linux-kernel - [PATCH v2 1/4] powerpc: Refactor is_kvm

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Message-Id: <20201202050456.164005-2-srikar@linux.vnet.ibm.com>
Date:   Wed,  2 Dec 2020 10:34:53 +0530
From:   Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
To:     Michael Ellerman <mpe@...erman.id.au>
Cc:     linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
        Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Nicholas Piggin <npiggin@...il.com>,
        Nathan Lynch <nathanl@...ux.ibm.com>,
        Gautham R Shenoy <ego@...ux.vnet.ibm.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Valentin Schneider <valentin.schneider@....com>,
        Juri Lelli <juri.lelli@...hat.com>,
        Waiman Long <longman@...hat.com>, Phil Auld <pauld@...hat.com>
Subject: [PATCH v2 1/4] powerpc: Refactor is_kvm_guest declaration to new header

Only code/declaration movement, in anticipation of doing a kvm-aware
vcpu_is_preempted. No additional changes.

Cc: linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>
Cc: LKML <linux-kernel@...r.kernel.org>
Cc: Michael Ellerman <mpe@...erman.id.au>
Cc: Nicholas Piggin <npiggin@...il.com>
Cc: Nathan Lynch <nathanl@...ux.ibm.com>
Cc: Gautham R Shenoy <ego@...ux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Valentin Schneider <valentin.schneider@....com>
Cc: Juri Lelli <juri.lelli@...hat.com>
Cc: Waiman Long <longman@...hat.com>
Cc: Phil Auld <pauld@...hat.com>
Acked-by: Waiman Long <longman@...hat.com>
Signed-off-by: Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
---
Changelog:
v1->v2:
v1: https://lore.kernel.org/linuxppc-dev/20201028123512.871051-1-srikar@linux.vnet.ibm.com/t/#u
 - Moved a hunk to fix a no previous prototype warning reported by: lkp@...el.com
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org/thread/C6PTRPHWMC7VV4OTYN3ISYKDHTDQS6YI/

 arch/powerpc/include/asm/firmware.h  |  6 ------
 arch/powerpc/include/asm/kvm_guest.h | 15 +++++++++++++++
 arch/powerpc/include/asm/kvm_para.h  |  2 +-
 arch/powerpc/kernel/firmware.c       |  1 +
 arch/powerpc/platforms/pseries/smp.c |  1 +
 5 files changed, 18 insertions(+), 7 deletions(-)
 create mode 100644 arch/powerpc/include/asm/kvm_guest.h

diff --git a/arch/powerpc/include/asm/firmware.h b/arch/powerpc/include/asm/firmware.h
index 0b295bdb201e..aa6a5ef5d483 100644
--- a/arch/powerpc/include/asm/firmware.h
+++ b/arch/powerpc/include/asm/firmware.h
@@ -134,12 +134,6 @@ extern int ibm_nmi_interlock_token;
 
 extern unsigned int __start___fw_ftr_fixup, __stop___fw_ftr_fixup;
 
-#if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_KVM_GUEST)
-bool is_kvm_guest(void);
-#else
-static inline bool is_kvm_guest(void) { return false; }
-#endif
-
 #ifdef CONFIG_PPC_PSERIES
 void pseries_probe_fw_features(void);
 #else
diff --git a/arch/powerpc/include/asm/kvm_guest.h b/arch/powerpc/include/asm/kvm_guest.h
new file mode 100644
index 000000000000..c0ace884a0e8
--- /dev/null
+++ b/arch/powerpc/include/asm/kvm_guest.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2020  IBM Corporation
+ */
+
+#ifndef __POWERPC_KVM_GUEST_H__
+#define __POWERPC_KVM_GUEST_H__
+
+#if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_KVM_GUEST)
+bool is_kvm_guest(void);
+#else
+static inline bool is_kvm_guest(void) { return false; }
+#endif
+
+#endif /* __POWERPC_KVM_GUEST_H__ */
diff --git a/arch/powerpc/include/asm/kvm_para.h b/arch/powerpc/include/asm/kvm_para.h
index 744612054c94..abe1b5e82547 100644
--- a/arch/powerpc/include/asm/kvm_para.h
+++ b/arch/powerpc/include/asm/kvm_para.h
@@ -8,7 +8,7 @@
 #ifndef __POWERPC_KVM_PARA_H__
 #define __POWERPC_KVM_PARA_H__
 
-#include <asm/firmware.h>
+#include <asm/kvm_guest.h>
 
 #include <uapi/asm/kvm_para.h>
 
diff --git a/arch/powerpc/kernel/firmware.c b/arch/powerpc/kernel/firmware.c
index fe48d319d490..5f48e5ad24cd 100644
--- a/arch/powerpc/kernel/firmware.c
+++ b/arch/powerpc/kernel/firmware.c
@@ -14,6 +14,7 @@
 #include <linux/of.h>
 
 #include <asm/firmware.h>
+#include <asm/kvm_guest.h>
 
 #ifdef CONFIG_PPC64
 unsigned long powerpc_firmware_features __read_mostly;
diff --git a/arch/powerpc/platforms/pseries/smp.c b/arch/powerpc/platforms/pseries/smp.c
index 92922491a81c..d578732c545d 100644
--- a/arch/powerpc/platforms/pseries/smp.c
+++ b/arch/powerpc/platforms/pseries/smp.c
@@ -42,6 +42,7 @@
 #include <asm/plpar_wrappers.h>
 #include <asm/code-patching.h>
 #include <asm/svm.h>
+#include <asm/kvm_guest.h>
 
 #include "pseries.h"
 
-- 
2.18.4