Re: [PATCH 01/10] MIPS: Add core files for MIPS SEAD-3 development platform.

[Shinya Kuribayashi <shinya.kuribayashi.px@renesas.com>]

Hi Steven-san,

On 5/8/2012 5:16 AM, Hill, Steven wrote:
> I will certainly remove CONFIG_CPU_HAS_LLSC, thank you. I attempted to
> enable 'cpu_has_clo_clz' for SEAD-3, but it breaks my microMIPS-only
> kernel builds. Specifically, since microMIPS LL/SC instructions do
> not have 16-bit address offsets, in the '__cmpxchg_asm' macro function
> I get constraint errors because then the assembler has to use the %LO
> register in order to calculate the offset address. I am going to hold
> off on enabling the option until after the 3.5 release and then
> revisit for a solution. Thank you.

Got it, find no problems with your plan.  It seems there must be other
issues with optimization on microMIPS-only kernels :-)
-- 
Shinya Kuribayashi
Renesas Electronics