On Wed, Jun 6, 2012 at 1:42 PM, Anthony Liguori <aligu...@us.ibm.com> wrote:
> On 06/06/2012 11:31 AM, Benjamin Herrenschmidt wrote: > >> On Wed, 2012-06-06 at 10:52 +0800, li zhang wrote: >> >>> Hi Anthony, >>> >>> >>> Any comment on this? >>> >> >> Allright, this is all quite confusing... >> >> He's what I think should happen: >> >> When no option is passed -at-all-, we should have vga std and usb ohci + >> usb mouse + usb ps2. >> >> When -nodefault is passed, we should have none of the above. >> > > -nodefault is a pretty ugly hack. I don't think there's any good reason > to involve -nodefault into this discussion. > > > >> -vga should only affect vga (a shortcut for -device >> pick_your_vga_poison) >> > > Ack. > > > >> -usb should be essentially useless by default unless -nodefault is >> passed in which case it is necessary to enable usb support, and -device >> (or equivalent) to manually add the keyboard and mouse (libvirt). >> > > If you want pseries to always have usb, just make it there by default and > yeah, -usb would be useless. If you want the option to not have usb, > introduce a machine option I guess. > Thanks Anthony. It's a better way to introduce one machine option. :) > I think it's over thinking it though. There's little harm in having a usb > controller present all the time. > Got it. Thanks. > > Regards, > > Anthony Liguori > > > >> That's the best I can think of ... however it might be a bit tricky >> seeing how qemu does things in vl.c at the moment, we might want to >> introduce a default_usb variable which is used to set usb_enabled. >> >> BTW. The mac models should essentially behave the same, at least the >> 64-bit one (32-bit supports CUDA for keyboard/mouse so USB isn't >> strictly necessary). >> >> Cheers, >> Ben. >> >>> >>> Thanks. >>> >>> On Tue, Jun 5, 2012 at 5:48 PM, li zhang<zhlci...@gmail.com> wrote: >>> Hi all, >>> >>> For pseries, when creating VMs with "-vga std", >>> it requires usb mouse and usb kbd devices to be added. >>> >>> But with default options, vga is enabled and usb is disabled. >>> User may use default options as the following commands: >>> >>> $qemu -M pseries >>> >>> If vga is enabled, usb mouse and usb kbd is disabled, >>> the mouse and kbd can't be used. So it's very hard for >>> users to use. >>> >>> I think it's necessary to enable usb with default options. >>> >>> Any idea about that? >>> Your comments are very appreciated. :) >>> >>> Thanks. >>> -Li >>> >>> >>> >>> >>> -- >>> >>> >>> Best Regards >>> -Li >>> >>> >>> >> >> > -- Best Regards -Li
