kernel_optimize_test/virt/kvm/arm/vgic
Shanker Donthineni 0bdbf3b071 KVM: arm/arm64: vgic: Stop injecting the MSI occurrence twice
The IRQFD framework calls the architecture dependent function
twice if the corresponding GSI type is edge triggered. For ARM,
the function kvm_set_msi() is getting called twice whenever the
IRQFD receives the event signal. The rest of the code path is
trying to inject the MSI without any validation checks. No need
to call the function vgic_its_inject_msi() second time to avoid
an unnecessary overhead in IRQ queue logic. It also avoids the
possibility of VM seeing the MSI twice.

Simple fix, return -1 if the argument 'level' value is zero.

Cc: stable@vger.kernel.org
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Christoffer Dall <cdall@linaro.org>
Signed-off-by: Shanker Donthineni <shankerd@codeaurora.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2017-02-08 15:13:14 +00:00
..
vgic-debug.c KVM: arm/arm64: vgic: Add debugfs vgic-state file 2017-01-25 13:50:03 +01:00
vgic-init.c KVM: arm/arm64: vgic: Add debugfs vgic-state file 2017-01-25 13:50:03 +01:00
vgic-irqfd.c KVM: arm/arm64: vgic: Stop injecting the MSI occurrence twice 2017-02-08 15:13:14 +00:00
vgic-its.c KVM: arm/arm64: Remove struct vgic_irq pending field 2017-01-25 13:26:13 +01:00
vgic-kvm-device.c KVM: arm/arm64: vgic: Implement KVM_DEV_ARM_VGIC_GRP_LEVEL_INFO ioctl 2017-01-30 13:47:29 +00:00
vgic-mmio-v2.c KVM: arm/arm64: vgic: Introduce VENG0 and VENG1 fields to vmcr struct 2017-01-30 13:47:21 +00:00
vgic-mmio-v3.c KVM: arm/arm64: vgic: Implement KVM_DEV_ARM_VGIC_GRP_LEVEL_INFO ioctl 2017-01-30 13:47:29 +00:00
vgic-mmio.c KVM: arm/arm64: vgic: Implement KVM_DEV_ARM_VGIC_GRP_LEVEL_INFO ioctl 2017-01-30 13:47:29 +00:00
vgic-mmio.h KVM: arm/arm64: vgic: Implement KVM_DEV_ARM_VGIC_GRP_LEVEL_INFO ioctl 2017-01-30 13:47:29 +00:00
vgic-v2.c KVM: arm/arm64: Remove struct vgic_irq pending field 2017-01-25 13:26:13 +01:00
vgic-v3.c KVM: arm/arm64: vgic: Implement VGICv3 CPU interface access 2017-01-30 13:47:25 +00:00
vgic.c KVM: arm/arm64: Remove kvm_vgic_inject_mapped_irq 2017-02-01 11:56:35 +01:00
vgic.h KVM: arm/arm64: vgic: Implement KVM_DEV_ARM_VGIC_GRP_LEVEL_INFO ioctl 2017-01-30 13:47:29 +00:00