[PATCH 5/7] ARM: re-implement physical address space switching

[Russell King - ARM Linux]

On Mon, May 11, 2015 at 01:58:32PM -0500, Nishanth Menon wrote:
> On 05/06/2015 05:30 AM, Russell King wrote:
> [...]
> > @@ -1436,75 +1435,32 @@ void __init early_paging_init(const struct machine_desc *mdesc,
> 
> [...]
> > -	/* Finally flush any stale TLB values. */
> > -	local_flush_bp_all();
> > -	local_flush_tlb_all();
> > +	/* Re-enable the caches and cacheable TLB walks */
> > +	asm volatile("mcr p15, 0, %0, c2, c0, 2" : : "ttbcr");
> ^^
> on next-20150511, echo
> "CONFIG_ARM_LPAE=y">>arch/arm/configs/multi_v7_defconfig ;make
> multi_v7_defconfig;make arch/arm/mm/mmu.o
> #
> # configuration written to .config
> #
> scripts/kconfig/conf  --silentoldconfig Kconfig
> 
> <snip>
>   CC      arch/arm/mm/mmu.o
> arch/arm/mm/mmu.c: In function ‘early_paging_init’:
> arch/arm/mm/mmu.c:1461:54: error: expected ‘(’ before ‘)’ token
> make[1]: *** [arch/arm/mm/mmu.o] Error 1
> make: *** [arch/arm/mm/mmu.o] Error 2
> this was using [1]

That's why I said I'd send you an updated version.  Just replace the
"ttbcr" with "r" (ttbcr)...

-- 
FTTC broadband for 0.8mile line: currently at 10.5Mbps down 400kbps up
according to speedtest.net.