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SubjectRe: [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 <> 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.

Len Brown, Intel Open Source Technology Center

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