Re: [PATCH v2] MIPS: Treat Loongson Extensions as ASEs

[Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx>]

On 2019/5/29 下午10:27, Philippe Mathieu-Daudé wrote:
> Hi Jiaxun,
>
> On 5/29/19 10:42 AM, Jiaxun Yang wrote:
> >   
> > @@ -1950,6 +1954,8 @@ static inline void cpu_probe_loongson(struct cpuinfo_mips *c, unsigned int cpu)
> >   		decode_configs(c);
> >   		c->options |= MIPS_CPU_FTLB | MIPS_CPU_TLBINV | MIPS_CPU_LDPTE;
> >   		c->writecombine = _CACHE_UNCACHED_ACCELERATED;
> > +		c->ases |= (MIPS_ASE_LOONGSON_MMI | MIPS_ASE_LOONGSON_CAM |
> > +			MIPS_ASE_LOONGSON_EXT | MIPS_ASE_LOONGSON_EXT2);
> You announce the Loongson 2E/2F as supporting the EXTensions R2 ASE, are
> you sure this is correct?
Hi Phil

Only Loongson 3A R2/R3 support EXT2. In this case, cpu_probe_loongson() 
only set the cap for Loongson 3A R2/R3, since Loongson-2E/F have legacy 
format of PRID and it's handeld by cpu_probe_legacy().

Thanks.

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Jiaxun Yang