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[4/5] KVM: arm64: vgic: Ensure that slots_lock is held in vgic_register_all_redist_iodevs()

Message ID 20231207151201.3028710-5-maz@kernel.org (mailing list archive)
State New, archived
Headers show
Series KVM: arm64: vgic fixes for 6.7 | expand

Commit Message

Marc Zyngier Dec. 7, 2023, 3:12 p.m. UTC 
Although we implicitly depend on slots_lock being held when registering
IO devices with the IO bus infrastructure, we don't enforce this
requirement. Make it explicit.

Signed-off-by: Marc Zyngier <maz@kernel.org>
---
 arch/arm64/kvm/vgic/vgic-mmio-v3.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/arch/arm64/kvm/vgic/vgic-mmio-v3.c b/arch/arm64/kvm/vgic/vgic-mmio-v3.c
index 0f039d46d4fc..a764b0ab8bf9 100644
--- a/arch/arm64/kvm/vgic/vgic-mmio-v3.c
+++ b/arch/arm64/kvm/vgic/vgic-mmio-v3.c
@@ -833,6 +833,8 @@  static int vgic_register_all_redist_iodevs(struct kvm *kvm)
 	unsigned long c;
 	int ret = 0;
 
+	lockdep_assert_held(&kvm->slots_lock);
+
 	kvm_for_each_vcpu(c, vcpu, kvm) {
 		ret = vgic_register_redist_iodev(vcpu);
 		if (ret)