Hi Peter,
Le 31/08/2021 à 16:00, Peter Zijlstra a écrit :
On Tue, Aug 31, 2021 at 01:12:26PM +, Christophe Leroy wrote:
Yes, this should work nicely!
Since you have the two nop's at the end, you could frob in an
optimization for __static_call_return0 without too much issue.
Replace the tw
On Tue, Aug 31, 2021 at 01:12:26PM +, Christophe Leroy wrote:
> diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
> index 36b72d972568..a0fe69d8ec83 100644
> --- a/arch/powerpc/Kconfig
> +++ b/arch/powerpc/Kconfig
> @@ -247,6 +247,7 @@ config PPC
> select HAVE_SOFTIRQ_ON_OWN_STACK
Add support for out-of-line static calls on PPC32. This change
improve performance of calls to global function pointers by
using direct calls instead of indirect calls.
The trampoline is initialy populated with a 'blr' or branch to target,
followed by an unreachable long jump sequence.
In order t
