diff options
| author | Gerd Hoffmann <kraxel@redhat.com> | 2012-05-29 11:20:31 +0200 |
|---|---|---|
| committer | Anthony Liguori <aliguori@us.ibm.com> | 2012-05-30 10:28:44 +0800 |
| commit | e78bd5ab07d65fec77fcae468b2836c79a836d49 (patch) | |
| tree | e7455655fbf41dd901833333927f72c7e5adb044 /docs/usb2.txt | |
| parent | 1643f2b232628905e8f32965ff36a87bd53b93c5 (diff) | |
xhci: add usage info to docs
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'docs/usb2.txt')
| -rw-r--r-- | docs/usb2.txt | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/docs/usb2.txt b/docs/usb2.txt index 228aa33ceb..d17e3c0044 100644 --- a/docs/usb2.txt +++ b/docs/usb2.txt @@ -55,6 +55,21 @@ try ... ... then use "bus=ehci.0" to assign your usb devices to that bus. +xhci controller support +----------------------- + +There also is xhci host controller support available. It got alot +less testing than ehci and there are a bunch of known limitations, so +ehci may work better for you. On the other hand the xhci hardware +design is much more virtualization-friendly, thus xhci emulation uses +less ressources (especially cpu). If you wanna give xhci a try +use this to add the host controller ... + + qemu -device nec-usb-xhci,id=xhci + +... then use "bus=xhci.0" when assigning usb devices. + + More USB tips & tricks ====================== |