[PATCH v4 22/30] KVM: arm64: Move some kvm_psci functions to a shared header

[Fuad Tabba <tabba@google.com>]

Move some PSCI functions and macros to a shared header to be used
by hyp in protected mode.

No functional change intended.

Signed-off-by: Fuad Tabba <tabba@google.com>
---
 arch/arm64/kvm/psci.c  | 28 ----------------------------
 include/kvm/arm_psci.h | 29 +++++++++++++++++++++++++++++
 2 files changed, 29 insertions(+), 28 deletions(-)

diff --git a/arch/arm64/kvm/psci.c b/arch/arm64/kvm/psci.c
index 1f69b667332b..43458949d955 100644
--- a/arch/arm64/kvm/psci.c
+++ b/arch/arm64/kvm/psci.c
@@ -21,16 +21,6 @@
  * as described in ARM document number ARM DEN 0022A.
  */
 
-#define AFFINITY_MASK(level)	~((0x1UL << ((level) * MPIDR_LEVEL_BITS)) - 1)
-
-static unsigned long psci_affinity_mask(unsigned long affinity_level)
-{
-	if (affinity_level <= 3)
-		return MPIDR_HWID_BITMASK & AFFINITY_MASK(affinity_level);
-
-	return 0;
-}
-
 static unsigned long kvm_psci_vcpu_suspend(struct kvm_vcpu *vcpu)
 {
 	/*
@@ -51,12 +41,6 @@ static unsigned long kvm_psci_vcpu_suspend(struct kvm_vcpu *vcpu)
 	return PSCI_RET_SUCCESS;
 }
 
-static inline bool kvm_psci_valid_affinity(struct kvm_vcpu *vcpu,
-					   unsigned long affinity)
-{
-	return !(affinity & ~MPIDR_HWID_BITMASK);
-}
-
 static unsigned long kvm_psci_vcpu_on(struct kvm_vcpu *source_vcpu)
 {
 	struct vcpu_reset_state *reset_state;
@@ -214,18 +198,6 @@ static void kvm_psci_system_suspend(struct kvm_vcpu *vcpu)
 	run->exit_reason = KVM_EXIT_SYSTEM_EVENT;
 }
 
-static void kvm_psci_narrow_to_32bit(struct kvm_vcpu *vcpu)
-{
-	int i;
-
-	/*
-	 * Zero the input registers' upper 32 bits. They will be fully
-	 * zeroed on exit, so we're fine changing them in place.
-	 */
-	for (i = 1; i < 4; i++)
-		vcpu_set_reg(vcpu, i, lower_32_bits(vcpu_get_reg(vcpu, i)));
-}
-
 static unsigned long kvm_psci_check_allowed_function(struct kvm_vcpu *vcpu, u32 fn)
 {
 	/*
diff --git a/include/kvm/arm_psci.h b/include/kvm/arm_psci.h
index e8fb624013d1..c86f228efae1 100644
--- a/include/kvm/arm_psci.h
+++ b/include/kvm/arm_psci.h
@@ -36,6 +36,35 @@ static inline int kvm_psci_version(struct kvm_vcpu *vcpu)
 	return KVM_ARM_PSCI_0_1;
 }
 
+/* Narrow the PSCI register arguments (r1 to r3) to 32 bits. */
+static inline void kvm_psci_narrow_to_32bit(struct kvm_vcpu *vcpu)
+{
+	int i;
+
+	/*
+	 * Zero the input registers' upper 32 bits. They will be fully
+	 * zeroed on exit, so we're fine changing them in place.
+	 */
+	for (i = 1; i < 4; i++)
+		vcpu_set_reg(vcpu, i, lower_32_bits(vcpu_get_reg(vcpu, i)));
+}
+
+static inline bool kvm_psci_valid_affinity(struct kvm_vcpu *vcpu,
+					   unsigned long affinity)
+{
+	return !(affinity & ~MPIDR_HWID_BITMASK);
+}
+
+
+#define AFFINITY_MASK(level)	~((0x1UL << ((level) * MPIDR_LEVEL_BITS)) - 1)
+
+static inline unsigned long psci_affinity_mask(unsigned long affinity_level)
+{
+	if (affinity_level <= 3)
+		return MPIDR_HWID_BITMASK & AFFINITY_MASK(affinity_level);
+
+	return 0;
+}
 
 int kvm_psci_call(struct kvm_vcpu *vcpu);
 
-- 
2.44.0.769.g3c40516874-goog