If available, the kernel will enable IOMMU (a/k/a DMA remapping) by default on boot. To tools making use of that, particularly hypervisors, this provides better security without any downsides.

Signed-off-by: Peter Müller peter.mueller@ipfire.org --- config/kernel/kernel.config.x86_64-ipfire | 2 +- config/rootfiles/common/x86_64/linux | 1 + 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/config/kernel/kernel.config.x86_64-ipfire b/config/kernel/kernel.config.x86_64-ipfire index 06d98e325..a5c5a4e29 100644 --- a/config/kernel/kernel.config.x86_64-ipfire +++ b/config/kernel/kernel.config.x86_64-ipfire @@ -6488,7 +6488,7 @@ CONFIG_AMD_IOMMU_V2=y CONFIG_DMAR_TABLE=y CONFIG_INTEL_IOMMU=y CONFIG_INTEL_IOMMU_SVM=y -# CONFIG_INTEL_IOMMU_DEFAULT_ON is not set +CONFIG_INTEL_IOMMU_DEFAULT_ON=y CONFIG_INTEL_IOMMU_FLOPPY_WA=y # CONFIG_INTEL_IOMMU_SCALABLE_MODE_DEFAULT_ON is not set CONFIG_IRQ_REMAP=y diff --git a/config/rootfiles/common/x86_64/linux b/config/rootfiles/common/x86_64/linux index 326bc6c6e..22c8cf352 100644 --- a/config/rootfiles/common/x86_64/linux +++ b/config/rootfiles/common/x86_64/linux @@ -8071,6 +8071,7 @@ etc/modprobe.d/ipv6.conf #lib/modules/KVER-ipfire/build/include/config/INTEL_INT0002_VGPIO #lib/modules/KVER-ipfire/build/include/config/INTEL_IOATDMA #lib/modules/KVER-ipfire/build/include/config/INTEL_IOMMU +#lib/modules/KVER-ipfire/build/include/config/INTEL_IOMMU_DEFAULT_ON #lib/modules/KVER-ipfire/build/include/config/INTEL_IOMMU_FLOPPY_WA #lib/modules/KVER-ipfire/build/include/config/INTEL_IOMMU_SVM #lib/modules/KVER-ipfire/build/include/config/INTEL_IPS