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[for,3.14.y,stable,23/47] KVM: ARM/arm64: fix broken __percpu annotation

Message ID 1430704362-6292-24-git-send-email-shannon.zhao@linaro.org
State New
Headers show

Commit Message

Shannon Zhao May 4, 2015, 1:52 a.m. UTC 
From: Will Deacon <will.deacon@arm.com>

commit 4000be423cb01a8d09de878bb8184511c49d4238 upstream.

Running sparse results in a bunch of noisy address space mismatches
thanks to the broken __percpu annotation on kvm_get_running_vcpus.

This function returns a pcpu pointer to a pointer, not a pointer to a
pcpu pointer. This patch fixes the annotation, which kills the warnings
from sparse.

Cc: Christoffer Dall <christoffer.dall@linaro.org>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
---
 arch/arm/kvm/arm.c                | 2 +-
 arch/arm64/include/asm/kvm_host.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
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Patch

diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c
index f92a7fb..df6e75e 100644
--- a/arch/arm/kvm/arm.c
+++ b/arch/arm/kvm/arm.c
@@ -82,7 +82,7 @@  struct kvm_vcpu *kvm_arm_get_running_vcpu(void)
 /**
  * kvm_arm_get_running_vcpus - get the per-CPU array of currently running vcpus.
  */
-struct kvm_vcpu __percpu **kvm_get_running_vcpus(void)
+struct kvm_vcpu * __percpu *kvm_get_running_vcpus(void)
 {
 	return &kvm_arm_running_vcpu;
 }
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index 518d000..3fb0946 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -177,7 +177,7 @@  static inline int kvm_test_age_hva(struct kvm *kvm, unsigned long hva)
 }
 
 struct kvm_vcpu *kvm_arm_get_running_vcpu(void);
-struct kvm_vcpu __percpu **kvm_get_running_vcpus(void);
+struct kvm_vcpu * __percpu *kvm_get_running_vcpus(void);
 
 u64 kvm_call_hyp(void *hypfn, ...);