On 7/1/06, Chase Venters <[email protected]> wrote:
On Fri, 30 Jun 2006, Magnus Damm wrote:
> The linker script arch/i386/kernel/vmlinux.lds.S mentions the following:
>
> /* .exit.text is discard at runtime, not link time, to deal with references
> from .altinstructions and .eh_frame */
.altinstructions is for alternatives code (code that is rewritten at
runtime based on some factor such as UP-vs-SMP). .eh_frame has call
framing information used for unwinding. I think it's copied into the
vsyscall page (not entirely familiar with this mechanism though).
Thanks for clarifying.
> The text above seems to answer my question, but I cannot say I fully
> understand the comment. I'd appreciate if someone could explain a bit
> more if possible.
>
> Ok, so the section should be discarded at runtime. Sounds ok. But
> where in the code is this section discarded? -ENOSYS?
When you see "Freeing unused kernel memory", the memory between
__init_begin and __init_end (as marked in vmlinux.ld.S) is released. See
arch-specific mm/init.c.
Oh, I see. It looks like things are working as expected then. Thank you!
Cheers,
/ magnus
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