[PATCH v2 3/3] KVM: arm64: vgic: fix unexpected unlock sparse warnings

Sebastian Ott
2024-07-23T10:12:22Z

Get rid of unexpected unlock sparse warnings in vgic code
by adding an annotation to vgic_queue_irq_unlock().

arch/arm64/kvm/vgic/vgic.c:334:17: warning: context imbalance in 'vgic_queue_irq_unlock' - unexpected unlock
arch/arm64/kvm/vgic/vgic.c:419:5: warning: context imbalance in 'kvm_vgic_inject_irq' - different lock contexts for basic block

Signed-off-by: Sebastian Ott <sebott@redhat.com>
---
arch/arm64/kvm/vgic/vgic.c | 2 +-
arch/arm64/kvm/vgic/vgic.h | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/kvm/vgic/vgic.c b/arch/arm64/kvm/vgic/vgic.c
index f07b3ddff7d4..974849ea7101 100644
--- a/arch/arm64/kvm/vgic/vgic.c
+++ b/arch/arm64/kvm/vgic/vgic.c
@@ -313,7 +313,7 @@ static bool vgic_validate_injection(struct vgic_irq *irq, bool level, void *owne
* with all locks dropped.
*/
bool vgic_queue_irq_unlock(struct kvm *kvm, struct vgic_irq *irq,
- unsigned long flags)
+ unsigned long flags) __releases(&irq->irq_lock)
{
struct kvm_vcpu *vcpu;

diff --git a/arch/arm64/kvm/vgic/vgic.h b/arch/arm64/kvm/vgic/vgic.h
index 03d356a12377..ba8f790431bd 100644
--- a/arch/arm64/kvm/vgic/vgic.h
+++ b/arch/arm64/kvm/vgic/vgic.h
@@ -186,7 +186,7 @@ bool vgic_get_phys_line_level(struct vgic_irq *irq);
void vgic_irq_set_phys_pending(struct vgic_irq *irq, bool pending);
void vgic_irq_set_phys_active(struct vgic_irq *irq, bool active);
bool vgic_queue_irq_unlock(struct kvm *kvm, struct vgic_irq *irq,
- unsigned long flags);
+ unsigned long flags) __releases(&irq->irq_lock);
void vgic_kick_vcpus(struct kvm *kvm);
void vgic_irq_handle_resampling(struct vgic_irq *irq,
bool lr_deactivated, bool lr_pending);
--
2.42.0