Re: [PATCH v2 0/4] Introduce and use absolute_pointer macro

From: Michael Cree (mcree@xxxxxxxxxxxx)
Date: Wed Sep 15 2021 - 20:35:10 EST


On Wed, Sep 15, 2021 at 12:18:58PM -0700, Linus Torvalds wrote:
> On Tue, Sep 14, 2021 at 8:52 PM Guenter Roeck <linux@xxxxxxxxxxxx> 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.

Cheers
Michael.