From: "Edgecombe, Rick P" <rick.p.edgecombe@xxxxxxxxx> Date: Mon, 20 May 2019 22:17:49 +0000 > Thanks for testing. So I guess that suggests it's the TLB flush causing > the problem on sparc and not any lazy purge deadlock. I had sent Meelis > another test patch that just flushed the entire 0 to ULONG_MAX range to > try to always the get the "flush all" logic and apprently it didn't > boot mostly either. It also showed that it's not getting stuck anywhere > in the vm_remove_alias() function. Something just hangs later. I wonder if an address is making it to the TLB flush routines which is not page aligned. Or a TLB flush is being done before the callsites are patched properly for the given cpu type.
