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[Qemu-devel] EHCI (usb 2.0) support
From: |
Max Krasnyansky |
Subject: |
[Qemu-devel] EHCI (usb 2.0) support |
Date: |
Fri, 05 Sep 2008 22:54:00 -0700 |
User-agent: |
Thunderbird 2.0.0.16 (X11/20080723) |
With my latest USB patches, that I just sent out, UHCI support is probably as
good as it gets. I tested all kinds of devices with Linux and XP guests and
things are solid.
Host USB is now fully async and I do not see any delays/jerkiness anymore.
However, overall performance can certainly be improved by supporting EHCI (ie
usb-2.0 stuff). For example native performance of an external USB hard drive
is ~28MB/sec (measured with hdparm). The same drive attached to the Linux
guest gives me about 500KB/sec. Huge difference.
So I'm going to start working on EHCI (starting tomorrow). If somebody has any
EHCI code I can use let me know.
Max
- [Qemu-devel] EHCI (usb 2.0) support,
Max Krasnyansky <=