Re: [patch 8/9] F00F bug fixup for i386 - use conditional calls

[Mathieu Desnoyers]

* Andrew Morton (akpm@xxxxxxxxxxxxxxxxxxxx) wrote:
 
> > Use the faster conditional calls for F00F bug handling in do_page_fault.
> > 
> 
> I guess this means that CONDCALL will be enabled on pretty much all i386,
> in which case making the whole feature Kconfigurable is starting to look
> marginal.
> 
> Perhaps a better approach would have to made this change dependent upon
> CONDCALL, rather than forcing it on.
> 

Do you mean making X86_F00F_BUG depend on COND_CALL instead of selecting
it ?

> > +	if (cond_call(fix_f00f, do_f00f_workaround(regs, address)))
> > +		return;
> 
> We do a cond_call() to an inlined function?  That's a bit weird, isn't it?
> 

Yes, but it works :) I will add this information to the documentation.

-- 
Mathieu Desnoyers
Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F  BA06 3F25 A8FE 3BAE 9A68
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