This is a note to let you know that I've just added the patch titled powerpc: Fix build error in paravirt.h to the 5.11-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: powerpc-fix-build-error-in-paravirt.h.patch and it can be found in the queue-5.11 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit e72c6aaeda4a3c9836070aa942548bd449081bb6 Author: Michal Suchanek <msuchanek@xxxxxxx> Date: Wed Jan 20 14:28:38 2021 +0100 powerpc: Fix build error in paravirt.h [ Upstream commit 9899a56f1eca964cd0de21008a9fa1523a571231 ] ./arch/powerpc/include/asm/paravirt.h:83:44: error: implicit declaration of function 'smp_processor_id'; did you mean 'raw_smp_processor_id'? smp_processor_id is defined in linux/smp.h but it is not included. The build error happens only when the patch is applied to 5.3 kernel but it only works by chance in mainline. Fixes: ca3f969dcb11 ("powerpc/paravirt: Use is_kvm_guest() in vcpu_is_preempted()") Signed-off-by: Michal Suchanek <msuchanek@xxxxxxx> Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20210120132838.15589-1-msuchanek@xxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/arch/powerpc/include/asm/paravirt.h b/arch/powerpc/include/asm/paravirt.h index edc08f04aef77..5d1726bb28e79 100644 --- a/arch/powerpc/include/asm/paravirt.h +++ b/arch/powerpc/include/asm/paravirt.h @@ -10,6 +10,7 @@ #endif #ifdef CONFIG_PPC_SPLPAR +#include <linux/smp.h> #include <asm/kvm_guest.h> #include <asm/cputhreads.h>