arm/arm64: KVM: vgic: kick the specific vcpu instead of iterating through all

arm/arm64: KVM: vgic: kick the specific vcpu instead of iterating through all

commit 016ed39c54b8a3db680e5c6a43419f806133caf2 upstream.

When call kvm_vgic_inject_irq to inject interrupt, we can known which
vcpu the interrupt for by the irq_num and the cpuid. So we should just
kick this vcpu to avoid iterating through all.

Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Shannon Zhao <zhaoshenglong@huawei.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>