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| author | David Hildenbrand | 2015-10-29 10:30:36 +0100 |
|---|---|---|
| committer | Christian Borntraeger | 2016-06-21 09:43:46 +0200 |
| commit | 91473b487dd58af6384c5c3db13de50defa2c106 (patch) | |
| tree | da99d623f00f1786619141a2e82b48b182187c18 /arch/s390/kvm/kvm-s390.c | |
| parent | KVM: s390: vsie: speed up VCPU external calls (diff) | |
| download | kernel-qcow2-linux-91473b487dd58af6384c5c3db13de50defa2c106.tar.gz kernel-qcow2-linux-91473b487dd58af6384c5c3db13de50defa2c106.tar.xz kernel-qcow2-linux-91473b487dd58af6384c5c3db13de50defa2c106.zip | |
KVM: s390: vsie: correctly set and handle guest TOD
Guest 2 sets up the epoch of guest 3 from his point of view. Therefore,
we have to add the guest 2 epoch to the guest 3 epoch. We also have to take
care of guest 2 epoch changes on STP syncs. This will work just fine by
also updating the guest 3 epoch when a vsie_block has been set for a VCPU.
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/kvm/kvm-s390.c')
| -rw-r--r-- | arch/s390/kvm/kvm-s390.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 8ba7a98a50cf..6fdf1f7647d7 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -176,6 +176,8 @@ static int kvm_clock_sync(struct notifier_block *notifier, unsigned long val, vcpu->arch.sie_block->epoch -= *delta; if (vcpu->arch.cputm_enabled) vcpu->arch.cputm_start += *delta; + if (vcpu->arch.vsie_block) + vcpu->arch.vsie_block->epoch -= *delta; } } return NOTIFY_OK; |