KVM: arm64: vgic-v2: Check cpu interface region is not above the VM IPA size

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Verify that the GICv2 CPU interface does not extend beyond the
VM-specified IPA range (phys_size).

  base + size > phys_size AND base < phys_size

Add the missing check into kvm_vgic_addr() which is called when setting
the region. This patch also enables some superfluous checks for the
distributor (vgic_check_ioaddr was enough as alignment == size for the
distributors).

Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Ricardo Koller <ricarkol@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211005011921.437353-4-ricarkol@google.com

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Ricardo Koller 2021-10-04 18:19:13 -07:00 • committed by Marc Zyngier

parent 4612d98f58

commit c56a87da0a

1 changed files with 5 additions and 2 deletions

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arch/arm64/kvm/vgic/vgic-kvm-device.c

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