linux/arch/x86/kvm
Bruce Rogers 4b6486659a KVM: x86: apply kvmclock offset to guest wall clock time
When a guest migrates to a new host, the system time difference from the
previous host is used in the updates to the kvmclock system time visible
to the guest, resulting in a continuation of correct kvmclock based guest
timekeeping.

The wall clock component of the kvmclock provided time is currently not
updated with this same time offset. Since the Linux guest caches the
wall clock based time, this discrepency is not noticed until the guest is
rebooted. After reboot the guest's time calculations are off.

This patch adjusts the wall clock by the kvmclock_offset, resulting in
correct guest time after a reboot.

Cc: Zachary Amsden <zamsden@gmail.com>
Signed-off-by: Bruce Rogers <brogers@suse.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2012-08-01 17:23:50 -03:00
..
cpuid.c KVM: VMX: Implement PCID/INVPCID for guests with EPT 2012-07-12 13:07:34 +03:00
cpuid.h KVM: VMX: Implement PCID/INVPCID for guests with EPT 2012-07-12 13:07:34 +03:00
emulate.c KVM: x86 emulator: implement LTR 2012-07-09 14:19:05 +03:00
i8254.c KVM: x86: Run PIT work in own kthread 2012-04-27 19:40:29 -03:00
i8254.h KVM: x86: Run PIT work in own kthread 2012-04-27 19:40:29 -03:00
i8259.c KVM: PIC: call ack notifiers for irqs that are dropped form irr 2012-07-26 12:19:06 +03:00
irq.c KVM: fix typo in copyright notice 2010-10-24 10:53:14 +02:00
irq.h KVM: Intelligent device lookup on I/O bus 2011-09-25 19:17:59 +03:00
Kconfig KVM: Introduce direct MSI message injection for in-kernel irqchips 2012-04-24 15:59:47 +03:00
kvm_cache_regs.h KVM: MMU: Do not unconditionally read PDPTE from guest memory 2011-09-25 19:18:01 +03:00
kvm_timer.h KVM: emulate lapic tsc deadline timer for guest 2011-10-05 15:34:56 +02:00
lapic.c KVM: host side for eoi optimization 2012-06-25 12:40:55 +03:00
lapic.h KVM: host side for eoi optimization 2012-06-25 12:40:55 +03:00
Makefile KVM: Expose a version 2 architectural PMU to a guests 2011-12-27 11:24:29 +02:00
mmu_audit.c KVM: MMU: Improve iteration through sptes from rmap 2012-04-08 16:08:27 +03:00
mmu.c KVM updates for the 3.6 merge window 2012-07-24 12:01:20 -07:00
mmu.h KVM: MMU: mmio page fault support 2011-07-24 11:50:40 +03:00
mmutrace.h KVM: MMU: fix kvm_mmu_pagetable_walk tracepoint 2012-07-11 16:51:22 +03:00
paging_tmpl.h KVM: MMU: fix kvm_mmu_pagetable_walk tracepoint 2012-07-11 16:51:22 +03:00
pmu.c perf/x86: Rename Intel specific macros 2012-07-05 21:19:39 +02:00
svm.c KVM: VMX: Implement PCID/INVPCID for guests with EPT 2012-07-12 13:07:34 +03:00
timer.c KVM: x86: Simplify kvm timer handler 2011-12-27 11:17:05 +02:00
trace.h KVM updates for the 3.6 merge window 2012-07-24 12:01:20 -07:00
tss.h KVM: x86: hardware task switching support 2008-04-27 12:00:39 +03:00
vmx.c KVM: VMX: Implement PCID/INVPCID for guests with EPT 2012-07-12 13:07:34 +03:00
x86.c KVM: x86: apply kvmclock offset to guest wall clock time 2012-08-01 17:23:50 -03:00
x86.h KVM: x86: add paging gcc optimization 2012-04-08 14:03:13 +03:00