Use of GCC __attribute__(("FIQ")) in Linux kernel?

[Nicolas Pitre]

On Wed, 18 May 2011, Chung-Lin Tang wrote:

> Hi kernel folks,
> there's an upstream GCC PR about banked registers not being properly
> utilized in FIQ routines, specified by GCC attibutes, see here:
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48429
> 
> I was just wondering, is this GCC __attribute__(("FIQ")) feature used in
> the Linux kernel as well, or are the entry paths in Linux already done
> in assembler?

All FIQ related code in the kernel is in assembler.


Nicolas