Re: [Qemu-devel] [PATCH 17/23] xen: convert to MemoryListener API

[Avi Kivity]

On 01/04/2012 08:06 PM, Stefano Stabellini wrote:
> On Mon, 19 Dec 2011, Avi Kivity wrote:
> > -static int xen_log_start(CPUPhysMemoryClient *client, target_phys_addr_t 
> > phys_addr, ram_addr_t size)
> > +static void xen_log_start(MemoryListener *listener,
> > +                          MemoryRegionSection *section)
> >  {
> > -    XenIOState *state = container_of(client, XenIOState, client);
> > +    XenIOState *state = container_of(listener, XenIOState, 
> > memory_listener);
> > +    int r;
> >  
> > -    return xen_sync_dirty_bitmap(state, phys_addr, size);
> > +    r = xen_sync_dirty_bitmap(state, section->offset_within_address_space,
> > +                              section->size);
> > +    assert(r >= 0);
> >  }
>
> I really feel I should thank you for your work because you did a very
> good job porting xen to the new api. In fact apart from the dirty bitmap
> (Anthony is about to send a patch to fix the issue:
> xen_sync_dirty_bitmap can actually fail sometimes), everything else
> is done right and works correctly.

Thanks.

> However I would have appreciated if you could have given us more time to
> review the four patches you wrote: considering the time of the year both
> Anthony and I were on vacation and didn't have a chance to read them
> until today.

I realize that I bypassed the normal protocol here, but I had to choose
one of several bad choices:

- continue developing without merging, and risk large rebases in case
the patches (or something else in qemu) had to be changed
- stop developing until you returned from your (undoubtedly well
deserved) vacations
- merge and look away while whistling innocently

I chose the third, since I still have quite a lot of work with the
memory API.  Of course I will help with fixing the fallout if needed,
and since you're back online, we can go back to the normal way of
reviewing and testing patches before merging.

-- 
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.