[PATCH v2] riscv: kvm: define vcpu_sbi_ext_pmu in header

[Ben Dooks]

Sparse is giving a warning about vcpu_sbi_ext_pmu not being
defined, so add a definition to the relevant header to fix
the following:

arch/riscv/kvm/vcpu_sbi_pmu.c:81:37: warning: symbol 'vcpu_sbi_ext_pmu' was not declared. Should it be static?

Fixes: cbddc4c4cb9e ("RISC-V: KVM: Add SBI PMU extension support")
Signed-off-by: Ben Dooks <ben.dooks@xxxxxxxxxxxxxxx>
---
v2:
  - correct the fixes tag as suggested by Conor Dooley
---
 arch/riscv/include/asm/kvm_vcpu_sbi.h | 3 +++
 arch/riscv/kvm/vcpu_sbi.c             | 4 +---
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/arch/riscv/include/asm/kvm_vcpu_sbi.h b/arch/riscv/include/asm/kvm_vcpu_sbi.h
index 4278125a38a5..b94c7e958da7 100644
--- a/arch/riscv/include/asm/kvm_vcpu_sbi.h
+++ b/arch/riscv/include/asm/kvm_vcpu_sbi.h
@@ -66,4 +66,7 @@ extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_hsm;
 extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_experimental;
 extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_vendor;
 
+#ifdef CONFIG_RISCV_PMU_SBI
+extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_pmu;
+#endif
 #endif /* __RISCV_KVM_VCPU_SBI_H__ */
diff --git a/arch/riscv/kvm/vcpu_sbi.c b/arch/riscv/kvm/vcpu_sbi.c
index e52fde504433..c973d92a0ba5 100644
--- a/arch/riscv/kvm/vcpu_sbi.c
+++ b/arch/riscv/kvm/vcpu_sbi.c
@@ -20,9 +20,7 @@ static const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_v01 = {
 };
 #endif
 
-#ifdef CONFIG_RISCV_PMU_SBI
-extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_pmu;
-#else
+#ifndef CONFIG_RISCV_PMU_SBI
 static const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_pmu = {
 	.extid_start = -1UL,
 	.extid_end = -1UL,
-- 
2.39.2