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Re: [Qemu-devel] [PATCH 1.1] xhci: add usage info to docs


From: Anthony Liguori
Subject: Re: [Qemu-devel] [PATCH 1.1] xhci: add usage info to docs
Date: Wed, 30 May 2012 14:46:15 +0800
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:11.0) Gecko/20120329 Thunderbird/11.0.1

On 05/29/2012 05:20 PM, Gerd Hoffmann wrote:
Signed-off-by: Gerd Hoffmann<address@hidden>

Applied.  Thanks.

Regards,

Anthony Liguori

---
  docs/usb2.txt |   15 +++++++++++++++
  1 files changed, 15 insertions(+), 0 deletions(-)

diff --git a/docs/usb2.txt b/docs/usb2.txt
index 228aa33..d17e3c0 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
  ======================





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