Re: [PATCH v2 1/2] x86/retpoline: Simplify vmexit_fill_RSB()
From: Konrad Rzeszutek Wilk
Date: Fri Jan 26 2018 - 23:21:02 EST
> + * Google experimented with loop-unrolling and this turned out to be
> + * the optimal version â two calls, each with their own speculation
> + * trap should their return address end up getting used, in a loop.
> + */
> +.macro BOINK_RSB nr:req sp:req
BOINK?
Really?