Re: [PATCH 1/2] ARM: Pass IFSR register to do_PrefetchAbort()

[Kirill A. Shutemov]

On Fri, Sep 18, 2009 at 5:52 PM, Aaro Koskinen <aaro.koskinen@xxxxxxxxx> wrote:
> Hello,
>
> Kirill A. Shutemov wrote:
>>>
>>> Â#ifdef CONFIG_CPU_PABRT_NOIFAR
>>> -# ifdef CPU_PABORT_HANDLER
>>> +# ifdef CPU_PABORT_HANDLER_IFAR
>>> Â# Âdefine MULTI_PABORT 1
>>> Â# else
>>> -# Âdefine CPU_PABORT_HANDLER(reg, insn) Â Â Â Âmov reg, insn
>>> +# Âdefine CPU_PABORT_HANDLER_IFAR(reg, insn) Â mov reg, insn
>>> +# Âdefine CPU_PABORT_HANDLER_IFSR(reg) Â Â Â Â mrc p15, 0, reg, cr5,
>>> cr0, 1
>>
>> It's incorrect. We have IFSR only on ARMv7.
>
> It seems my assumption on the availability of that register was wrong, but I
> think it's available at least on ARMv6, and also that IFAR can be
> optional...

I can't find anything in ARMv6-M Architecture Reference Manual by
keywords "ifar" or "ifsr".

>
> A.
>
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