Re: [Qemu-devel] [PATCH v2] hw/i386: Deprecate the machines pc-0.10 to pc-1.2

[Gerd Hoffmann <kraxel@redhat.com>]

  Hi,

> > v2:
> >  - Deprecate machines up to pc-1.2
> > 
> >  hw/i386/pc_piix.c | 9 +++++++++
> >  1 file changed, 9 insertions(+)
> > 
> > diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
> > index 9f102aa..aace378 100644
> > --- a/hw/i386/pc_piix.c
> > +++ b/hw/i386/pc_piix.c
> > @@ -38,6 +38,7 @@
> >  #include "sysemu/kvm.h"
> >  #include "hw/kvm/clock.h"
> >  #include "sysemu/sysemu.h"
> > +#include "sysemu/qtest.h"
> >  #include "hw/sysbus.h"
> >  #include "sysemu/arch_init.h"
> >  #include "sysemu/block-backend.h"
> > @@ -84,6 +85,14 @@ static void pc_init1(MachineState *machine,
> >      MemoryRegion *pci_memory;
> >      MemoryRegion *rom_memory;
> >      ram_addr_t lowmem;
> > +    char *mc_name = MACHINE_CLASS(pcmc)->name;
> > +
> > +    /* Machines pc-0.10 up to pc-1.2 are considered as deprecated
> > */
> > +    if (!qtest_enabled() && (!strncmp(mc_name, "pc-0.", 5)
> > +        || (!strncmp(mc_name, "pc-1.", 5) && mc_name[5] < '3'))) {
> > +        error_report("Machine type '%s' is deprecated, "
> > +                     "please use a newer type instead", mc_name);
> > +    }
> >  
> >      /*
> >       * Calculate ram split, for memory below and above 4G.  It's a
> > bit
> > 
> 
> Ping! Any comments on this version of the patch?

Does it make sense to build some infrastructure for this, so we don't
have ad-hoc code to print deprecation warnings everywhere?

Something like adding a "bool deprecated" or "char *deprecated_msg"
field to MachineClass (and possibly elsewhere too, for example
DeviceClass).

cheers,
  Gerd