KVM: arm/arm64: vgic: Prevent userspace injection of a mapped interrupt

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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>

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This commit is contained in:

Marc Zyngier 2015-07-24 11:30:43 +01:00

parent 6e84e0e067

commit 773299a570

2 changed files with 72 additions and 33 deletions

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include/kvm/arm_vgic.h

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