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

[Aaro Koskinen]

Hello,

Kirill A. Shutemov wrote:
> >  #ifdef CONFIG_CPU_PABRT_NOIFAR
> > -# ifdef CPU_PABORT_HANDLER
> > +# ifdef CPU_PABORT_HANDLER_IFAR
> >  #  define MULTI_PABORT 1
> >  # else
> > -#  define CPU_PABORT_HANDLER(reg, insn)        mov reg, insn
> > +#  define CPU_PABORT_HANDLER_IFAR(reg, insn)   mov reg, insn
> > +#  define CPU_PABORT_HANDLER_IFSR(reg)         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...

A.
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