[PATCH v3 05/29] arc: Add <bits/pagesize.h>

[Adhemerval Zanella Netto]

On 12/05/25 16:53, Florian Weimer wrote:
> * Florian Weimer:
> 
>> * Vineet Gupta:
>>
>>> On 9/29/24 08:59, Florian Weimer wrote:
>>>> According to arch/arc/Kconfig in the Linux kernel sources, arc
>>>> supports pagge sizes 4 KiB, 8 KiB, 16 KiB.  However,
>>>> the toolchain defaults are not compatible with 16 KiB pages, so
>>>> xfail the future elf/tst-load-alignment test.
>>>>
>>>> (Note: Alternatively, we could fix the maximum page size at 8 KiB,
>>>> if that's closer to reality.)
>>>
>>> Indeed 16K size was more esoteric and dates back to older ARC700 cpus
>>> (not supported in glibc anyways) And 8K is indeed the default for
>>> ARCompact and ARCv2 ISA cores.
>>
>>>> +#define __GLIBC_PAGE_SHIFT_MIN 12
>>>> +#define __GLIBC_PAGE_SHIFT_MAX 14
>>
>> Do you suggest to change the maximum shift to 13?  Sorry, it's not clear
>> based on your comment.
> 
> I'm going to keep it at 12 because as Richard Henderson pointed out (for
> the similar alpha situation), only the minimum == maxmimum case can be
> optimized.  And sticking with a 4K minimum helps qemu-user, apparently.
Sounds reasonable.