[Xen-devel] Fix "Many lost ticks" warning in ia32e guest

["Yang, Xiaowei" <xiaowei.yang@xxxxxxxxx>]

Keir,
This patch fixes "Many lost ticks" warning in ia32e guest. 
New i8254.c code in HV has some problem calculating PIT counter. So when
guest kernel reads it and uses it to adjust last_tsc when PIT is
generated, it may think there are more than two ticks of time passed
between 2 continuous PIT, which ended up with "Warning: Many lost
ticks".

Thanks,
Xiaowei

Attachment: lost_tick2.patch
Description: lost_tick2.patch

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