summaryrefslogtreecommitdiff
path: root/virt
diff options
context:
space:
mode:
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/arm/vgic-v2.c8
-rw-r--r--virt/kvm/arm/vgic-v3.c8
-rw-r--r--virt/kvm/arm/vgic.c22
-rw-r--r--virt/kvm/kvm_main.c15
4 files changed, 44 insertions, 9 deletions
diff --git a/virt/kvm/arm/vgic-v2.c b/virt/kvm/arm/vgic-v2.c
index a0a7b5d..f9b9c7c 100644
--- a/virt/kvm/arm/vgic-v2.c
+++ b/virt/kvm/arm/vgic-v2.c
@@ -72,6 +72,8 @@ static void vgic_v2_sync_lr_elrsr(struct kvm_vcpu *vcpu, int lr,
{
if (!(lr_desc.state & LR_STATE_MASK))
vcpu->arch.vgic_cpu.vgic_v2.vgic_elrsr |= (1ULL << lr);
+ else
+ vcpu->arch.vgic_cpu.vgic_v2.vgic_elrsr &= ~(1ULL << lr);
}
static u64 vgic_v2_get_elrsr(const struct kvm_vcpu *vcpu)
@@ -84,6 +86,11 @@ static u64 vgic_v2_get_eisr(const struct kvm_vcpu *vcpu)
return vcpu->arch.vgic_cpu.vgic_v2.vgic_eisr;
}
+static void vgic_v2_clear_eisr(struct kvm_vcpu *vcpu)
+{
+ vcpu->arch.vgic_cpu.vgic_v2.vgic_eisr = 0;
+}
+
static u32 vgic_v2_get_interrupt_status(const struct kvm_vcpu *vcpu)
{
u32 misr = vcpu->arch.vgic_cpu.vgic_v2.vgic_misr;
@@ -148,6 +155,7 @@ static const struct vgic_ops vgic_v2_ops = {
.sync_lr_elrsr = vgic_v2_sync_lr_elrsr,
.get_elrsr = vgic_v2_get_elrsr,
.get_eisr = vgic_v2_get_eisr,
+ .clear_eisr = vgic_v2_clear_eisr,
.get_interrupt_status = vgic_v2_get_interrupt_status,
.enable_underflow = vgic_v2_enable_underflow,
.disable_underflow = vgic_v2_disable_underflow,
diff --git a/virt/kvm/arm/vgic-v3.c b/virt/kvm/arm/vgic-v3.c
index 3a62d8a..dff0602 100644
--- a/virt/kvm/arm/vgic-v3.c
+++ b/virt/kvm/arm/vgic-v3.c
@@ -104,6 +104,8 @@ static void vgic_v3_sync_lr_elrsr(struct kvm_vcpu *vcpu, int lr,
{
if (!(lr_desc.state & LR_STATE_MASK))
vcpu->arch.vgic_cpu.vgic_v3.vgic_elrsr |= (1U << lr);
+ else
+ vcpu->arch.vgic_cpu.vgic_v3.vgic_elrsr &= ~(1U << lr);
}
static u64 vgic_v3_get_elrsr(const struct kvm_vcpu *vcpu)
@@ -116,6 +118,11 @@ static u64 vgic_v3_get_eisr(const struct kvm_vcpu *vcpu)
return vcpu->arch.vgic_cpu.vgic_v3.vgic_eisr;
}
+static void vgic_v3_clear_eisr(struct kvm_vcpu *vcpu)
+{
+ vcpu->arch.vgic_cpu.vgic_v3.vgic_eisr = 0;
+}
+
static u32 vgic_v3_get_interrupt_status(const struct kvm_vcpu *vcpu)
{
u32 misr = vcpu->arch.vgic_cpu.vgic_v3.vgic_misr;
@@ -192,6 +199,7 @@ static const struct vgic_ops vgic_v3_ops = {
.sync_lr_elrsr = vgic_v3_sync_lr_elrsr,
.get_elrsr = vgic_v3_get_elrsr,
.get_eisr = vgic_v3_get_eisr,
+ .clear_eisr = vgic_v3_clear_eisr,
.get_interrupt_status = vgic_v3_get_interrupt_status,
.enable_underflow = vgic_v3_enable_underflow,
.disable_underflow = vgic_v3_disable_underflow,
diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c
index 0cc6ab6..c9f60f5 100644
--- a/virt/kvm/arm/vgic.c
+++ b/virt/kvm/arm/vgic.c
@@ -883,6 +883,11 @@ static inline u64 vgic_get_eisr(struct kvm_vcpu *vcpu)
return vgic_ops->get_eisr(vcpu);
}
+static inline void vgic_clear_eisr(struct kvm_vcpu *vcpu)
+{
+ vgic_ops->clear_eisr(vcpu);
+}
+
static inline u32 vgic_get_interrupt_status(struct kvm_vcpu *vcpu)
{
return vgic_ops->get_interrupt_status(vcpu);
@@ -922,6 +927,7 @@ static void vgic_retire_lr(int lr_nr, int irq, struct kvm_vcpu *vcpu)
vgic_set_lr(vcpu, lr_nr, vlr);
clear_bit(lr_nr, vgic_cpu->lr_used);
vgic_cpu->vgic_irq_lr_map[irq] = LR_EMPTY;
+ vgic_sync_lr_elrsr(vcpu, lr_nr, vlr);
}
/*
@@ -978,6 +984,7 @@ bool vgic_queue_irq(struct kvm_vcpu *vcpu, u8 sgi_source_id, int irq)
BUG_ON(!test_bit(lr, vgic_cpu->lr_used));
vlr.state |= LR_STATE_PENDING;
vgic_set_lr(vcpu, lr, vlr);
+ vgic_sync_lr_elrsr(vcpu, lr, vlr);
return true;
}
}
@@ -999,6 +1006,7 @@ bool vgic_queue_irq(struct kvm_vcpu *vcpu, u8 sgi_source_id, int irq)
vlr.state |= LR_EOI_INT;
vgic_set_lr(vcpu, lr, vlr);
+ vgic_sync_lr_elrsr(vcpu, lr, vlr);
return true;
}
@@ -1136,6 +1144,14 @@ static bool vgic_process_maintenance(struct kvm_vcpu *vcpu)
if (status & INT_STATUS_UNDERFLOW)
vgic_disable_underflow(vcpu);
+ /*
+ * In the next iterations of the vcpu loop, if we sync the vgic state
+ * after flushing it, but before entering the guest (this happens for
+ * pending signals and vmid rollovers), then make sure we don't pick
+ * up any old maintenance interrupts here.
+ */
+ vgic_clear_eisr(vcpu);
+
return level_pending;
}
@@ -1583,8 +1599,10 @@ int kvm_vgic_create(struct kvm *kvm, u32 type)
* emulation. So check this here again. KVM_CREATE_DEVICE does
* the proper checks already.
*/
- if (type == KVM_DEV_TYPE_ARM_VGIC_V2 && !vgic->can_emulate_gicv2)
- return -ENODEV;
+ if (type == KVM_DEV_TYPE_ARM_VGIC_V2 && !vgic->can_emulate_gicv2) {
+ ret = -ENODEV;
+ goto out;
+ }
/*
* Any time a vcpu is run, vcpu_load is called which tries to grab the
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index a109370..cc6a25d 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -471,7 +471,7 @@ static struct kvm *kvm_create_vm(unsigned long type)
BUILD_BUG_ON(KVM_MEM_SLOTS_NUM > SHRT_MAX);
r = -ENOMEM;
- kvm->memslots = kzalloc(sizeof(struct kvm_memslots), GFP_KERNEL);
+ kvm->memslots = kvm_kvzalloc(sizeof(struct kvm_memslots));
if (!kvm->memslots)
goto out_err_no_srcu;
@@ -522,7 +522,7 @@ out_err_no_srcu:
out_err_no_disable:
for (i = 0; i < KVM_NR_BUSES; i++)
kfree(kvm->buses[i]);
- kfree(kvm->memslots);
+ kvfree(kvm->memslots);
kvm_arch_free_vm(kvm);
return ERR_PTR(r);
}
@@ -578,7 +578,7 @@ static void kvm_free_physmem(struct kvm *kvm)
kvm_for_each_memslot(memslot, slots)
kvm_free_physmem_slot(kvm, memslot, NULL);
- kfree(kvm->memslots);
+ kvfree(kvm->memslots);
}
static void kvm_destroy_devices(struct kvm *kvm)
@@ -871,10 +871,10 @@ int __kvm_set_memory_region(struct kvm *kvm,
goto out_free;
}
- slots = kmemdup(kvm->memslots, sizeof(struct kvm_memslots),
- GFP_KERNEL);
+ slots = kvm_kvzalloc(sizeof(struct kvm_memslots));
if (!slots)
goto out_free;
+ memcpy(slots, kvm->memslots, sizeof(struct kvm_memslots));
if ((change == KVM_MR_DELETE) || (change == KVM_MR_MOVE)) {
slot = id_to_memslot(slots, mem->slot);
@@ -917,7 +917,7 @@ int __kvm_set_memory_region(struct kvm *kvm,
kvm_arch_commit_memory_region(kvm, mem, &old, change);
kvm_free_physmem_slot(kvm, &old, &new);
- kfree(old_memslots);
+ kvfree(old_memslots);
/*
* IOMMU mapping: New slots need to be mapped. Old slots need to be
@@ -936,7 +936,7 @@ int __kvm_set_memory_region(struct kvm *kvm,
return 0;
out_slots:
- kfree(slots);
+ kvfree(slots);
out_free:
kvm_free_physmem_slot(kvm, &new, &old);
out:
@@ -2492,6 +2492,7 @@ static long kvm_vm_ioctl_check_extension_generic(struct kvm *kvm, long arg)
case KVM_CAP_SIGNAL_MSI:
#endif
#ifdef CONFIG_HAVE_KVM_IRQFD
+ case KVM_CAP_IRQFD:
case KVM_CAP_IRQFD_RESAMPLE:
#endif
case KVM_CAP_CHECK_EXTENSION_VM:
generated by cgit v0.10.2 at 2024-08-30 05:44:13 (GMT)