On Mon, 2018-01-08 at 23:26 +0100, Peter Zijlstra wrote: > > > is because that might get interpreted as a "push %rip" and not go on > > the RSB at all. Hence the 'pause' between each one. > > OK, then make the comment say that.
Fixed. I've also shifted the #ifdef CONFIG_RETPOLINE to the call sites instead of inside the FILL_RETURN_BUFFER macro itself. This is going to get used with IBRS code too, Real Soon Now™. http://git.infradead.org/users/dwmw2/linux-retpoline.git/commitdiff/6e961b86558
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