Il 15/02/2013 19:38, Peter Maydell ha scritto: >>> But these memory regions belong to this device -- we own them and >>> >> they won't go away until the device is destroyed [which is never, >>> >> as it happens, for this device.] More generally, if it's valid >>> >> for us to hold a MemoryRegion* and call memory_region_get_ram_ptr() >>> >> in the read/write function, it's just as valid to keep the ram pointer: >>> >> the two have exactly matching lifetimes, unless I'm missing something. >> > >> > No, you're not: "In practice it should be handled just fine by reference >> > counting, but I still find it harder to wrap my head around it". > I'm still confused. Memory regions aren't reference counted. > We're the device, we own the MemoryRegion, we can happily > do whatever we like with it for the lifetime of the device.
Yes: reference counting of the device. > I don't propose to change this patch for v2 of this series, > since there doesn't seem to be any need to do so. Fair enough. Paolo
