Re: [Qemu-devel] [PATCH v2 02/20] target-i386: move back cpu_exec_init() to init

[Eduardo Habkost <ehabkost@redhat.com>]

On Fri, Oct 14, 2016 at 03:34:17PM +0200, Laurent Vivier wrote:
> On 14/10/2016 15:33, Eduardo Habkost wrote:
> > On Thu, Oct 13, 2016 at 06:24:44PM +0200, Laurent Vivier wrote:
> >> We have now the cpu_exec_realize() in realize,
> >> so the init part must be in init.
> >>
> >> I've removed the cannot_destroy_with_object_finalize_yet field as
> >> unsafe references have been moved to cpu_exec_realize().
> >> (tested with QOM command provided by commit 4c315c27 with
> >> "athlon-x86_64-cpu")
> >>
> >> CC: Eduardo Habkost <ehabkost@redhat.com>
> >> Signed-off-by: Laurent Vivier <lvivier@redhat.com>
> > 
> > Resending the question I asked in my reply to v1:
> > 
> > Instead of creating requiring each subclass to manually call
> > cpu_exec_init()) on instance_init, why don't we move parts of
> > cpu_exec_init()/cpu_exec_realize() code to cpu_common_initfn()?
> > (TYPE_CPU's instance_init)
> > 
> > (And if there's any code that needs to be run after the
> > subclasses instance_init functions, we can just add a
> > instance_post_init function to TYPE_CPU).
> > 
> 
> It's done in PATCH 20/20.
> 
> Is that what you want?

Yes (except that I would have inlined the the cpu_exec_init()
code inside cpu_common_init()).

I think I expected this to be done in a single step, that
wouldn't require touching code for all architectures three times.
Something like:

1) Move cpu->as, cpu->num_ases, cpu->thread_id, cpu->memory
   initialization, and "memory" property registration from
   cpu_exec_init() to cpu_common_init() (no architecture code
   touched).
2) (optional) Rename cpu_exec_init() to cpu_exec_realize() (only
   trivial changes in architecture code)

-- 
Eduardo