On 2016-07-27 20:53, David Miller wrote:
On pre-Niagara systems, we fetch the fault address on data TLB exceptions from the TLB_TAG_ACCESS register. But this register also contains the context ID assosciated with the fault in the low 13 bits of the register value. This propagates into current_thread_info()->fault_address and can cause trouble later on. So clear the low 13-bits out of the TLB_TAG_ACCESS value in the cases where it matters.
I'm going to go ahead and give this patch a test on an E6K, i'll report my findings later tonight.
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