linux-kernel - [PATCH] powerpc: Fix build error in paravirt.h

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Date:   Wed, 20 Jan 2021 14:28:38 +0100
From:   Michal Suchanek <msuchanek@...e.de>
To:     linuxppc-dev@...ts.ozlabs.org
Cc:     Michal Suchanek <msuchanek@...e.de>,
        Juergen Gross <jgross@...e.com>, Deep Shah <sdeep@...are.com>,
        "VMware, Inc." <pv-drivers@...are.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Waiman Long <longman@...hat.com>,
        Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
        virtualization@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] powerpc: Fix build error in paravirt.h

./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@...e.de>
---
 arch/powerpc/include/asm/paravirt.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/powerpc/include/asm/paravirt.h b/arch/powerpc/include/asm/paravirt.h
index edc08f04aef7..5d1726bb28e7 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>
 
-- 
2.26.2