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Re: [libvirt] [PATCH 2/4] Add a <graphics> type for SPICE protocol

On Mon, Oct 19, 2009 at 05:47:47PM +0200, Dan Kenigsberg wrote:
> Thanks for the patches (and sorry for the late response).
> The patches are fine, though I am still missing a means to control which
> of spice channels are to be encrypted. Also missing is a way to set
> key/cert files and cipher suite per domain. (I aksed spice folks to
> avoid this problem by using reasonable defaults). More of a problem is
> the need to set/reset spice "ticket" (one time password), or at least
> disable it completely on the command line (with ,disable-ticketing).

For VNC, we leave  key/cert file configuration to be done per-host
in /etc/libvirt/qemu.conf.  I was anticipating the same for SPICE,
with a spice_tls_x509_cert_dir  parameter, to match the existing
vnc_tls_x509_cert_dir parameter. We could easily add cipher suite
parameters to the config too if there's a compelling need to use a
non-default setting.

IIRC, there's an open RFE for the 'ticket' stuff already. 

> On Tue, Sep 29, 2009 at 04:43:51PM +0100, Daniel P. Berrange wrote:
> > This supports the -qxl argument in RHEL-5's fork of KVM
> > which has SPICE support. QXL is a graphics card, but
> > inexplicably doesn't use the standard -vga syntax for
> > generic configuration. Also -qxl is rather useless unless
> > you also supply -spice (coming in next patch)
> > +
> > +                if (virAsprintf(&optstr, "%u,ram=%u",
> > +                                def->videos[0]->heads,
> > +                                (def->videos[0]->vram /1024)) < 0)
> > +                    goto no_memory;
> this hides spice's own default, and sends ",ram=0" if xml lacks vram
> attribute. I think it would be better to drop ",ram" completely if
> vram==0.

hmm, I missed something somewhere then, because our XML parser should
always set a default vram value if it is omitted, so you should never
get a ram=0 flag.

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