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| H A D | traps.c | diff 172f7aaa75d0eaae167edde25c08aae9059e80fc Wed Sep 14 03:02:15 CDT 2016 Cyril Bur <cyrilbur@gmail.com> powerpc/tm: Add TM Unavailable Exception
If the kernel disables transactional memory (TM) and userspace still
tries TM related actions (TM instructions or TM SPR accesses) TM aware
hardware will cause the kernel to take a facility unavailable
exception.
Add checks for the exception being caused by illegal TM access in
userspace.
Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
[mpe: Rewrite comment entirely, bugs in it are mine]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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