linux-kernel - Re: [PATCH v2 09/18] mips: use simpler access

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Message-ID: <CAK8P3a1nM3yPhjhMtUQyd5srgB99OkUvmapWv13KCuJXsf=euw@mail.gmail.com>
Date:   Wed, 23 Feb 2022 10:26:49 +0100
From:   Arnd Bergmann <arnd@...nel.org>
To:     Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Christoph Hellwig <hch@....de>,
        linux-arch <linux-arch@...r.kernel.org>,
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Subject: Re: [PATCH v2 09/18] mips: use simpler access_ok()

On Wed, Feb 23, 2022 at 8:41 AM Thomas Bogendoerfer
<tsbogend@...ha.franken.de> wrote:
>
> On Wed, Feb 16, 2022 at 02:13:23PM +0100, Arnd Bergmann wrote:
> > diff --git a/arch/mips/include/asm/uaccess.h b/arch/mips/include/asm/uaccess.h
> > index db9a8e002b62..d7c89dc3426c 100644
> > --- a/arch/mips/include/asm/uaccess.h
> > +++ b/arch/mips/include/asm/uaccess.h
> > @@ -19,6 +19,7 @@
> >  #ifdef CONFIG_32BIT
> >
> >  #define __UA_LIMIT 0x80000000UL
> > +#define TASK_SIZE_MAX        __UA_LIMIT
>
> using KSEG0 instead would IMHO be the better choice. This gives the
> chance to remove __UA_LIMIT completly after cleaning up ptrace.c

Ok, changed now.

      Arnd