arm/arm64: KVM: vgic: delay vgic allocation until init time

It is now quite easy to delay the allocation of the vgic tables
until we actually require it to be up and running (when the first
vcpu is kicking around, or someones tries to access the GIC registers).

This allow us to allocate memory for the exact number of CPUs we
have. As nobody configures the number of interrupts just yet,
use a fallback to VGIC_NR_IRQS_LEGACY.

Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>

1 files changed, 0 insertions, 7 deletions

diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c
index c1a11496817b..40bc3df6d87b 100644
--- a/arch/arm/kvm/arm.c
+++ b/arch/arm/kvm/arm.c
@@ -261,16 +261,9 @@ int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu)
 
 int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
 {
-        int ret;
-
         /* Force users to call KVM_ARM_VCPU_INIT */
         vcpu->arch.target = -1;
 
-        /* Set up VGIC */
-        ret = kvm_vgic_vcpu_init(vcpu);
-        if (ret)
-                return ret;
-
         /* Set up the timer */
         kvm_timer_vcpu_init(vcpu);