tree 3305107f1087882cb77f1db1c713cdfe24a44154
parent 40f4ac0b510dbf9f00668ded5474290940616d09
author Boris Ostrovsky <boris.ostrovsky@oracle.com> 1493842851 -0400
committer Juergen Gross <jgross@suse.com> 1493973795 +0200

xen/x86: Do not call xen_init_time_ops() until shared_info is initialized

Routines that are set by xen_init_time_ops() use shared_info's
pvclock_vcpu_time_info area. This area is not properly available until
shared_info is mapped in xen_setup_shared_info().

This became especially problematic due to commit dd759d93f4dd ("x86/timers:
Add simple udelay calibration") where we end up reading tsc_to_system_mul
from xen_dummy_shared_info (i.e. getting zero value) and then trying
to divide by it in pvclock_tsc_khz().

Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>