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[DOCS] Include new features.
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@ -40,4 +40,4 @@ If instead of QEMU, you'd like to import the setup into Virt-Manager for further
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You're done!
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Look in the `docs` folder for more information on adding passthrough hardware (for GPU graphics), set up bridged networking, and enabling sound features.
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To fine-tune the system and improve performance, look in the `docs` folder for more information on [adding memory](docs/guide-performance.md), seting up [bridged networking](docs/guide-networking.md), adding [passthrough hardware (for GPUs)](docs/guide-passthrough.md), and enabling sound features.
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@ -51,3 +51,7 @@ Once you have set up the bridge and tun/tap on the host, you'll have to add the
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```
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-netdev tap,id=net0,ifname=tap0,script=no,downscript=no \
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```
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You can optionally use the `vmxnet3` driver for higher performance compared to the default e1000. Note that replacing it requires macOS El Capitan or higher.
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```
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-device vmxnet3,netdev=net0,id=net0,mac=52:54:00:c9:18:27 \
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```
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@ -1,6 +1,5 @@
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Guide to PCIe Passthrough
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=========================
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This is a draft.
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## Enable BIOS features
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To use PCIe Passthrough, you will need a compatible motherboard and CPU with support for iommu. Look up your motherboard manual on how to enable these features, but they are commonly named `VT-d` or `AMD Vi`.
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@ -22,6 +21,9 @@ An example output might look like this:
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The first value (`26:00.0`) is the BDF ID, and the last (`1002:6810`) is the Device ID. Cards with a built-in audio controller have to be passed together, so note the IDs for both subdevices.
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## Load the vfio-pci module
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The `vfio-pci` module is not included in the kernel on all systems, you may need for load it as part of initramfs. Look up your distro's documentation on how to do this.
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## Add Kernel Flags
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The `iommu` kernel module is not enabled by default, but you can enable it on boot by passing the following flags to the kernel. Replace the Device IDs with your corresponding card.
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@ -35,7 +37,7 @@ iommu=pt amd_iommu=on vfio-pci.ids=1002:66af,1002:ab20
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iommu=pt intel_iommu=on vfio-pci.ids=1002:66af,1002:ab20
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```
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To do this permanently, you can add it to your bootloader. If you're using GRUB, for example, edit `/etc/default/grub` and add the previous lines to the `GRUB_CMDLINE_LINUX_DEFAULT` section, then run `sudo update-grub` and reboot.
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To do this permanently, you can add it to your bootloader. If you're using GRUB, for example, edit `/etc/default/grub` and add the previous lines to the `GRUB_CMDLINE_LINUX_DEFAULT` section, then run `sudo update-grub` (or `sudo grub-mkconfig` on some systems) and reboot.
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## Attach card to QEMU
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You will need to attach the cards using the BDF IDs for the audio and video controller. The following example shows the config for a card with two devices. The romfile parameter is optional.
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@ -44,7 +46,7 @@ You will need to attach the cards using the BDF IDs for the audio and video cont
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```
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-vga none \
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-device ioh3420,bus=pcie.0,multifunction=on,port=1,chassis=1,id=port.1 \
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-device pcie-root-port,bus=pcie.0,multifunction=on,port=1,chassis=1,id=port.1 \
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-device vfio-pci,host=26:00.0,bus=port.1,multifunction=on,romfile=/path/to/card.rom \
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-device vfio-pci,host=26:00.1,bus=port.1 \
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```
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