Re: [RFC PATCH 2/8] x86: add CPU field to struct thread_info

[Borislav Petkov]

On Tue, Sep 14, 2021 at 02:10:30PM +0200, Ard Biesheuvel wrote:
> The CPU field will be moved back into thread_info even when
> THREAD_INFO_IN_TASK is enabled, so add it back to x86's definition of
> struct thread_info.
> 
> Signed-off-by: Ard Biesheuvel <ardb@xxxxxxxxxx>
> ---
>  arch/x86/include/asm/thread_info.h | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/arch/x86/include/asm/thread_info.h b/arch/x86/include/asm/thread_info.h
> index cf132663c219..ebec69c35e95 100644
> --- a/arch/x86/include/asm/thread_info.h
> +++ b/arch/x86/include/asm/thread_info.h
> @@ -57,6 +57,9 @@ struct thread_info {
>  	unsigned long		flags;		/* low level flags */
>  	unsigned long		syscall_work;	/* SYSCALL_WORK_ flags */
>  	u32			status;		/* thread synchronous flags */
> +#ifdef CONFIG_SMP
> +	u32			cpu;		/* current CPU */
> +#endif
>  };
>  
>  #define INIT_THREAD_INFO(tsk)			\
> -- 

Acked-by: Borislav Petkov <bp@xxxxxxx>

-- 
Regards/Gruss,
    Boris.

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