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

From: H. Peter Anvin
Date: Thu Apr 19 2012 - 18:16:21 EST

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...


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