diff options
Diffstat (limited to 'virt/kvm/arm/vgic/vgic.c')
| -rw-r--r-- | virt/kvm/arm/vgic/vgic.c | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/virt/kvm/arm/vgic/vgic.c b/virt/kvm/arm/vgic/vgic.c index e74baec76361..702936cbe173 100644 --- a/virt/kvm/arm/vgic/vgic.c +++ b/virt/kvm/arm/vgic/vgic.c @@ -14,11 +14,13 @@ * along with this program. If not, see <http://www.gnu.org/licenses/>. */ +#include <linux/interrupt.h> +#include <linux/irq.h> #include <linux/kvm.h> #include <linux/kvm_host.h> #include <linux/list_sort.h> -#include <linux/interrupt.h> -#include <linux/irq.h> +#include <linux/nospec.h> + #include <asm/kvm_hyp.h> #include "vgic.h" @@ -101,12 +103,16 @@ struct vgic_irq *vgic_get_irq(struct kvm *kvm, struct kvm_vcpu *vcpu, u32 intid) { /* SGIs and PPIs */ - if (intid <= VGIC_MAX_PRIVATE) + if (intid <= VGIC_MAX_PRIVATE) { + intid = array_index_nospec(intid, VGIC_MAX_PRIVATE); return &vcpu->arch.vgic_cpu.private_irqs[intid]; + } /* SPIs */ - if (intid <= VGIC_MAX_SPI) + if (intid <= VGIC_MAX_SPI) { + intid = array_index_nospec(intid, VGIC_MAX_SPI); return &kvm->arch.vgic.spis[intid - VGIC_NR_PRIVATE_IRQS]; + } /* LPIs */ if (intid >= VGIC_MIN_LPI) @@ -594,6 +600,7 @@ retry: list_for_each_entry_safe(irq, tmp, &vgic_cpu->ap_list_head, ap_list) { struct kvm_vcpu *target_vcpu, *vcpuA, *vcpuB; + bool target_vcpu_needs_kick = false; spin_lock(&irq->irq_lock); @@ -664,11 +671,18 @@ retry: list_del(&irq->ap_list); irq->vcpu = target_vcpu; list_add_tail(&irq->ap_list, &new_cpu->ap_list_head); + target_vcpu_needs_kick = true; } spin_unlock(&irq->irq_lock); spin_unlock(&vcpuB->arch.vgic_cpu.ap_list_lock); spin_unlock_irqrestore(&vcpuA->arch.vgic_cpu.ap_list_lock, flags); + + if (target_vcpu_needs_kick) { + kvm_make_request(KVM_REQ_IRQ_PENDING, target_vcpu); + kvm_vcpu_kick(target_vcpu); + } + goto retry; } |