On 25.10.2021 19:35, Dongli Zhang wrote: > The guest may access the pv vcpu_time_info immediately after > VCPUOP_register_vcpu_info. This is to borrow the idea of > VCPUOP_register_vcpu_time_memory_area, where the > force_update_vcpu_system_time() is called immediately when the new memory > area is registered. > > Otherwise, we may observe clock drift at the VM side if the VM accesses > the clocksource immediately after VCPUOP_register_vcpu_info(). > > Reference: > https://lists.xenproject.org/archives/html/xen-devel/2021-10/msg00571.html > Cc: Joe Jin <joe....@oracle.com> > Signed-off-by: Dongli Zhang <dongli.zh...@oracle.com>
Reviewed-by: Jan Beulich <jbeul...@suse.com> Ian - any thoughts towards 4.16 here either way? Jan
