Differences

This shows you the differences between two versions of the page.

--- ubuntu:gpu:gpu_pass-through [2023/06/25 11:13] – created peter
+++ ubuntu:gpu:gpu_pass-through [2023/06/25 11:32] (current) – peter
@@ Line 5: / Line 5: @@
 ----
-===== Verify the host environment supports GPU pass-through =====
+[[Ubuntu:GPU:GPU pass-through:Configuring the host|Configuring the host]]
-TODO:
+[[Ubuntu:GPU:GPU pass-through:Configuring the guest|Configuring the guest]]
-----
-===== Enable IOMMU =====
-**IOMMU** is usually disabled by default.
-  * It needs to be enable at boot time in the **/etc/default/grub** configuration file.
-For AMD-based hosts:
-<file bash /etc/default/grub>
-GRUB_CMDLINE_LINUX="iommu=pt amd_iommu=on rd.driver.pre=vfio-pci"
-</file>
-For Intel-based hosts:
-<file bash /etc/default/grub>
-GRUB_CMDLINE_LINUX="intel_iommu=on iommu=pt rd.driver.pre=vfio-pci"
-</file>
-----
-===== Re-generate the main GRUB 2 configuration file =====
-The GRUB 2 configuration file is **/boot/grub2/grub.cfg**.
-<code bash>
-sudo grub2-mkconfig -o /boot/grub2/grub.cfg
-</code>
-----
-===== Reboot =====
-----
-===== Verify that IOMMU is enabled =====
-<code bash>
-sudo dmesg | grep -e DMAR -e IOMMU
-</code>
-returns:
-<code bash>
-[    2.172228] pci 0000:00:00.2: AMD-Vi: IOMMU performance counters supported
-[    2.176588] pci 0000:00:00.2: AMD-Vi: Found IOMMU cap 0x40
-[    2.176924] perf/amd_iommu: Detected AMD IOMMU #0 (2 banks, 4 counters/bank).
-[    3.875165] AMD-Vi: AMD IOMMUv2 loaded and initialized
-</code>
-----