On 11/30/2017 10:55 AM, Peter Zijlstra wrote: >> __flush_tlb() does a flushing CR3 write that flushes the current PCID. >> If we need other PCIDs flushed, we have to do it via the >> tlb_flush_shared_nonglobals() mechanism. > But the thing is, you _cannot_ have PCID enabled in that branch.
Is there some hardware limitation that I'm missing?
