Encoding page size in the ELF header

[Andreas Schwab]

Florian Weimer <fweimer@redhat.com> writes:

> On 09/27/2015 10:55 AM, Andreas Schwab wrote:
>> Rich Felker <dalias@libc.org> writes:
>> 
>>> On Sat, Sep 26, 2015 at 07:13:00PM -0400, Frank Ch. Eigler wrote:
>
>>>> Could the app more portably use
>>>>
>>>> int critical_data __attribute__((section(".data.critical")));
>>>>
>>>> and maybe a linker script widgetry to assure padding & fetch
>>>> base-addresses, and then mprotect it that way?  It would become
>>>> independent of page size.
>>>
>>> That does not eliminate the page size dependency.
>> 
>> MAXPAGESIZE is available in the linker script.
>
> But ld.so supports running binaries with a larger kernel page size than
> MAXPAGESIZE, don't we?  In most cases, it does work, after all.

Does it?

Andreas.

-- 
Andreas Schwab, schwab@linux-m68k.org
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