Re: [Xen-devel] [XEN][RFC PATCH V2 14/17] xl-parsing: Parse new device_models option

[Julien Grall <julien.grall@xxxxxxxxxx>]

On 08/23/2012 02:35 PM, Ian Campbell wrote:
> On Wed, 2012-08-22 at 13:32 +0100, Julien Grall wrote:
>    
> > Add new option "device_models". The user can specify the capability of the
> > QEMU (ui, vifs, ...). This option only works with QEMU upstream (qemu-xen).
> >
> > For instance:
> > device_models= [ 'name=all,vifs=nic1', 'name=qvga,ui', 'name=qide,ide' ]
> >      
> iirc you can give multiple vifs -- what does that syntax look like?
>
>    
vifs=nic1;nic2

> I didn't ask before -- what does naming the dm give you? Is it just used
> for ui things like logging or can you cross reference this in some way?
>
>    
It's used for logging and in qemu log filename. It's not a mandatory.
> > Signed-off-by: Julien Grall<julien.grall@xxxxxxxxxx>
> > ---
> >   tools/libxl/Makefile     |    2 +-
> >   tools/libxl/libxlu_dm.c  |   96 ++++++++++++++++++++++++++++++++++++++++++++++
> >   tools/libxl/libxlutil.h  |    5 ++
> >   tools/libxl/xl_cmdimpl.c |   29 +++++++++++++-
> >   4 files changed, 130 insertions(+), 2 deletions(-)
> >   create mode 100644 tools/libxl/libxlu_dm.c
> >
> > diff --git a/tools/libxl/Makefile b/tools/libxl/Makefile
> > index 47fb110..2b58721 100644
> > --- a/tools/libxl/Makefile
> > +++ b/tools/libxl/Makefile
> > @@ -79,7 +79,7 @@ AUTOINCS= libxlu_cfg_y.h libxlu_cfg_l.h _libxl_list.h 
> > _paths.h \
> >   AUTOSRCS= libxlu_cfg_y.c libxlu_cfg_l.c
> >   AUTOSRCS += _libxl_save_msgs_callout.c _libxl_save_msgs_helper.c
> >   LIBXLU_OBJS = libxlu_cfg_y.o libxlu_cfg_l.o libxlu_cfg.o \
> > -       libxlu_disk_l.o libxlu_disk.o libxlu_vif.o libxlu_pci.o
> > +       libxlu_disk_l.o libxlu_disk.o libxlu_vif.o libxlu_pci.o libxlu_dm.o
> >   $(LIBXLU_OBJS): CFLAGS += $(CFLAGS_libxenctrl) # For xentoollog.h
> >
> >   CLIENTS = xl testidl libxl-save-helper
> > diff --git a/tools/libxl/libxlu_dm.c b/tools/libxl/libxlu_dm.c
> > new file mode 100644
> > index 0000000..9f0a347
> > --- /dev/null
> > +++ b/tools/libxl/libxlu_dm.c
> > @@ -0,0 +1,96 @@
> > +#include "libxl_osdeps.h" /* must come before any other headers */
> > +#include<stdlib.h>
> > +#include "libxlu_internal.h"
> > +#include "libxlu_cfg_i.h"
> > +
> > +static void split_string_into_string_list(const char *str,
> > +                                          const char *delim,
> > +                                          libxl_string_list *psl)
> >      
> Is this a cut-n-paste of the one in xl_cmdimpl.c or did it change?
>
> Probably better to add this as a common utility function somewhere.
>    
It's nearly the same, except it's skip blank at the beginning
of a value.
For instance if we have 'foo;   bar', the function will return
['foo', 'bar'].

--
Julien

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