powerpc: Rename is_kvm_guest() to check_kvm_guest()

We want to reuse the is_kvm_guest() name in a subsequent patch but
with a new body. Hence rename is_kvm_guest() to check_kvm_guest(). No
additional changes.

Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Acked-by: Waiman Long <longman@redhat.com>
Signed-off-by: kernel test robot <lkp@intel.com> # int -> bool fix
[mpe: Fold in fix from lkp to use true/false not 0/1]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20201202050456.164005-3-srikar@linux.vnet.ibm.com

arch/powerpc/include/asm/kvm_guest.h

@@ -7,9 +7,9 @@
 #define _ASM_POWERPC_KVM_GUEST_H_
 
 #if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_KVM_GUEST)
-bool is_kvm_guest(void);
+bool check_kvm_guest(void);
 #else
-static inline bool is_kvm_guest(void) { return false; }
+static inline bool check_kvm_guest(void) { return false; }
 #endif
 
 #endif /* _ASM_POWERPC_KVM_GUEST_H_ */

arch/powerpc/include/asm/kvm_para.h

@@ -14,7 +14,7 @@
 
 static inline int kvm_para_available(void)
 {
-	return IS_ENABLED(CONFIG_KVM_GUEST) && is_kvm_guest();
+	return IS_ENABLED(CONFIG_KVM_GUEST) && check_kvm_guest();
 }
 
 static inline unsigned int kvm_arch_para_features(void)

arch/powerpc/kernel/firmware.c

@@ -22,17 +22,17 @@ EXPORT_SYMBOL_GPL(powerpc_firmware_features);
 #endif
 
 #if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_KVM_GUEST)
-bool is_kvm_guest(void)
+bool check_kvm_guest(void)
 {
 	struct device_node *hyper_node;
 
 	hyper_node = of_find_node_by_path("/hypervisor");
 	if (!hyper_node)
-		return 0;
+		return false;
 
 	if (!of_device_is_compatible(hyper_node, "linux,kvm"))
-		return 0;
+		return false;
 
-	return 1;
+	return true;
 }
 #endif

arch/powerpc/platforms/pseries/smp.c

@@ -211,7 +211,7 @@ static __init void pSeries_smp_probe(void)
 	if (!cpu_has_feature(CPU_FTR_SMT))
 		return;
 
-	if (is_kvm_guest()) {
+	if (check_kvm_guest()) {
 		/*
 		 * KVM emulates doorbells by disabling FSCR[MSGP] so msgsndp
 		 * faults to the hypervisor which then reads the instruction