[DOCS] Include new features.

README.md

@@ -40,4 +40,4 @@ If instead of QEMU, you'd like to import the setup into Virt-Manager for further
 
 You're done!
 
-Look in the `docs` folder for more information on adding passthrough hardware (for GPU graphics), set up bridged networking, and enabling sound features.
+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.

docs/guide-networking.md

@@ -51,3 +51,7 @@ Once you have set up the bridge and tun/tap on the host, you'll have to add the
 ```
     -netdev tap,id=net0,ifname=tap0,script=no,downscript=no \
 ```
+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.
+```
+    -device vmxnet3,netdev=net0,id=net0,mac=52:54:00:c9:18:27 \
+```

docs/guide-passthrough.md

@@ -1,6 +1,5 @@
 Guide to PCIe Passthrough
 =========================
-This is a draft.
 
 ## Enable BIOS features
 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`.
@@ -22,6 +21,9 @@ An example output might look like this:
 
 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.
 
+## Load the vfio-pci module
+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.
+
 ## Add Kernel Flags
 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.
 
@@ -35,7 +37,7 @@ iommu=pt amd_iommu=on vfio-pci.ids=1002:66af,1002:ab20
 iommu=pt intel_iommu=on vfio-pci.ids=1002:66af,1002:ab20
 ```
 
-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.
+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.
 
 ## Attach card to QEMU
 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. 
@@ -44,7 +46,7 @@ You will need to attach the cards using the BDF IDs for the audio and video cont
 
 ```
     -vga none \
-    -device ioh3420,bus=pcie.0,multifunction=on,port=1,chassis=1,id=port.1 \
+    -device pcie-root-port,bus=pcie.0,multifunction=on,port=1,chassis=1,id=port.1 \
     -device vfio-pci,host=26:00.0,bus=port.1,multifunction=on,romfile=/path/to/card.rom \
     -device vfio-pci,host=26:00.1,bus=port.1 \
 ```