On Thu, May 28, 2015 at 02:59:09PM +0300, Gal Hammer wrote:
> On 28/05/2015 13:25, Paolo Bonzini wrote:
> >
> >
> >On 27/04/2015 13:19, Gal Hammer wrote:
> >>+static void vmgenid_init(Object *obj)
> >>+{
> >>+ SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
> >>+ VmGenIdState *s = VMGENID(obj);
> >>+
> >>+ memory_region_init_io(&s->iomem, obj, &vmgenid_ram_ops, s, "vgid", 16);
> >
> >This is a small problem. The spec says the memory of the VMGENID should
> >not be uncacheable, but MMIO _should_ be uncacheable.
> >
> >This is running on a VM so we maybe not care, but it's worth pointing it
> >out.
>
> And the way I can fix it would be...? Is there another memory region I can
> use?
>
> Thanks,
>
> Gal.
I think we hammered out an interesting alternative off-list: get hold of
some AddressRegionNVS memory and copy data from MMIO or port io over
there when you get an interrupt.
> >Paolo
> >
> >>+ sysbus_init_mmio(sbd, &s->iomem);
> >>+
> >>+ object_property_add_str(obj, PROPERTY_UUID, NULL, vmgenid_set_uuid,
> >>NULL);
> >>+}
> >>+
