Re: [PATCH] flush icache before set_pte() take 5.

[KAMEZAWA Hiroyuki]

On Mon, 30 Jul 2007 16:30:50 +0200
Zoltan Menyhart <Zoltan.Menyhart@xxxxxxxx> wrote:

> KAMEZAWA Hiroyuki wrote:
> 
> > Considerations:
> >   - I can add CONFIG_MONTECITO if necessary. But it will be confusing, I think.
> 
> What about this trick below?
> 
> identify_cpu() finds out the "c->family".
> If any of the CPUs has c->family==32 (and the future versions...) then
> set a global flag. And:
> 
> static inline void sync_icache_dcache(pte_t pte) {
>         if (pte_exec(pte) && global_flag)
>                 __sync_icache_dcache(pte);
> }
> 
Hmm...maybe better for old cpus even if cache miss occurs here.
I'll add add-on patch in take6.

Thanks,
-Kame

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