Re: [Xen-devel] [PATCH XEN v6 22/32] tools/libs/foreignmemory: optimise map(num==1, err==NULL) case

[Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>]

Ian Campbell writes ("[PATCH XEN v6 22/32] tools/libs/foreignmemory: optimise 
map(num==1, err==NULL) case"):
> This looks to be a reasonably common case (many of the previous
> callers to xc_map_foreign_pages use it) and it is easy enough to avoid
> a malloc for it.
...
> I'm not 100% sure this is worth the complexity, hence not folding
> into the base patch yet, it could easily be dropped.

I would suggest that we should park this until we have a benchmark
showing it's helpful.

Ian.

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