[PATCH v5 1/2] ARM: Pass IFSR register to do_PrefetchAbort()
Kirill A. Shutemov
kirill at shutemov.name
Thu Oct 1 03:15:38 EDT 2009
On Thu, Sep 24, 2009 at 11:49 AM, 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 chances to get it into 2.6.32?
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