linux-kernel - Re: [PATCH] sparse: use identifiers to define address spaces

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Message-ID: <CANiq72nNQ+11ch7sRjLLc33s_OkftuOqgGkCDggq88tbJtdPNQ@mail.gmail.com>
Date:   Thu, 18 Jun 2020 03:22:15 +0200
From:   Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To:     Luc Van Oostenryck <luc.vanoostenryck@...il.com>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] sparse: use identifiers to define address spaces

Hi Luc,

On Thu, Jun 18, 2020 at 12:02 AM Luc Van Oostenryck
<luc.vanoostenryck@...il.com> wrote:
>
> diff --git a/include/linux/compiler_types.h b/include/linux/compiler_types.h
> index 21aed0981edf..e368384445b6 100644
> --- a/include/linux/compiler_types.h
> +++ b/include/linux/compiler_types.h
> @@ -5,20 +5,20 @@
>  #ifndef __ASSEMBLY__
>
>  #ifdef __CHECKER__
> -# define __user                __attribute__((noderef, address_space(1)))
>  # define __kernel      __attribute__((address_space(0)))
> +# define __user                __attribute__((noderef, address_space(__user)))

I guess `__kernel` moves to the first place since it uses the first
address space?

Acked-by: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>

Cheers,
Miguel