Re: [PATCH 3/3] x86, extable: Handle early exceptions

H. Peter Anvin
2012-04-19T22:16:26Z

On 04/19/2012 01:17 PM, David Daney wrote:
>
> I usually see exception table sizes on the order of 2^10 entries, so I
> have to wonder how much you really gain from an O(1) implementation.
>

One thing that probably would give more of a boost is to use a rbtree or
similar structure to figure out *which* extable (if any) we should be
looking at; right now it looks like we linearly walk the modules, and
don't even look to see if we are inside that module before we do a
bsearch in that module's extable...

-hpa