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-rw-r--r--virt/kvm/arm/hyp/vgic-v2-sr.c3
-rw-r--r--virt/kvm/arm/hyp/vgic-v3-sr.c14
-rw-r--r--virt/kvm/arm/vgic/vgic-init.c12
-rw-r--r--virt/kvm/arm/vgic/vgic-v2.c24
-rw-r--r--virt/kvm/arm/vgic/vgic-v3.c22
-rw-r--r--virt/kvm/arm/vgic/vgic.c22
-rw-r--r--virt/kvm/arm/vgic/vgic.h6
7 files changed, 92 insertions, 11 deletions
diff --git a/virt/kvm/arm/hyp/vgic-v2-sr.c b/virt/kvm/arm/hyp/vgic-v2-sr.c
index c8aeb7b91ec8..d3d3b9b0c2c3 100644
--- a/virt/kvm/arm/hyp/vgic-v2-sr.c
+++ b/virt/kvm/arm/hyp/vgic-v2-sr.c
@@ -114,8 +114,6 @@ void __hyp_text __vgic_v2_save_state(struct kvm_vcpu *vcpu)
if (!base)
return;
- cpu_if->vgic_vmcr = readl_relaxed(base + GICH_VMCR);
-
if (vcpu->arch.vgic_cpu.live_lrs) {
cpu_if->vgic_apr = readl_relaxed(base + GICH_APR);
@@ -165,7 +163,6 @@ void __hyp_text __vgic_v2_restore_state(struct kvm_vcpu *vcpu)
}
}
- writel_relaxed(cpu_if->vgic_vmcr, base + GICH_VMCR);
vcpu->arch.vgic_cpu.live_lrs = live_lrs;
}
diff --git a/virt/kvm/arm/hyp/vgic-v3-sr.c b/virt/kvm/arm/hyp/vgic-v3-sr.c
index 3947095cc0a1..e51ee7edf953 100644
--- a/virt/kvm/arm/hyp/vgic-v3-sr.c
+++ b/virt/kvm/arm/hyp/vgic-v3-sr.c
@@ -159,8 +159,6 @@ void __hyp_text __vgic_v3_save_state(struct kvm_vcpu *vcpu)
if (!cpu_if->vgic_sre)
dsb(st);
- cpu_if->vgic_vmcr = read_gicreg(ICH_VMCR_EL2);
-
if (vcpu->arch.vgic_cpu.live_lrs) {
int i;
u32 max_lr_idx, nr_pri_bits;
@@ -261,8 +259,6 @@ void __hyp_text __vgic_v3_restore_state(struct kvm_vcpu *vcpu)
live_lrs |= (1 << i);
}
- write_gicreg(cpu_if->vgic_vmcr, ICH_VMCR_EL2);
-
if (live_lrs) {
write_gicreg(cpu_if->vgic_hcr, ICH_HCR_EL2);
@@ -326,3 +322,13 @@ u64 __hyp_text __vgic_v3_get_ich_vtr_el2(void)
{
return read_gicreg(ICH_VTR_EL2);
}
+
+u64 __hyp_text __vgic_v3_read_vmcr(void)
+{
+ return read_gicreg(ICH_VMCR_EL2);
+}
+
+void __hyp_text __vgic_v3_write_vmcr(u32 vmcr)
+{
+ write_gicreg(vmcr, ICH_VMCR_EL2);
+}
diff --git a/virt/kvm/arm/vgic/vgic-init.c b/virt/kvm/arm/vgic/vgic-init.c
index 276139a24e6f..e8e973b72ca5 100644
--- a/virt/kvm/arm/vgic/vgic-init.c
+++ b/virt/kvm/arm/vgic/vgic-init.c
@@ -262,6 +262,18 @@ int vgic_init(struct kvm *kvm)
vgic_debug_init(kvm);
dist->initialized = true;
+
+ /*
+ * If we're initializing GICv2 on-demand when first running the VCPU
+ * then we need to load the VGIC state onto the CPU. We can detect
+ * this easily by checking if we are in between vcpu_load and vcpu_put
+ * when we just initialized the VGIC.
+ */
+ preempt_disable();
+ vcpu = kvm_arm_get_running_vcpu();
+ if (vcpu)
+ kvm_vgic_load(vcpu);
+ preempt_enable();
out:
return ret;
}
diff --git a/virt/kvm/arm/vgic/vgic-v2.c b/virt/kvm/arm/vgic/vgic-v2.c
index b834ecdf3225..2f241e026c8f 100644
--- a/virt/kvm/arm/vgic/vgic-v2.c
+++ b/virt/kvm/arm/vgic/vgic-v2.c
@@ -184,6 +184,7 @@ void vgic_v2_clear_lr(struct kvm_vcpu *vcpu, int lr)
void vgic_v2_set_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcrp)
{
+ struct vgic_v2_cpu_if *cpu_if = &vcpu->arch.vgic_cpu.vgic_v2;
u32 vmcr;
vmcr = (vmcrp->ctlr << GICH_VMCR_CTRL_SHIFT) & GICH_VMCR_CTRL_MASK;
@@ -194,12 +195,15 @@ void vgic_v2_set_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcrp)
vmcr |= (vmcrp->pmr << GICH_VMCR_PRIMASK_SHIFT) &
GICH_VMCR_PRIMASK_MASK;
- vcpu->arch.vgic_cpu.vgic_v2.vgic_vmcr = vmcr;
+ cpu_if->vgic_vmcr = vmcr;
}
void vgic_v2_get_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcrp)
{
- u32 vmcr = vcpu->arch.vgic_cpu.vgic_v2.vgic_vmcr;
+ struct vgic_v2_cpu_if *cpu_if = &vcpu->arch.vgic_cpu.vgic_v2;
+ u32 vmcr;
+
+ vmcr = cpu_if->vgic_vmcr;
vmcrp->ctlr = (vmcr & GICH_VMCR_CTRL_MASK) >>
GICH_VMCR_CTRL_SHIFT;
@@ -375,3 +379,19 @@ out:
return ret;
}
+
+void vgic_v2_load(struct kvm_vcpu *vcpu)
+{
+ struct vgic_v2_cpu_if *cpu_if = &vcpu->arch.vgic_cpu.vgic_v2;
+ struct vgic_dist *vgic = &vcpu->kvm->arch.vgic;
+
+ writel_relaxed(cpu_if->vgic_vmcr, vgic->vctrl_base + GICH_VMCR);
+}
+
+void vgic_v2_put(struct kvm_vcpu *vcpu)
+{
+ struct vgic_v2_cpu_if *cpu_if = &vcpu->arch.vgic_cpu.vgic_v2;
+ struct vgic_dist *vgic = &vcpu->kvm->arch.vgic;
+
+ cpu_if->vgic_vmcr = readl_relaxed(vgic->vctrl_base + GICH_VMCR);
+}
diff --git a/virt/kvm/arm/vgic/vgic-v3.c b/virt/kvm/arm/vgic/vgic-v3.c
index be0f4c3e0142..99213d744e4f 100644
--- a/virt/kvm/arm/vgic/vgic-v3.c
+++ b/virt/kvm/arm/vgic/vgic-v3.c
@@ -173,6 +173,7 @@ void vgic_v3_clear_lr(struct kvm_vcpu *vcpu, int lr)
void vgic_v3_set_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcrp)
{
+ struct vgic_v3_cpu_if *cpu_if = &vcpu->arch.vgic_cpu.vgic_v3;
u32 vmcr;
/*
@@ -188,12 +189,15 @@ void vgic_v3_set_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcrp)
vmcr |= (vmcrp->grpen0 << ICH_VMCR_ENG0_SHIFT) & ICH_VMCR_ENG0_MASK;
vmcr |= (vmcrp->grpen1 << ICH_VMCR_ENG1_SHIFT) & ICH_VMCR_ENG1_MASK;
- vcpu->arch.vgic_cpu.vgic_v3.vgic_vmcr = vmcr;
+ cpu_if->vgic_vmcr = vmcr;
}
void vgic_v3_get_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcrp)
{
- u32 vmcr = vcpu->arch.vgic_cpu.vgic_v3.vgic_vmcr;
+ struct vgic_v3_cpu_if *cpu_if = &vcpu->arch.vgic_cpu.vgic_v3;
+ u32 vmcr;
+
+ vmcr = cpu_if->vgic_vmcr;
/*
* Ignore the FIQen bit, because GIC emulation always implies
@@ -386,3 +390,17 @@ int vgic_v3_probe(const struct gic_kvm_info *info)
return 0;
}
+
+void vgic_v3_load(struct kvm_vcpu *vcpu)
+{
+ struct vgic_v3_cpu_if *cpu_if = &vcpu->arch.vgic_cpu.vgic_v3;
+
+ kvm_call_hyp(__vgic_v3_write_vmcr, cpu_if->vgic_vmcr);
+}
+
+void vgic_v3_put(struct kvm_vcpu *vcpu)
+{
+ struct vgic_v3_cpu_if *cpu_if = &vcpu->arch.vgic_cpu.vgic_v3;
+
+ cpu_if->vgic_vmcr = kvm_call_hyp(__vgic_v3_read_vmcr);
+}
diff --git a/virt/kvm/arm/vgic/vgic.c b/virt/kvm/arm/vgic/vgic.c
index 654dfd40e449..2ac0def57424 100644
--- a/virt/kvm/arm/vgic/vgic.c
+++ b/virt/kvm/arm/vgic/vgic.c
@@ -656,6 +656,28 @@ void kvm_vgic_flush_hwstate(struct kvm_vcpu *vcpu)
spin_unlock(&vcpu->arch.vgic_cpu.ap_list_lock);
}
+void kvm_vgic_load(struct kvm_vcpu *vcpu)
+{
+ if (unlikely(!vgic_initialized(vcpu->kvm)))
+ return;
+
+ if (kvm_vgic_global_state.type == VGIC_V2)
+ vgic_v2_load(vcpu);
+ else
+ vgic_v3_load(vcpu);
+}
+
+void kvm_vgic_put(struct kvm_vcpu *vcpu)
+{
+ if (unlikely(!vgic_initialized(vcpu->kvm)))
+ return;
+
+ if (kvm_vgic_global_state.type == VGIC_V2)
+ vgic_v2_put(vcpu);
+ else
+ vgic_v3_put(vcpu);
+}
+
int kvm_vgic_vcpu_pending_irq(struct kvm_vcpu *vcpu)
{
struct vgic_cpu *vgic_cpu = &vcpu->arch.vgic_cpu;
diff --git a/virt/kvm/arm/vgic/vgic.h b/virt/kvm/arm/vgic/vgic.h
index db28f7cadab2..9afb4557c7e8 100644
--- a/virt/kvm/arm/vgic/vgic.h
+++ b/virt/kvm/arm/vgic/vgic.h
@@ -130,6 +130,9 @@ int vgic_v2_map_resources(struct kvm *kvm);
int vgic_register_dist_iodev(struct kvm *kvm, gpa_t dist_base_address,
enum vgic_type);
+void vgic_v2_load(struct kvm_vcpu *vcpu);
+void vgic_v2_put(struct kvm_vcpu *vcpu);
+
static inline void vgic_get_irq_kref(struct vgic_irq *irq)
{
if (irq->intid < VGIC_MIN_LPI)
@@ -150,6 +153,9 @@ int vgic_v3_probe(const struct gic_kvm_info *info);
int vgic_v3_map_resources(struct kvm *kvm);
int vgic_register_redist_iodevs(struct kvm *kvm, gpa_t dist_base_address);
+void vgic_v3_load(struct kvm_vcpu *vcpu);
+void vgic_v3_put(struct kvm_vcpu *vcpu);
+
int vgic_register_its_iodevs(struct kvm *kvm);
bool vgic_has_its(struct kvm *kvm);
int kvm_vgic_register_its_device(void);
generated by cgit (git 2.34.1) at 2024-06-11 20:54:37 +0000