Am 05.06.2010 um 03:34 schrieb Faidon Liambotis:
> Hi,
>
> Peter Lieven wrote:
>> i was looking for a generic way to disable it in the hypervisor
>> without the need to touch every guests kernel commandline.
>> this would be easy revertible once its all working as expected.
> This is a huge hack but for the same reason I've made an LD_PRELOAD
> wrapper that wraps ioctl masking the hsot kernel's kvmclock feature from
> userspace kvm. I'll be happy to share it if you're interested.
i would be grateful if you can sent it to me offlist. however, i came up with this hack,
that seems to work also:
diff -ur qemu-kvm-0.12.4.orig/qemu-kvm-x86.c qemu-kvm-0.12.4/qemu-kvm-x86.c
--- qemu-kvm-0.12.4.orig/qemu-kvm-x86.c 2010-05-09 13:05:19.000000000 +0200
+++ qemu-kvm-0.12.4/qemu-kvm-x86.c 2010-06-02 18:18:53.000000000 +0200
@@ -1240,7 +1240,7 @@
int feature;
} para_features[] = {
#ifdef KVM_CAP_CLOCKSOURCE
- { KVM_CAP_CLOCKSOURCE, KVM_FEATURE_CLOCKSOURCE },
+// { KVM_CAP_CLOCKSOURCE, KVM_FEATURE_CLOCKSOURCE },
#endif
#ifdef KVM_CAP_NOP_IO_DELAY
{ KVM_CAP_NOP_IO_DELAY, KVM_FEATURE_NOP_IO_DELAY },
>
> Works like a charm, migration has worken reliably with qemu-kvm 0.11.3 +
> the wrapper.
>
> Regards,
> Faidon
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