Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull second set of KVM updates from Paolo Bonzini:
 "ARM:
   - Support for Group0 interrupts in guests
   - Cache management optimizations for ARMv8.4 systems
   - Userspace interface for RAS
   - Fault path optimization
   - Emulated physical timer fixes
   - Random cleanups

  x86:
   - fixes for L1TF
   - a new test case
   - non-support for SGX (inject the right exception in the guest)
   - fix lockdep false positive"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (49 commits)
  KVM: VMX: fixes for vmentry_l1d_flush module parameter
  kvm: selftest: add dirty logging test
  kvm: selftest: pass in extra memory when create vm
  kvm: selftest: include the tools headers
  kvm: selftest: unify the guest port macros
  tools: introduce test_and_clear_bit
  KVM: x86: SVM: Call x86_spec_ctrl_set_guest/host() with interrupts disabled
  KVM: vmx: Inject #UD for SGX ENCLS instruction in guest
  KVM: vmx: Add defines for SGX ENCLS exiting
  x86/kvm/vmx: Fix coding style in vmx_setup_l1d_flush()
  x86: kvm: avoid unused variable warning
  KVM: Documentation: rename the capability of KVM_CAP_ARM_SET_SERROR_ESR
  KVM: arm/arm64: Skip updating PTE entry if no change
  KVM: arm/arm64: Skip updating PMD entry if no change
  KVM: arm: Use true and false for boolean values
  KVM: arm/arm64: vgic: Do not use spin_lock_irqsave/restore with irq disabled
  KVM: arm/arm64: vgic: Move DEBUG_SPINLOCK_BUG_ON to vgic.h
  KVM: arm: vgic-v3: Add support for ICC_SGI0R and ICC_ASGI1R accesses
  KVM: arm64: vgic-v3: Add support for ICC_SGI0R_EL1 and ICC_ASGI1R_EL1 accesses
  KVM: arm/arm64: vgic-v3: Add core support for Group0 SGIs
  ...

1 files changed, 22 insertions, 2 deletions

diff --git a/virt/kvm/arm/vgic/vgic-init.c b/virt/kvm/arm/vgic/vgic-init.c
index 2673efce65f3..c0c0b88af1d5 100644
--- a/virt/kvm/arm/vgic/vgic-init.c
+++ b/virt/kvm/arm/vgic/vgic-init.c
@@ -175,10 +175,13 @@ static int kvm_vgic_dist_init(struct kvm *kvm, unsigned int nr_spis)
 		irq->vcpu = NULL;
 		irq->target_vcpu = vcpu0;
 		kref_init(&irq->refcount);
-		if (dist->vgic_model == KVM_DEV_TYPE_ARM_VGIC_V2)
+		if (dist->vgic_model == KVM_DEV_TYPE_ARM_VGIC_V2) {
 			irq->targets = 0;
-		else
+			irq->group = 0;
+		} else {
 			irq->mpidr = 0;
+			irq->group = 1;
+		}
 	}
 	return 0;
 }
@@ -227,6 +230,18 @@ int kvm_vgic_vcpu_init(struct kvm_vcpu *vcpu)
 			/* PPIs */
 			irq->config = VGIC_CONFIG_LEVEL;
 		}
+
+		/*
+		 * GICv3 can only be created via the KVM_DEVICE_CREATE API and
+		 * so we always know the emulation type at this point as it's
+		 * either explicitly configured as GICv3, or explicitly
+		 * configured as GICv2, or not configured yet which also
+		 * implies GICv2.
+		 */
+		if (dist->vgic_model == KVM_DEV_TYPE_ARM_VGIC_V3)
+			irq->group = 1;
+		else
+			irq->group = 0;
 	}
 
 	if (!irqchip_in_kernel(vcpu->kvm))
@@ -271,6 +286,10 @@ int vgic_init(struct kvm *kvm)
 	if (vgic_initialized(kvm))
 		return 0;
 
+	/* Are we also in the middle of creating a VCPU? */
+	if (kvm->created_vcpus != atomic_read(&kvm->online_vcpus))
+		return -EBUSY;
+
 	/* freeze the number of spis */
 	if (!dist->nr_spis)
 		dist->nr_spis = VGIC_NR_IRQS_LEGACY - VGIC_NR_PRIVATE_IRQS;
@@ -294,6 +313,7 @@ int vgic_init(struct kvm *kvm)
 
 	vgic_debug_init(kvm);
 
+	dist->implementation_rev = 2;
 	dist->initialized = true;
 
 out: