From: Avi Kivity <avi@redhat.com>
To: kvm@vger.kernel.org
Subject: Re: [RFC][PATCH] Add support for the GUEST_SMBASE VMCS field for Intel VT-x.
Date: Wed, 06 Jun 2012 10:55:37 +0300 [thread overview]
Message-ID: <4FCF0CF9.1010102@redhat.com> (raw)
In-Reply-To: <20120605182759.GA23670@rhea>
On 06/05/2012 09:27 PM, Matthias Lange wrote:
> On Tue, Jun 05, 2012 at 04:09:30PM +0300, Avi Kivity wrote:
>> On 06/05/2012 02:59 PM, Matthias Lange wrote:
>> > Do you mean the ABI defined in the Intel Software Developer's manual 3B? Or is
>> > vmcs12 only an ABI internal to the kvm module?
>>
>> The latter. We want to be able to live migrate a guest with nested
>> guests, and if the format of vmcs12 changes, the migration will break.
>
> I'm trying to understand how the migration is implemented in kvm. Can you
> point me to some sort of documentation or pieces of code where I can start
> digging through the mechanism?
>From kvm's point of view, it's just KVM_GET_REGS (and KVM_GET_SREGS,
etc.) from the source, followed by KVM_SET_REGS (etc.) on the target.
KVM_GET_DIRTY_LOG makes the migration live.
--
error compiling committee.c: too many arguments to function
prev parent reply other threads:[~2012-06-06 7:55 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-18 9:34 [RFC][PATCH] Add support for the GUEST_SMBASE VMCS field for Intel VT-x Matthias Lange
2012-05-20 12:39 ` Avi Kivity
2012-06-05 11:59 ` Matthias Lange
2012-06-05 13:09 ` Avi Kivity
2012-06-05 18:27 ` Matthias Lange
2012-06-06 7:55 ` Avi Kivity [this message]
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