Re: [PATCH v7 07/26] x86/fpu/xstate: Warn if kernel dynamic xfeatures detected in normal fpstate

[Yang, Weijiang]

On 11/28/2023 11:25 PM, Edgecombe, Rick P wrote:
> On Fri, 2023-11-24 at 00:53 -0500, Yang Weijiang wrote:
> > Kernel dynamic xfeatures now are __ONLY__ enabled for guest fpstate,
> > i.e.,
> > none for normal kernel fpstate. The bits are added when guest FPU
>    ^never?

Sure, will change it, thank you!

> > config
> > is initialized. Guest fpstate is allocated with fpstate->is_guest set
> > to
> > %true.
> >
> > For normal fpstate, the bits should have been removed when
> > initializes
> > kernel FPU config settings, WARN_ONCE() if kernel detects normal
> > fpstate
> > xfeatures contains kernel dynamic xfeatures before executes xsaves.
> >
> > Signed-off-by: Yang Weijiang <weijiang.yang@xxxxxxxxx>
> Otherwise...
>
> Reviewed-by: Rick Edgecombe <rick.p.edgecombe@xxxxxxxxx>