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Avoid holes in IOMMU

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madaidan 2020-02-14 18:52:01 +00:00 committed by GitHub
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7
etc/default/grub.d/40_enable_iommu.cfg
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@ -3,3 +3,10 @@
## Enables IOMMU to prevent DMA attacks.
GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX intel_iommu=on amd_iommu=on"
## Disable the busmaster bit on all PCI bridges during very
## early boot to avoid holes in IOMMU.
##
## https://mjg59.dreamwidth.org/54433.html
## https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4444f8541dad16fefd9b8807ad1451e806ef1d94
GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX efi=disable_early_pci_dma"