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| author | Marc Zyngier <marc.zyngier@arm.com> | 2018-12-04 17:11:19 +0000 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2018-12-18 15:14:50 +0000 |
| commit | bea2ef803ade3359026d5d357348842bca9edcf1 (patch) | |
| tree | 3d3f92151225bcbc4bc1d5c4805541d1880f9ea5 /virt | |
| parent | 6992195cc6c6c4d673a3266ae59cbeeb746d61af (diff) | |
| download | lwn-bea2ef803ade3359026d5d357348842bca9edcf1.tar.gz lwn-bea2ef803ade3359026d5d357348842bca9edcf1.zip | |
KVM: arm/arm64: vgic: Cap SPIs to the VM-defined maximum
SPIs should be checked against the VMs specific configuration, and
not the architectural maximum.
Cc: stable@vger.kernel.org
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'virt')
| -rw-r--r-- | virt/kvm/arm/vgic/vgic.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/virt/kvm/arm/vgic/vgic.c b/virt/kvm/arm/vgic/vgic.c index 7cfdfbc910e0..8ab0491bcc94 100644 --- a/virt/kvm/arm/vgic/vgic.c +++ b/virt/kvm/arm/vgic/vgic.c @@ -108,8 +108,8 @@ struct vgic_irq *vgic_get_irq(struct kvm *kvm, struct kvm_vcpu *vcpu, } /* SPIs */ - if (intid <= VGIC_MAX_SPI) { - intid = array_index_nospec(intid, VGIC_MAX_SPI); + if (intid < (kvm->arch.vgic.nr_spis + VGIC_NR_PRIVATE_IRQS)) { + intid = array_index_nospec(intid, kvm->arch.vgic.nr_spis + VGIC_NR_PRIVATE_IRQS); return &kvm->arch.vgic.spis[intid - VGIC_NR_PRIVATE_IRQS]; } |