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Re: [Xen-devel] [PATCH] libxl: adjust hvm direct boot code



On Thu, Jan 15, 2015 at 01:50:27PM +0000, Ian Campbell wrote:
> On Thu, 2015-01-15 at 12:29 +0000, Wei Liu wrote:
> > The -initrd and -append parameters should only be supplied to QEMU iff
> > -kernel parameter is present, because that's how QEMU works.
> 
> What do you think of catching this e.g. in the setdefault function and
> warning or erroring in this case?
> 

I'm OK with that. Explicitly warning or erroring is more sensible than
silently dropping those values.

Wei.

> > Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx>
> > Cc: Ian Campbell <ian.campbell@xxxxxxxxxx>
> > Cc: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
> > Cc: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
> > Cc: Chunyan Liu <cyliu@xxxxxxxx>
> > ---
> >  tools/libxl/libxl_dm.c |   11 ++++++-----
> >  1 file changed, 6 insertions(+), 5 deletions(-)
> > 
> > diff --git a/tools/libxl/libxl_dm.c b/tools/libxl/libxl_dm.c
> > index c2b0487..7226f5d 100644
> > --- a/tools/libxl/libxl_dm.c
> > +++ b/tools/libxl/libxl_dm.c
> > @@ -527,14 +527,15 @@ static char ** 
> > libxl__build_device_model_args_new(libxl__gc *gc,
> >      if (b_info->type == LIBXL_DOMAIN_TYPE_HVM) {
> >          int ioemu_nics = 0;
> >  
> > -        if (b_info->kernel)
> > +        if (b_info->kernel) {
> >              flexarray_vappend(dm_args, "-kernel", b_info->kernel, NULL);
> >  
> > -        if (b_info->ramdisk)
> > -            flexarray_vappend(dm_args, "-initrd", b_info->ramdisk, NULL);
> > +            if (b_info->ramdisk)
> > +                flexarray_vappend(dm_args, "-initrd", b_info->ramdisk, 
> > NULL);
> >  
> > -        if (b_info->cmdline)
> > -            flexarray_vappend(dm_args, "-append", b_info->cmdline, NULL);
> > +            if (b_info->cmdline)
> > +                flexarray_vappend(dm_args, "-append", b_info->cmdline, 
> > NULL);
> > +        }
> >  
> >          if (b_info->u.hvm.serial || b_info->u.hvm.serial_list) {
> >              if ( b_info->u.hvm.serial && b_info->u.hvm.serial_list )
> 

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