[PATCH v4, REBASED 1/2] ARM: Pass IFSR register to do_PrefetchAbort()

[Kirill A. Shutemov]

On Tue, Sep 22, 2009 at 2:00 PM, Kirill A. Shutemov
<kirill at shutemov.name> wrote:
> Instruction fault status register, IFSR, was introduced on ARMv6 to
> provide status information about the last insturction fault. It
> needed for proper prefetch abort handling.
>
> Now we have three prefetch abort model:
>
>  * legacy - for CPUs before ARMv6. They doesn't provide neither
>    IFSR nor IFAR. We simulate IFSR with section translation fault
>    status for them to generalize code;
>  * ARMv6 - provides IFSR, but not IFAR;
>  * ARMv7 - provides both IFSR and IFAR.
>
> Signed-off-by: Kirill A. Shutemov <kirill at shutemov.name>

Any feedback?