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Update 40_enable_iommu.cfg
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## See the file COPYING for copying conditions.
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## Enables IOMMU to prevent DMA attacks.
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GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX intel_iommu=on amd_iommu=on"
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GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX intel_iommu=on amd_iommu=force_enable iommu=strict iommu.strict=1 iommu.passthrough=0"
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## Disable the busmaster bit on all PCI bridges during very
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## early boot to avoid holes in IOMMU.
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