path: root/virt
diff options
authorChristoffer Dall <christoffer.dall@linaro.org>2014-12-09 14:30:36 +0100
committerChristoffer Dall <christoffer.dall@linaro.org>2014-12-13 14:17:10 +0100
commit1f57be289571d514b9412da2af25a64a81b8dd89 (patch)
treeb851906151ac595f69d762d87b116a7bba781a23 /virt
parentc52edf5f8caff878afc93c1b1e9a3d9490a9932f (diff)
arm/arm64: KVM: Add (new) vgic_initialized macro
Some code paths will need to check to see if the internal state of the vgic has been initialized (such as when creating new VCPUs), so introduce such a macro that checks the nr_cpus field which is set when the vgic has been initialized. Also set nr_cpus = 0 in kvm_vgic_destroy, because the error path in vgic_init() will call this function, and code should never errornously assume the vgic to be properly initialized after an error. Acked-by: Marc Zyngier <marc.zyngier@arm.com> Reviewed-by: Eric Auger <eric.auger@linaro.org> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'virt')
1 files changed, 2 insertions, 1 deletions
diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c
index 4edb2572ea9..d862ea50216 100644
--- a/virt/kvm/arm/vgic.c
+++ b/virt/kvm/arm/vgic.c
@@ -1780,6 +1780,7 @@ void kvm_vgic_destroy(struct kvm *kvm)
dist->irq_spi_cpu = NULL;
dist->irq_spi_target = NULL;
dist->irq_pending_on_cpu = NULL;
+ dist->nr_cpus = 0;
@@ -1793,7 +1794,7 @@ static int vgic_init(struct kvm *kvm)
int nr_cpus, nr_irqs;
int ret, i, vcpu_id;
- if (dist->nr_cpus) /* Already allocated */
+ if (vgic_initialized(kvm))
return 0;
nr_cpus = dist->nr_cpus = atomic_read(&kvm->online_vcpus);