linux-kernel - Re: [PATCH] x86/fpu: Unify the naming of the FPU register cache validity flags

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Date:   Thu, 26 Jan 2017 16:31:27 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Ingo Molnar <mingo@...nel.org>
Cc:     Rik van Riel <riel@...hat.com>, linux-kernel@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        Andy Lutomirski <luto@...capital.net>,
        Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Fenghua Yu <fenghua.yu@...el.com>,
        "H . Peter Anvin" <hpa@...or.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Oleg Nesterov <oleg@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Yu-cheng Yu <yu-cheng.yu@...el.com>
Subject: Re: [PATCH] x86/fpu: Unify the naming of the FPU register cache
 validity flags

On Thu, Jan 26, 2017 at 04:05:25PM +0100, Ingo Molnar wrote:
> diff --git a/arch/x86/include/asm/switch_to.h b/arch/x86/include/asm/switch_to.h
> index a7146dadb31d..7a4915dd0547 100644
> --- a/arch/x86/include/asm/switch_to.h
> +++ b/arch/x86/include/asm/switch_to.h
> @@ -78,7 +78,7 @@ do {									\
>   */
>  static inline void arch_task_migrate(struct task_struct *p)
>  {
> -	p->thread.fpu.fpregs_cached = 0;
> +	p->thread.fpu.fpregs_owner = 0;
>  }
>  #define arch_task_migrate arch_task_migrate

I still really dislike having this callback..