Does SMP work at all on 40x ?

[Benjamin Herrenschmidt]

On Wed, 2019-01-30 at 08:16 +0100, Christophe Leroy wrote:
> In transfer_to_handler() (entry_32.S), we have:
> 
> #if defined(CONFIG_40x) || defined(CONFIG_BOOKE)
> ...
> #ifdef CONFIG_SMP
> 	CURRENT_THREAD_INFO(r9, r1)
> 	lwz	r9,TI_CPU(r9)
> 	slwi	r9,r9,3
> 	add	r11,r11,r9
> #endif
> #endif
> 
> When running this piece of code, MMU translation is off. But r9 contains 
> the virtual addr of current_thread_info, so unless I miss something, 
> this cannot work on the 40x, can it ?
> 
> On CONFIG_BOOKE it works because phys addr = virt addr

There is no 40x SMP that I am aware of.

Cheers,
Ben.