linux-kernel - Re: [PATCH] powerpc: Fix signature of pfn_to

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Message-ID: <CACRpkdbL1mfcAz9sPn89UGSQ6tb=jF6nRYAwp9Qz8zLXLLU_UA@mail.gmail.com>
Date:   Tue, 7 Nov 2023 09:06:41 +0100
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Michael Ellerman <mpe@...erman.id.au>
Cc:     Nicholas Piggin <npiggin@...il.com>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        kernel test robot <lkp@...el.com>
Subject: Re: [PATCH] powerpc: Fix signature of pfn_to_kaddr()

On Tue, Nov 7, 2023 at 6:57 AM Michael Ellerman <mpe@...erman.id.au> wrote:

> I'm struggling to connect the removal of const with those bug reports.
> It looks like all those warnings are about 0xc000000000000000 being
> outside the range of unsigned long when building 32-bit.

Aha right. I wonder what actually causes that.

> Is it the right bug report link?

Yeah I'm just bad at understanding these reports.

> The current signature of:
>
>   static inline const void *pfn_to_kaddr(unsigned long pfn) ...
>
> seems OK to me.

OK then, drop this patch.

Yours,
Linus Walleij