[PATCH] powerpc/64: indirect function call use bctrl rather than blrl in ret_from_kernel_thread

Michael Ellerman patch-notifications at ellerman.id.au
Fri Jun 26 14:46:03 AEST 2020


On Thu, 11 Jun 2020 22:11:19 +1000, Nicholas Piggin wrote:
> blrl is not recommended to use as an indirect function call, as it may
> corrupt the link stack predictor.
> 
> This is not a performance critical path but this should be fixed for
> consistency.

Applied to powerpc/next.

[1/1] powerpc/64: indirect function call use bctrl rather than blrl in ret_from_kernel_thread
      https://git.kernel.org/powerpc/c/89bbe4c798bc3a43c882179adb5222c1a972ac70

cheers


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