Balbir Singh <bsinghar...@gmail.com> writes: > On 24/10/16 14:20, Aneesh Kumar K.V wrote: >> Before this patch, we used tlbiel, if we ever ran only on this core. >> That was mostly derived from the nohash usage of the same. But the >> ISA 3.0 clarifies tlbiel such that >> >> "All TLB entries that have all of the following properties are made >> invalid on the thread executing the tlbiel instruction" >> >> Hence use tlbiel, if we only ever ran on just the current cpu. >> > > Could you clarify the impact. The impact I see is that it could > lead to us thinking we invalidated the TLB across the core whereas > we did it only on the current thread? This could leave others threads > in the same core with invalid TLB's, if cpumask reported we ran on > other threads in the same core?
Correct. -aneesh
