Marcelo Tosatti 1eeacd413a kvmclock: clock should count only if vm is running ...

kvmclock should not count while vm is paused, because:

1) if the vm is paused for long periods, timekeeping
math can overflow while converting the (large) clocksource
delta to nanoseconds.

2) Users rely on CLOCK_MONOTONIC to count run time, that is,
time which OS has been in a runnable state (see CLOCK_BOOTTIME).

Change kvmclock driver so as to save clock value when vm transitions
from runnable to stopped state, and to restore clock value from stopped
to runnable transition.

Cc: qemu-stable@nongnu.org
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
(cherry picked from commit 00f4d64ee7)

Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>

2013-08-12 17:21:01 -05:00

..

apic.c

target-i386: Replace MSI_SPACE_SIZE with APIC_SPACE_SIZE

2013-05-01 13:04:19 +02:00

clock.c

kvmclock: clock should count only if vm is running

2013-08-12 17:21:01 -05:00

i8254.c

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i8259.c

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ioapic.c

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Makefile.objs

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pci-assign.c

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