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pseries: Make the PAPR RTC a qdev device
At present the PAPR RTC isn't a "device" as such - it's accessed only via firmware/hypervisor calls, and is handled in the sPAPR core code. This becomes inconvenient as we extend it in various ways. This patch makes the PAPR RTC a separate device in the qemu device model. For now, the only piece of device state - the rtc_offset - is still kept in the global sPAPREnvironment structure. That's clearly wrong, but leaving it to be fixed in a following patch makes for a clearer separation between the internal re-organization of the device, and the behavioural changes (because the migration stream format needs to change slightly when the offset is moved into the device's own state). Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Alexander Graf <agraf@suse.de>
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