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Subject[PATCH v4 09/13] KVM: arm/arm64: vgic: support irqfd injection of a mapped IRQ
Date
Up to now irqfd injection was only possible for unmapped IRQ. This
patch adds support for injecting mapped interrupts.

Signed-off-by: Eric Auger <eric.auger@linaro.org>
---
virt/kvm/arm/vgic.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c
index dba8eb6..e96f79e 100644
--- a/virt/kvm/arm/vgic.c
+++ b/virt/kvm/arm/vgic.c
@@ -2476,13 +2476,21 @@ int kvm_irq_map_chip_pin(struct kvm *kvm, unsigned irqchip, unsigned pin)
int kvm_set_irq(struct kvm *kvm, int irq_source_id,
u32 irq, int level, bool line_status)
{
+ struct vgic_dist *dist = &kvm->arch.vgic;
unsigned int spi = irq + VGIC_NR_PRIVATE_IRQS;
+ struct irq_phys_map *map;
+ int vcpu_id;

trace_kvm_set_irq(irq, level, irq_source_id);

BUG_ON(!vgic_initialized(kvm));

- return kvm_vgic_inject_irq(kvm, 0, spi, level);
+ vcpu_id = dist->irq_spi_cpu[irq];
+ map = vgic_irq_map_search(kvm_get_vcpu(kvm, vcpu_id), spi);
+ if (!map)
+ return kvm_vgic_inject_irq(kvm, vcpu_id, spi, level);
+ else
+ return kvm_vgic_inject_mapped_irq(kvm, vcpu_id, map, level);
}

/* MSI not implemented yet */
--
1.9.1


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