[PATCH 04/12] x86: Lock down IO port access when trusted_kernel is true

IO port access would permit users to gain access to PCI configuration registers, which in turn (on a lot of hardware) give access to MMIO register space. This would potentially permit root to trigger arbitrary DMA, so lock it down when trusted_kernel is true Signed-off-by: Matthew Garrett --- ar

[PATCH 04/12] x86: Lock down IO port access when trusted_kernel is true

IO port access would permit users to gain access to PCI configuration registers, which in turn (on a lot of hardware) give access to MMIO register space. This would potentially permit root to trigger arbitrary DMA, so lock it down when trusted_kernel is true Signed-off-by: Matthew Garrett --- ar