Re: [PATCH v4 22/22] x86/fpu/xstate: Introduce boot-parameters to control state component support

On Thu, Mar 25, 2021 at 9:50 PM Thomas Gleixner [off-list ref] wrote:

Please provide the architectural document which guarantees that and does
so in a way that it can be evaluated by the kernel. Have not seen that,
so it does not exist at all.

  Future CPUID attributes are as useful as the tweet of today.

I will do so the moment I am permitted.
I'm fine with dropping patch 22 until it can rely on the assurance of
that architectural feature.

thanks,
Len Brown, Intel Open Source Technology Center