Re: [Xen-devel] [v3][PATCH 2/2] libxl: introduce gfx_passthru_kind

["Chen, Tiejun" <tiejun.chen@xxxxxxxxx>]

On 2015/3/26 18:06, Ian Campbell wrote:
> On Thu, 2015-03-26 at 08:53 +0800, Chen, Tiejun wrote:
> > > Hrm, OK. I suppose we can live with autodetect and igd both meaning igd
> > > and whoever adds a new type will have to remember to add a check for
> > > qemu-trad then.
> > When we really have to introduce a new type, this means we probably need
> > to change something inside qemu codes. So a new type should just go into
> > that table to support qemu upstream since now we shouldn't refactor
> > anything in qemu-xen-traditional, right?
> We'd want to error out on attempts to use qemu-xen-trad with non-IGD
> passthru.
On qemu-xen-traditional side, we always recognize this as BOOLEAN,

        if (libxl_defbool_val(b_info->u.hvm.gfx_passthru)) { 

            flexarray_append(dm_args, "-gfx_passthru"); 

        }

Additionally, this is also clarified explicitly in manpage, and 
especially we don't change this behavior now, so I'm just wondering why 
we should do this :)
Thanks
Tiejun

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