From: Andre Przywara <andre.przywara@arm.com>
Date: Wed, 13 Apr 2016 08:48:02 +0000 (+0100)
Subject: KVM: arm/arm64: vgic: avoid map in kvm_vgic_inject_mapped_irq()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=4f551a3d96a2de85a041ee60e806bda1d5b06255;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

KVM: arm/arm64: vgic: avoid map in kvm_vgic_inject_mapped_irq()

When we want to inject a hardware mapped IRQ into a guest, we actually
only need the virtual IRQ number from the irq_phys_map.
So let's pass this number directly from the arch timer to the VGIC
to avoid using the map as a parameter.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Eric Auger <eric.auger@linaro.org>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
---

diff --git a/include/kvm/arm_vgic.h b/include/kvm/arm_vgic.h
index be6037aa703d..e22f01507e2b 100644
--- a/include/kvm/arm_vgic.h
+++ b/include/kvm/arm_vgic.h
@@ -342,7 +342,7 @@ void kvm_vgic_sync_hwstate(struct kvm_vcpu *vcpu);
 int kvm_vgic_inject_irq(struct kvm *kvm, int cpuid, unsigned int irq_num,
 			bool level);
 int kvm_vgic_inject_mapped_irq(struct kvm *kvm, int cpuid,
-			       struct irq_phys_map *map, bool level);
+			       unsigned int virt_irq, bool level);
 void vgic_v3_dispatch_sgi(struct kvm_vcpu *vcpu, u64 reg);
 int kvm_vgic_vcpu_pending_irq(struct kvm_vcpu *vcpu);
 struct irq_phys_map *kvm_vgic_map_phys_irq(struct kvm_vcpu *vcpu,
diff --git a/virt/kvm/arm/arch_timer.c b/virt/kvm/arm/arch_timer.c
index 409db3304471..a9c6c1c59d38 100644
--- a/virt/kvm/arm/arch_timer.c
+++ b/virt/kvm/arm/arch_timer.c
@@ -177,7 +177,7 @@ static void kvm_timer_update_irq(struct kvm_vcpu *vcpu, bool new_level)
 	trace_kvm_timer_update_irq(vcpu->vcpu_id, timer->map->virt_irq,
 				   timer->irq.level);
 	ret = kvm_vgic_inject_mapped_irq(vcpu->kvm, vcpu->vcpu_id,
-					 timer->map,
+					 timer->map->virt_irq,
 					 timer->irq.level);
 	WARN_ON(ret);
 }
diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c
index f6c61720763d..81c557c0c3fd 100644
--- a/virt/kvm/arm/vgic.c
+++ b/virt/kvm/arm/vgic.c
@@ -1666,7 +1666,7 @@ int kvm_vgic_inject_irq(struct kvm *kvm, int cpuid, unsigned int irq_num,
  * kvm_vgic_inject_mapped_irq - Inject a physically mapped IRQ to the vgic
  * @kvm:     The VM structure pointer
  * @cpuid:   The CPU for PPIs
- * @map:     Pointer to a irq_phys_map structure describing the mapping
+ * @virt_irq: The virtual IRQ to be injected
  * @level:   Edge-triggered:  true:  to trigger the interrupt
  *			      false: to ignore the call
  *	     Level-sensitive  true:  raise the input signal
@@ -1677,7 +1677,7 @@ int kvm_vgic_inject_irq(struct kvm *kvm, int cpuid, unsigned int irq_num,
  * being HIGH and 0 being LOW and all devices being active-HIGH.
  */
 int kvm_vgic_inject_mapped_irq(struct kvm *kvm, int cpuid,
-			       struct irq_phys_map *map, bool level)
+			       unsigned int virt_irq, bool level)
 {
 	int ret;
 
@@ -1685,7 +1685,7 @@ int kvm_vgic_inject_mapped_irq(struct kvm *kvm, int cpuid,
 	if (ret)
 		return ret;
 
-	return vgic_update_irq_pending(kvm, cpuid, map->virt_irq, level);
+	return vgic_update_irq_pending(kvm, cpuid, virt_irq, level);
 }
 
 static irqreturn_t vgic_maintenance_handler(int irq, void *data)