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SubjectRe: [PATCH v2 0/4] Introduce and use absolute_pointer macro
Date
On 9/15/21 12:18 PM, Linus Torvalds wrote:
> On Tue, Sep 14, 2021 at 8:52 PM Guenter Roeck <linux@roeck-us.net> 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.
>

FWIW, I did find a set of MILO sources. Search for milo-2.2-18.tar.bz2;
it points to a variety of gentoo mirrors.
That version does not reference BOOT_PCB. I thought about removing this
define as well as a couple of other unused defines, but wanted to keep
the changes minimal.

On a side note, we may revive the parisc patch. Helge isn't entirely
happy with the other solution for parisc; it is quite invasive and
touches a total of 19 files if I counted correctly.

Thanks,
Guenter

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