[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Questions about hvm domU default devices with upstream qemu
On Wed, 4 Sep 2013, Fabio Fantoni wrote: > Il 04/07/2013 15:51, Fabio Fantoni ha scritto: > > Last year I posted a question about default devices of upstream qemu that > > differ from qemu traditional, like empty floppy and cdrom in particular. > > About empty floppy now is disabled as workaround. > > About empty cdrom Stabellini tells that is useful, so I tried to use it but > > cd-insert was failing,and I must define other empty cdrom on xl > > configuration file, for example with: ',raw,hdb,ro,cdrom'. > > It seem that there isn't default devices usable without define them in xen, > > and I think that probably need to revise the definition of the devices to > > avoid empty and unusable ones and to do everything as best as possible (also > > with possibly reviewing qemu side). > > Another good thing is also consider pv domU case and possible future support > > of spice and/or other useful features. > > Thanks for any reply. > > I seen no replies about this, I think is important improve upstream qemu > support and remove the traditional ASA upstream will be equivalent or superior > in all features. > > I also think is good idea add q35 support on xen. > Seem that hvm domUs have performance limits, in particular on windows domUs > (also with pv drivers) caused probably by old hardware emulation by qemu > and/or xen support limited on some instruction sets. > I don't know how to add essential q35 support on hvmloader to do some tests > and have effective data about improvements. > Anyone on this? I agree that this is important and thanks for raising the issue. It would be nice if somebody stepped up to do the q35 work. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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