Enable IOMMU for systemd-boot

General system Kernel, boot, graphics & hardware
1

How can i add intel_iommu=on intel=pt on systemd-boot ?

I added the option in /etc/kernel/cmdline
But after reboot dmesg | grep IOMMU gives this output

[    0.081739] DMAR-IR: IOAPIC id 2 under DRHD base  0xfed90000 IOMMU 0
[    0.384547] AMD-Vi: AMD IOMMUv2 functionality not available on this system - This is not a bug.
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2

You need to run: sudo reinstall-kernels afterwards to regenerate your boot entries and initrds.

2 Likes
3

okay let me try…

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4

Yooooooooooo…it worked !!! Thank you so much

That means:
for grub it’s: grub-mkconfig -o /boot/grub/grub.cfg
for systemd-boot it’s: sudo reinstall-kernels :smirk:

[    0.036646] DMAR: IOMMU enabled
[    0.081935] DMAR-IR: IOAPIC id 2 under DRHD base  0xfed90000 IOMMU 0
[    0.456469] AMD-Vi: AMD IOMMUv2 functionality not available on this system - This is not a bug.
1 Like
5

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