Re: [PATCH] Built kernel without -O2 option

Valdis.Kletnieks
2010-11-29T18:05:00Z

[-- Attachment #1: Type: text/plain, Size: 621 bytes --]

On Mon, 29 Nov 2010 16:52:50 +0800, Américo Wang said:

> >For example:
> >ifdef CONFIG_CC_CLOSE_OPTIMIZATION
> >CFLAGS_fpu.o += -O2
> >CFLAGS_aesni-intel_glue.o += -O2
> >CFLAGS_ghash-clmulni-intel_glue.o += -O2
> >endif
>
> No, I didn't mean this, I meant some function that have to be inlined
> are those who only work when being inlined, e.g. current_text_addr().
>
> I think it is not alone. :)

Anything that uses the gcc __builtin_return_adress() extension should also be
audited - that returns different results for inlined and non-inlined callers.

[-- Attachment #2: Type: application/pgp-signature, Size: 227 bytes --]