Re: [RFC GIT PULL] softirq: Consolidation and stack overrun fix

[H. Peter Anvin]

On 09/22/2013 09:24 AM, Peter Zijlstra wrote:
> 
> As to the problem of GCC moving r13 about, some archs have some
> exceptions in the register allocator and leave some registers alone.
> IIRC MIPS has this and uses one of those (istr there's 2) for the
> per cpu base address.
> 

You can force gcc to leave a register alone with the command line option
-ffixed-r13.

	-hpa

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