[Xen-devel] [PATCH] x86/hvm: fix corrupt ACPI PM-Timer during live migration

[Kouya Shimura <kouya@xxxxxxxxxxxxxx>]

The value of ACPI PM-Timer may be broken on save unless the timer mode
is delay_for_missed_ticks.
With other timer modes, vcpu->arch.hvm_vcpu.guest_time is always zero
and the adjustment from its value is wrong.

This patch fixes the saved value of ACPI PM-Timer:
- don't adjust the PM-Timer if vcpu->arch.hvm_vcpu.guest_time is zero.
- consolidate calculations of PM-Timer to one function. more precise on save.

Signed-off-by: Kouya Shimura <kouya@xxxxxxxxxxxxxx>

Attachment: fix_corrupt_saved_pmtimer.patch
Description: Text Data

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