Re: [PATCH v9 12/26] x86/fpu/xstate: Use feature disable (XFD) to protect dynamic user state

Len Brown
2021-08-24T22:51:55Z

On Wed, Aug 18, 2021 at 2:09 PM Borislav Petkov <bp@alien8.de> wrote:

> What relevance does the fact have for userspace whether the kernel
> supports XFD or not?

Right.
If user space needs to know that XFD exists, then we have done
something very wrong.

--
Len Brown, Intel Open Source Technology Center