Re: C200, 712/80: strange sysfs issues with Linux 4.18.0-1-parisc

[John David Anglin <dave.anglin@bell.net>]

On 2018-11-28 4:07 p.m., Helge Deller wrote:
> This is what I see now. Why aren't the last .text sections (#2-6 a
> least) merged? Are there any linker options I can try?
>
> Sections:
> Idx Name          Size      VMA       LMA       File off  Algn
> ...
>    2 .text         000004a4  00001000  00001000  00001000  2**12
>                    CONTENTS, ALLOC, LOAD, RELOC, READONLY, CODE
>    3 .text         0000984c  00000000  00000000  000014a4  2**2
>                    CONTENTS, ALLOC, LOAD, RELOC, READONLY, CODE
>    4 .text         00005cdc  00000000  00000000  0000acf0  2**2
>                    CONTENTS, ALLOC, LOAD, RELOC, READONLY, CODE
>    5 .text         00003e20  00000000  00000000  000109cc  2**2
>                    CONTENTS, ALLOC, LOAD, RELOC, READONLY, CODE
>    6 .text         00000b88  00000000  00000000  000147ec  2**2
>                    CONTENTS, ALLOC, LOAD, RELOC, READONLY, CODE
>    7 .text         00000000  00000000  00000000  00015374  2**0
>                    CONTENTS, ALLOC, LOAD, READONLY, CODE
>
> But maybe we should revert to -ffunction-sections for modules anyway.
> If all .text sections get merged it may happen that we get too big
> modules again which fail to load because the distance for jumps are too
> far. Currently the module loader will insert jump tables between
> sections if necessary...
If I remember correctly, section merging is controlled by linker script.

It does seem unique section names are required for modules, so I think 
reverting to
-ffunction-sections for modules is a good idea for the moment.

In looking at some arm64 modules, I only see one .text section.

Dave

--
John David Anglin  dave.anglin@bell.net