ppc: FP exceptions are always precise
We don't implement imprecise FP exceptions and using store_current which sets SRR1 to the *previous* instruction never makes sense for these. So let's be truthful and make them precise, which is allowed by the architecture. Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au>
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