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

From: Greg Kroah-Hartman
Date: Fri Jun 19 2020 - 12:41:07 EST


On Fri, Jun 19, 2020 at 05:33:39PM +0100, Richard Hughes wrote:
> On Fri, 19 Jun 2020 at 17:10, Borislav Petkov <bp@xxxxxxxxx> wrote:
> > - do you just want to display feature support?
>
> Yes. I want to show the user *why* TME is not available.

So even if it is "available" that's fine, even if it is not being used?

And how can you ever tell if a BIOS disables a CPU feature, yet the chip
still has it? That should be not seen from the OS as it really doesn't
care, it just knows if the feature is able to be used or not.

thanks,

greg k-h