V8.00.000.2025.06.17
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Signed-off-by: Marc S. Weidner <msw@coresecret.dev>
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@@ -94,6 +94,7 @@ image: "linux-image-amd64" # Could be a meta-package or a specific image lik
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# "linux-image-cloud-amd64" || "linux-image-cloud-arm64"
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# "linux-image-rt-amd64" || "linux-image-rt-arm64"
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# "linux-image-6.12.30+bpo-amd64"
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needrun: false # Static linking to "${TARGET}/run" can cause problems if this data is "burned" into the target.
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################################################################################################################################
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# Dropbear settings
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@@ -156,11 +157,11 @@ grub_parameter:
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##############################################################################################################################
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# Enables strict enforcement of IOMMU TLB invalidation, so devices will never be able to access stale data contents.
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# iommu.passthrough=0
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# - 'iommu.passthrough=0'
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# Prevents devices from operating in identity-mapped passthrough mode. Without this parameter (or with =1), devices could be
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# passed through without being monitored by the IOMMU in a truly restrictive manner. From a security standpoint,
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# iommu.passthrough=0 is an important step toward DMA isolation for all devices, especially for untrusted PCI(e) devices.
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# iommu.strict=1
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# - 'iommu.passthrough=0' is an important step toward DMA isolation for all devices, especially for untrusted PCI(e) devices.
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# - 'iommu.strict=1'
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# Enables Strict Mode for dma-iommu.c (i.e., all DMA transactions are validated synchronously). Without this parameter, the
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# kernel often runs in lazy mode, where mapping caches are used.
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# Performance vs. security: strict=1= more secure, but potentially slower, especially with many small DMA transfers.
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