Comment on I7-14700 and Asrock z690 extreme - can't figure out PCIE passthrogh
AlphaAutist@lemmy.world 8 months ago
It looks like it should be possible as both your cpu and motherboard support Intel VT-d
ark.intel.com/…/intel-core-i7-processor-14700-33m…
download.asrock.com/Manual/Z690 Extreme.pdf
PCIe pass through isn’t enabled by default in Proxmox and requires some manual changes to the bootloader (grub or systemd-boot) as well as loading some kernel modules. You may also need to enable VT-d in your BIOS. You can read proxmox’ guide for enabling PCIe pass through here:
wildbus8979@sh.itjust.works 8 months ago
The motherboard need to support IOMMU, not Vt-d
possiblylinux127@lemmy.zip 8 months ago
Are you sure? I though Vt-d is the Intel virtualization extension that is used my IOMMU
wildbus8979@sh.itjust.works 8 months ago
Yes I’m sure, they are related and you need VT-d for IOMMU but not all motherboard isolate all the PCIe devices separately. Server/Enterprise boards always do, but consumer grade stuff can be hit or miss. Maybe it’s a little better with more recent hardware though, I haven’t checked in a couple of gens.
possiblylinux127@lemmy.zip 8 months ago
Can you name an Intel system from the last 2 years that doesn’t support it?
nemanin@lemmy.world 8 months ago
Ok. So they are different?
How do I tell which motherboards support IOMMU?
I can’t find it as a filter or search option on any websites…?
possiblylinux127@lemmy.zip 8 months ago
Its your CPU and yes it does support it as all Intel CPUs made within the last few years have support.
wildbus8979@sh.itjust.works 8 months ago
Yes they are different. VT-d is purely a function of the CPU (passed the BIOS enabling option).
First you will want to look at the output of
acpidump | egrep “DMAR|IVRS”, then you will also want to very that IOMMU groups don’t group your GFX with something that won’t be passed through using something like: gist.github.com/…/ba2d738985fce8990a4e9f32d07c6ad…nemanin@lemmy.world 8 months ago
This is in proxmox?
How can I tell if my mobo even supports it?