[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH v2 2/2] libxl: Fix nographic with upstream qemu
On Mon, Nov 25, 2013 at 08:39:22PM +0100, Sander Eikelenboom wrote: > > Monday, November 25, 2013, 8:28:27 PM, you wrote: > > > 2013/11/25 Anthony PERARD <anthony.perard@xxxxxxxxxx> > > >> On Tue, Nov 19, 2013 at 03:57:09PM +0100, Fabio Fantoni wrote: > >> > Fix xl nographic parameter with upstream qemu using vga none > >> > instead of -nographic qemu parameter not working anymore and > >> > deprecated. > >> > > >> > Changes from v1: > >> > - libxl_create.c: > >> > - add vga=none if nographic=1 only with upstream qemu > >> > - move setdefault of nographic up, otherwise xl create will > >> > fail if nographic xl paramter is not set > >> > >> Could you tell me where it is said that -nographic is deprecated? > >> > > > On one old qemu-devel post if I remember good, I not found it now with fast > > search. > > this one of mine: > http://osdir.com/ml/xen-development/2013-10/msg00134.html > > which refers to a post on qemu-devel: > http://comments.gmane.org/gmane.comp.emulators.qemu/172385 Thanks for the pointers. > >> > >> Also, I've did few tests, and it look like nographic=1 still works well. > >> > > > When I did a tests time ago with upstream qemu gave always cirrus vga with > > hvm domUs, also with vga and stdvga not setted and nographic on. > > Tried also removing my patches about -nodefaults but same result. > > When I did this patches I found that xl setted cirrus in any case and also > > with -nographic with upstream qemu not override -vga or -device. > > > >> > >> In QEMU, "-vga none" and "-nographic" are two different things. The > >> first parameter disable the graphic emulation, which mean you can have a > >> guest without graphic card (lspci will show that). The second one is to > >> disable any graphic output (sdl, vnc, ...). > >> > >> The only issue might be the documentation. > >> > > > Sorry, about qemu traditional I haven't well documented, but on this patch > > I setted nographic equivalent to vga none only with upstream qemu, so the > > qemu-trad remain correctly. > > Another note, I use spice with upstream qemu instead of vnc (because is > > largely better), probably -nographic not disable it. > > > Sumarizing, previous patch about vga none after new version following your > > advice can be useful in any case. > > About nographic instead I am doubtful about how to proceed, I think, > > however that an improvements and/or more documentations are needed. > > Ideas or tips about nographic? After reading those threads about nographic deprecation, it is said that it is better to use '-display none' instead of '-nographic'. So '-display none' just mean you get no VNC, no SDL window, no SPICE, nothing, but you can still get a graphic card in the guest, with no way to display its output. I suppose 'nographic' xl options should keep the same effect which is no graphic output. So if you want a guest without graphic card, then your new 'vga=none' will be for you. -- Anthony PERARD _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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