Subject: Re: [05/13] powerpc/64s: interrupt replay balance the return branch predictor

From: Michael Ellerman <[email-masked]>
Date: Mon, 19 Jun 2017 22:25:43 +1000 (AEST)

On Tue, 2017-06-13 at 13:05:49 UTC, Nicholas Piggin wrote:
> The __replay_interrupt code is branched to with bl, but the caller is
> returned to directly with rfid from the interrupt.
> 
> Instead, rfid to a stub that returns to the caller with blr, which
> should keep the return branch predictor balanced.
> 
> Reviewed-by: Gautham R. Shenoy <[email-masked]>
> Signed-off-by: Nicholas Piggin <[email-masked]>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/b48bbb82e2b83537c500417d60218a

cheers