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| author | David S. Miller <davem@davemloft.net> | 2014-06-03 23:32:12 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-06-03 23:32:12 -0700 |
| commit | c99f7abf0e69987e4add567e155e042cb1f2a20b (patch) | |
| tree | d23898dc30ed25c1dae9bb6325041027d412397a /arch/x86/kvm/x86.c | |
| parent | 92ff71b8fe9cd9c673615fc6f3870af7376d7c84 (diff) | |
| parent | d8b0426af5b67973585712c9af36b86f6ea97815 (diff) | |
| download | blackbird-op-linux-c99f7abf0e69987e4add567e155e042cb1f2a20b.tar.gz blackbird-op-linux-c99f7abf0e69987e4add567e155e042cb1f2a20b.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
include/net/inetpeer.h
net/ipv6/output_core.c
Changes in net were fixing bugs in code removed in net-next.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/x86/kvm/x86.c')
| -rw-r--r-- | arch/x86/kvm/x86.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index b6c0bacca9bd..20316c67b824 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -106,6 +106,8 @@ EXPORT_SYMBOL_GPL(kvm_max_guest_tsc_khz); static u32 tsc_tolerance_ppm = 250; module_param(tsc_tolerance_ppm, uint, S_IRUGO | S_IWUSR); +static bool backwards_tsc_observed = false; + #define KVM_NR_SHARED_MSRS 16 struct kvm_shared_msrs_global { @@ -1486,7 +1488,8 @@ static void pvclock_update_vm_gtod_copy(struct kvm *kvm) &ka->master_kernel_ns, &ka->master_cycle_now); - ka->use_master_clock = host_tsc_clocksource & vcpus_matched; + ka->use_master_clock = host_tsc_clocksource && vcpus_matched + && !backwards_tsc_observed; if (ka->use_master_clock) atomic_set(&kvm_guest_has_master_clock, 1); @@ -6945,6 +6948,7 @@ int kvm_arch_hardware_enable(void *garbage) */ if (backwards_tsc) { u64 delta_cyc = max_tsc - local_tsc; + backwards_tsc_observed = true; list_for_each_entry(kvm, &vm_list, vm_list) { kvm_for_each_vcpu(i, vcpu, kvm) { vcpu->arch.tsc_offset_adjustment += delta_cyc; |
