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| author | Marc Zyngier <marc.zyngier@arm.com> | 2015-07-24 11:30:43 +0100 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2015-08-12 11:28:26 +0100 |
| commit | 773299a570725d1f253d6046cd6475209b0dcd55 (patch) | |
| tree | a9d54841a4a92de76dad049bea4db351e7d35f5a /include | |
| parent | 6e84e0e0677281b4e7fc634c7e9d085fbcf41b10 (diff) | |
| download | linux-773299a570725d1f253d6046cd6475209b0dcd55.tar.gz linux-773299a570725d1f253d6046cd6475209b0dcd55.tar.bz2 linux-773299a570725d1f253d6046cd6475209b0dcd55.zip | |
KVM: arm/arm64: vgic: Prevent userspace injection of a mapped interrupt
Virtual interrupts mapped to a HW interrupt should only be triggered
from inside the kernel. Otherwise, you could end up confusing the
kernel (and the GIC's) state machine.
Rearrange the injection path so that kvm_vgic_inject_irq is
used for non-mapped interrupts, and kvm_vgic_inject_mapped_irq is
used for mapped interrupts. The latter should only be called from
inside the kernel (timer, irqfd).
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/kvm/arm_vgic.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/kvm/arm_vgic.h b/include/kvm/arm_vgic.h index e789e4721139..d901f1a47be6 100644 --- a/include/kvm/arm_vgic.h +++ b/include/kvm/arm_vgic.h @@ -350,6 +350,8 @@ void kvm_vgic_flush_hwstate(struct kvm_vcpu *vcpu); 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); void vgic_v3_dispatch_sgi(struct kvm_vcpu *vcpu, u64 reg); int kvm_vgic_vcpu_pending_irq(struct kvm_vcpu *vcpu); int kvm_vgic_vcpu_active_irq(struct kvm_vcpu *vcpu); |