Re: [PATCH] Ability to read the MKTME status from userspace

[Richard Hughes]

On Fri, 19 Jun 2020 at 20:41, Andy Lutomirski <luto@xxxxxxxxxx> wrote:
> I don't object in principle to Linux giving userspace more visibility
> into what's going on, but I'm not convinced that adding a new
> must-support-for-a-long-time interface that only solves 5% of your
> problem is worth it.

At the moment the only visibility we have is "the CPU supports TME"
and "the kernel printed a message in the journal". The sysfs/procfs
file read allows us to notify the admin if the firmware is
deliberately disabling TME for some reason, without resorting to
`grep` on dmesg. I don't think perfect should be the enemy of the
good.

Richard.