific reason why "better" interface is impossible?
Pavel
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