[PATCH 0/2] KVM: fix sparse warnings

[PATCH 0/2] KVM: fix sparse warnings

[Hannes Eder]

The following fix some sparse warnings in KVM.

---

Hannes Eder (2):
      KVM: fix sparse warnings: Should it be static?
      KVM: fix sparse warnings: context imbalance


 arch/x86/kvm/i8259.c |    2 ++
 arch/x86/kvm/mmu.c   |   11 ++++++-----
 arch/x86/kvm/x86.c   |    8 ++++----
 virt/kvm/irq_comm.c  |    4 ++--
 4 files changed, 14 insertions(+), 11 deletions(-)

[PATCH 1/2] KVM: fix sparse warnings: context imbalance

[Hannes Eder]

Impact: Attribute function with __acquires(...) resp. __releases(...).

Fix this sparse warnings:
  arch/x86/kvm/i8259.c:34:13: warning: context imbalance in 'pic_lock' - wrong count at exit
  arch/x86/kvm/i8259.c:39:13: warning: context imbalance in 'pic_unlock' - unexpected unlock

Signed-off-by: Hannes Eder <hannes@hanneseder.net>
---
 arch/x86/kvm/i8259.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kvm/i8259.c b/arch/x86/kvm/i8259.c
index 9316037..a095415 100644
--- a/arch/x86/kvm/i8259.c
+++ b/arch/x86/kvm/i8259.c
@@ -32,11 +32,13 @@
 #include <linux/kvm_host.h>
 
 static void pic_lock(struct kvm_pic *s)
+	__acquires(&s->lock)
 {
 	spin_lock(&s->lock);
 }
 
 static void pic_unlock(struct kvm_pic *s)
+	__releases(&s->lock)
 {
 	struct kvm *kvm = s->kvm;
 	unsigned acks = s->pending_acks;

[PATCH 2/2] KVM: fix sparse warnings: Should it be static?

[Hannes Eder]

Impact: Make symbols static.

Fix this sparse warnings:
  arch/x86/kvm/mmu.c:992:5: warning: symbol 'mmu_pages_add' was not declared. Should it be static?
  arch/x86/kvm/mmu.c:1124:5: warning: symbol 'mmu_pages_next' was not declared. Should it be static?
  arch/x86/kvm/mmu.c:1144:6: warning: symbol 'mmu_pages_clear_parents' was not declared. Should it be static?
  arch/x86/kvm/x86.c:2037:5: warning: symbol 'kvm_read_guest_virt' was not declared. Should it be static?
  arch/x86/kvm/x86.c:2067:5: warning: symbol 'kvm_write_guest_virt' was not declared. Should it be static?
  virt/kvm/irq_comm.c:220:5: warning: symbol 'setup_routing_entry' was not declared. Should it be static?

Signed-off-by: Hannes Eder <hannes@hanneseder.net>
---
 arch/x86/kvm/mmu.c  |   11 ++++++-----
 arch/x86/kvm/x86.c  |    8 ++++----
 virt/kvm/irq_comm.c |    4 ++--
 3 files changed, 12 insertions(+), 11 deletions(-)

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 4a21b0f..2a36f7f 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -989,8 +989,8 @@ struct kvm_mmu_pages {
 	     idx < 512;					\
 	     idx = find_next_bit(bitmap, 512, idx+1))
 
-int mmu_pages_add(struct kvm_mmu_pages *pvec, struct kvm_mmu_page *sp,
-		   int idx)
+static int mmu_pages_add(struct kvm_mmu_pages *pvec, struct kvm_mmu_page *sp,
+			 int idx)
 {
 	int i;
 
@@ -1121,8 +1121,9 @@ struct mmu_page_path {
 			i < pvec.nr && ({ sp = pvec.page[i].sp; 1;});	\
 			i = mmu_pages_next(&pvec, &parents, i))
 
-int mmu_pages_next(struct kvm_mmu_pages *pvec, struct mmu_page_path *parents,
-		   int i)
+static int mmu_pages_next(struct kvm_mmu_pages *pvec,
+			  struct mmu_page_path *parents,
+			  int i)
 {
 	int n;
 
@@ -1141,7 +1142,7 @@ int mmu_pages_next(struct kvm_mmu_pages *pvec, struct mmu_page_path *parents,
 	return n;
 }
 
-void mmu_pages_clear_parents(struct mmu_page_path *parents)
+static void mmu_pages_clear_parents(struct mmu_page_path *parents)
 {
 	struct kvm_mmu_page *sp;
 	unsigned int level = 0;
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 05d7be8..69ca2d1 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -2034,8 +2034,8 @@ static struct kvm_io_device *vcpu_find_mmio_dev(struct kvm_vcpu *vcpu,
 	return dev;
 }
 
-int kvm_read_guest_virt(gva_t addr, void *val, unsigned int bytes,
-			struct kvm_vcpu *vcpu)
+static int kvm_read_guest_virt(gva_t addr, void *val, unsigned int bytes,
+			       struct kvm_vcpu *vcpu)
 {
 	void *data = val;
 	int r = X86EMUL_CONTINUE;
@@ -2064,8 +2064,8 @@ out:
 	return r;
 }
 
-int kvm_write_guest_virt(gva_t addr, void *val, unsigned int bytes,
-			 struct kvm_vcpu *vcpu)
+static int kvm_write_guest_virt(gva_t addr, void *val, unsigned int bytes,
+				struct kvm_vcpu *vcpu)
 {
 	void *data = val;
 	int r = X86EMUL_CONTINUE;
diff --git a/virt/kvm/irq_comm.c b/virt/kvm/irq_comm.c
index 6bc7439..c2de19b 100644
--- a/virt/kvm/irq_comm.c
+++ b/virt/kvm/irq_comm.c
@@ -217,8 +217,8 @@ void kvm_free_irq_routing(struct kvm *kvm)
 	__kvm_free_irq_routing(&kvm->irq_routing);
 }
 
-int setup_routing_entry(struct kvm_kernel_irq_routing_entry *e,
-			const struct kvm_irq_routing_entry *ue)
+static int setup_routing_entry(struct kvm_kernel_irq_routing_entry *e,
+			       const struct kvm_irq_routing_entry *ue)
 {
 	int r = -EINVAL;
 	int delta;

Re: [PATCH 0/2] KVM: fix sparse warnings

[Avi Kivity]

Hannes Eder wrote:
> The following fix some sparse warnings in KVM.
>   

Applied both, thanks.

-- 
error compiling committee.c: too many arguments to function