Messages in this thread | | | Date | Thu, 19 Apr 2012 16:10:14 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH 3/3] x86, extable: Handle early exceptions |
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On 04/19/2012 03:58 PM, Linus Torvalds wrote: > > In fact, doing an "objdump" on the few modules I have, I didn't find a > *single* exception table entry. Maybe I did something wrong? Isn't it > the __ex_table in modules too? >
It is, but I suspect a lot of modules don't end up with any exception table entries, as the common forms of user space access are out of line.
I suspect that just finding the module we're in or not in before searching its ex_table is probably good enough, but a global hash would be better. That being said, some distros are complaining about the amount of time it takes to load modules on boot...
-hpa
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