On 03/08/16 14:00, Jan Beulich wrote: > ... instead of unconditionally against the PIT. This allows for local > and master system times to remain in better sync (which matters even > when, on any modern system, the master time is really used only during > secondary CPU bringup, as the error between the two is in fact > noticable in cross-CPU NOW() invocation monotonicity). > > This involves moving the init_platform_timer() invocation into > early_time_init(), splitting out the few things which really need to be > done in init_xen_time(). That in turn allows dropping the open coded > PIT initialization from init_IRQ() (it was needed for APIC clock > calibration, which runs between early_time_init() and init_xen_time()). > > In the course of this re-ordering also set the timer channel 2 gate low > after having finished calibration. This should be benign to overall > system operation, but appears to be the more clean state. > > Also do away with open coded 8254 register manipulation from 8259 code. > > Signed-off-by: Jan Beulich <jbeul...@suse.com>
Reviewed-by: Andrew Cooper <andrew.coop...@citrix.com>
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