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Date:   Thu, 16 Sep 2021 12:34:34 +1200
From:   Michael Cree <>
To:     Linus Torvalds <>
Cc:     Guenter Roeck <>,
        Richard Henderson <>,
        Ivan Kokshaysky <>,
        Matt Turner <>,
        "James E . J . Bottomley" <>,
        Helge Deller <>,
        "David S . Miller" <>,
        Jakub Kicinski <>,
        alpha <>,
        Geert Uytterhoeven <>,
        Linux Kernel Mailing List <>,, Netdev <>,
        Sparse Mailing-list <>
Subject: Re: [PATCH v2 0/4] Introduce and use absolute_pointer macro

On Wed, Sep 15, 2021 at 12:18:58PM -0700, Linus Torvalds wrote:
> On Tue, Sep 14, 2021 at 8:52 PM Guenter Roeck <> wrote:
> >
> > This patch series introduces absolute_pointer() to fix the problem.
> > absolute_pointer() disassociates a pointer from its originating symbol
> > type and context, and thus prevents gcc from making assumptions about
> > pointers passed to memory operations.
> Ok, I've applied this to my tree.
> I note that the physical BOOT_PCB addresses in the alpha setup.h file
> might be useful for things like MILO in user space, but since I
> couldn't even find MILO sources any more, I couldn't really check.
> I suspect alpha is basically on life support and presumably nobody
> would ever compile a bootloader anyway, so it's unlikely to matter.
> If somebody does find any issues, we'll know better and we can ask
> where the user space sources are that might use that alpha setup.h
> file.

I think everyone uses aboot now as the bootloader on Alpha.  So as
long as we can still compile aboot everyone should be happy.


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