Messages in this thread |  | | Date | Mon, 24 Feb 2014 09:51:33 -0800 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH v5 2/3] x86, mpx: hook #BR exception handler to allocate bound tables |
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On 02/24/2014 09:27 AM, Dave Hansen wrote: > > Can you talk a little bit about what the design is here? Why does the > kernel have to do the allocation of the virtual address space? Does it > really need to MAP_POPULATE? bt_size looks like 4MB, and that's an > awful lot of memory to eat up at once. Shouldn't we just let the kernel > demand-fault this like everything else? >
MAP_POPULATE definitely seems like the wrong thing.
-hpa
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