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Merge pull request #176 from monsieuremre/patch-1

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Iommu Kernel Parameters
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Patrick Schleizer 2023-12-04 11:00:29 -05:00 committed by GitHub
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1 changed files with 2 additions and 2 deletions
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etc/default/grub.d/40_enable_iommu.cfg
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@ -2,7 +2,7 @@
## See the file COPYING for copying conditions.
## Enables IOMMU to prevent DMA attacks.
GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX intel_iommu=on amd_iommu=on"
GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX intel_iommu=on amd_iommu=force_enable"
## Disable the busmaster bit on all PCI bridges during very
## early boot to avoid holes in IOMMU.
@ -14,4 +14,4 @@ GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX efi=disable_early_pci_dma"
## Enables strict enforcement of IOMMU TLB invalidation so devices will never be able to access stale data contents
## https://github.com/torvalds/linux/blob/master/drivers/iommu/Kconfig#L97
## Page 11 of https://lenovopress.lenovo.com/lp1467.pdf
GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX iommu.passthrough=0 iommu.strict=1"
GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX iommu=force iommu.passthrough=0 iommu.strict=1"