Messages in this thread | | | Date | Fri, 6 Nov 2015 20:46:41 +0000 | From | Russell King - ARM Linux <> | Subject | Re: [PATCH] arm: Use kernel mm when updating section permissions |
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On Fri, Nov 06, 2015 at 10:44:32AM -0800, Laura Abbott wrote: > with my test patch. I think setting both current->active_mm and &init_mm > is sufficient. Maybe explicitly setting swapper_pg_dir would be cleaner?
Please, stop thinking like this. If you're trying to change the kernel section mappings after threads have been spawned, you need to change them for _all_ threads, which means you need to change them for every page table that's in existence at that time - you can't do just one table and hope everyone updates, it doesn't work like that.
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