From: Paolo Bonzini <pbonzini@redhat.com>
To: "Dr. David Alan Gilbert" <dgilbert@redhat.com>,
Antoine Damhet <antoine.damhet@blade-group.com>,
vkuznets@redhat.com
Cc: Juan Quintela <quintela@redhat.com>,
qemu-devel@nongnu.org, "Michael S. Tsirkin" <mst@redhat.com>
Subject: Re: [BUG] Migration hv_time rollback
Date: Wed, 16 Sep 2020 15:05:40 +0200 [thread overview]
Message-ID: <37b1b2b7-40f5-d0b1-2709-df9fe24fc65f@redhat.com> (raw)
In-Reply-To: <20200916112956.GE2833@work-vm>
On 16/09/20 13:29, Dr. David Alan Gilbert wrote:
>> I have tracked the bug to the fact that `kvmclock` is not exposed and
>> disabled from qemu PoV but is in fact used by `hv-time` (in KVM).
>>
>> I think we should enable the `kvmclock` (qemu device) if `hv-time` is
>> present and add Hyper-V support for the `kvmclock_current_nsec`
>> function.
Yes, this seems correct. I would have to check but it may even be
better to _always_ send kvmclock data in the live migration stream.
Paolo
next prev parent reply other threads:[~2020-09-16 13:06 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-16 9:06 [BUG] Migration hv_time rollback Antoine Damhet
2020-09-16 11:29 ` Dr. David Alan Gilbert
2020-09-16 11:59 ` Vitaly Kuznetsov
2020-09-16 12:14 ` Antoine Damhet
2020-09-16 11:59 ` Antoine Damhet
2020-09-16 12:16 ` Vitaly Kuznetsov
2020-09-16 12:50 ` Vitaly Kuznetsov
2020-09-16 13:25 ` Antoine Damhet
2020-09-16 13:05 ` Paolo Bonzini [this message]
2020-09-16 13:17 ` Vitaly Kuznetsov
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