On 8/21/20 6:27 PM, Anchal Agarwal wrote: > From: Munehisa Kamata <kamatam@xxxxxxxxxx> > > Add Xen PVHVM specific system core callbacks for PM > hibernation support. The callbacks suspend and resume > Xen primitives like shared_info, pvclock and grant table. > These syscore_ops are specifically for domU hibernation. > xen_suspend() calls syscore_suspend() during Xen suspend > operation however, during xen suspend lock_system_sleep() > lock is taken and thus system cannot trigger hibernation. > These system core callbacks will be called only from the > hibernation context. Well, they can be called from Xen suspend too, which is why you have the checks in the beginning. -boris
