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authorKirill A. Shutemov <kirill@shutemov.name>2009-09-25 13:39:47 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2009-10-02 22:34:32 +0100
commit4fb2847437d871fe579f820ceb18031db3359901 (patch)
treee2015dbc54178dd114eb0c41fa5a29d89dd15b41 /arch/microblaze
parent6806bfe18fca92e2001538b84cab5f63c5ea4bed (diff)
downloadop-kernel-dev-4fb2847437d871fe579f820ceb18031db3359901.zip
op-kernel-dev-4fb2847437d871fe579f820ceb18031db3359901.tar.gz
ARM: 5727/1: Pass IFSR register to do_PrefetchAbort()
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@shutemov.name> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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