If this was to be extended with cached global syscall information like
gettimeofday, would we want that to be in a separate page that is marked
non-executable? Is there any way to trick the kernel into leaking arbitrary
(and thus executable) code? Also, would it matter for jails? Per-process info
like getpid would obviously have to be a separate per-process page.
Scott
In the talk about this sort of topic I have seen mention at various times
of a page per system, a page per jail, a page per process and a page
per thread.
I'm not saying we want this all just that I've seen it mentionned..
The per-thread one is the most intersting to do challenge wise.
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