29d37118d7
Replace tlb_flush_local() by tlb_flush() as even not global mappings could be fetched to TLB(s) on other cores by speculative table walk. From OS point of view, it was not a problem as either such mappings were not used anymore or they were flushed from TLB(s) when reused. However, from hardware point of view, it was a problem. Not flushed mappings could be a target for speculative reads or prefetches (which might be quite aggresive on ARM cores). As speculative read can fill cacheline, it can cause a real problem, when physical page is reused, but mapped with different memory attributes. Anyhow, it's good to have only valid mappings in TLB(s). Approved by: kib (mentor)
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