diff options
| author | Jasper Ras <jras@hostnet.nl> | 2025-01-19 21:14:51 +0100 |
|---|---|---|
| committer | Jasper Ras <jras@hostnet.nl> | 2025-01-19 21:14:51 +0100 |
| commit | 9642cd7ae24f0ba79ce5647c709b35ae8f06a285 (patch) | |
| tree | ae25c3b0db7ae4c23186b294c6d000073f085c2d /3 Resources/libvirt | |
| parent | 969b96c2531fb986f6c7f21fd544391b439defd7 (diff) | |
vault backup: 2025-01-19 21:14:51
Diffstat (limited to '3 Resources/libvirt')
| -rw-r--r-- | 3 Resources/libvirt/Mediated devices.md | 11 | ||||
| -rw-r--r-- | 3 Resources/libvirt/SR-IOV.md | 9 |
2 files changed, 20 insertions, 0 deletions
diff --git a/3 Resources/libvirt/Mediated devices.md b/3 Resources/libvirt/Mediated devices.md new file mode 100644 index 0000000..fe9e551 --- /dev/null +++ b/3 Resources/libvirt/Mediated devices.md @@ -0,0 +1,11 @@ +#libvirt #linux #virtualisation + +--- +https://libvirt.org/drvnodedev.html#mediated-devices-mdevs + +They are virtual devices that share a single physical device. + +Similar to [[SR-IOV]] but sr-iov required registering and unregistering devices with the host PCIe bus via a host driver. +Mediated devices don't have to do this. + +So why would we still choose sriov?
\ No newline at end of file diff --git a/3 Resources/libvirt/SR-IOV.md b/3 Resources/libvirt/SR-IOV.md new file mode 100644 index 0000000..0881ec0 --- /dev/null +++ b/3 Resources/libvirt/SR-IOV.md @@ -0,0 +1,9 @@ +#linux #libvirt #virtualisation + +--- +Single root input/output virtualization: enables sharing of single PCI-e devices with multiple guests. + +Physical device = PF (Physical Function) +Virtual device = VF (Virtual Function) + +A PF is divided (by manufacturer) into *n* VFs. Thus a PF can be shared at most with *n* guests.
\ No newline at end of file |