Re: [PATCH] mm: fix RODATA_TEST failure "rodata_test: test data was not read only"

[Segher Boessenkool]

On Mon, Sep 25, 2017 at 04:01:55PM +0000, David Laight wrote:
> From: Segher Boessenkool
> > The compiler puts this item in .sdata, for 32-bit.  There is no .srodata,
> > so if it wants to use a small data section, it must use .sdata .
> > 
> > Non-external, non-referenced symbols are not put in .sdata, that is the
> > difference you see with the "static".
> > 
> > I don't think there is a bug here.  If you think there is, please open
> > a GCC bug.
> 
> The .sxxx sections are for 'small' data that can be accessed (typically)
> using small offsets from a global register.
> This means that all sections must be adjacent in the image.
> So you can't really have readonly small data.
> 
> My guess is that the linker script is putting .srodata in with .sdata.

.srodata does not *exist* (in the ABI).


Segher