Re: [Qemu-devel] [PATCH] usb: reword -usb command-line option and mention xHCI

[Stefan Hajnoczi]

On Thu, Aug 15, 2019 at 08:13:40AM +0200, Gerd Hoffmann wrote:
>   Hi,
> 
> > > > -Enable the USB driver (if it is not used by default yet).
> > > > +Enable USB emulation on machine types with an on-board USB host 
> > > > controller (if
> > > > +not enabled by default).  Note that on-board USB host controllers may 
> > > > not
> > > > +support USB 3.0.  In this case -device nec-usb-xhci can be used 
> > > > instead on
> > > 
> > > Should we maybe rather recommend qemu-xhci instead?
> > 
> > I think nec-usb-xhci is preferred because there are Windows drivers.
> > IIRC qemu-xhci works under Linux but not under Windows (just because the
> > PCI Vendor/Device ID aren't covered by any driver).
> > 
> > Gerd: Can you confirm this?
> 
> That applies to windows 7 only, which is EOL next year.
> 
> win7 doesn't ship with xhci drivers, but you can download and use
> nec/renesas drivers which require nec-usb-xhci.
> 
> win8+ ships with generic xhci drivers which works with all xhci
> hardware, including qemu-xhci.
> 
> So it indeed makes sense to refer to qemu-xhci.

Thanks, will fix in v2!

Stefan

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