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Re: [Qemu-devel] [QEMU PATCH v2 0/2]: KVM: i386: Add support for save an
From: |
Jim Mattson |
Subject: |
Re: [Qemu-devel] [QEMU PATCH v2 0/2]: KVM: i386: Add support for save and restore nested state |
Date: |
Fri, 2 Nov 2018 09:44:54 -0700 |
On Fri, Nov 2, 2018 at 5:59 AM, Liran Alon <address@hidden> wrote:
>
>>> Therefore, I don't think that we want this versioning to be based on
>>> KVM_CAP at all.
>>> It seems that we would want the process to behave as follows:
>>> 1) Mgmt-layer at dest queries dest host max supported nested_state size.
>>> (Which should be returned from kvm_check_extension(KVM_CAP_NESTED_STATE))
>>> 2) Mgmt-layer at source initiate migration to dest with requesting QEMU to
>>> send nested_state
>>> matching dest max supported nested_state size.
>>> When saving nested state using KVM_GET_NESTED_STATE IOCTL, QEMU will
>>> specify in nested_state->size
>>> the *requested* size to be saved and KVM should be able to save only the
>>> information which matches
>>> the version that worked with that size.
>>> 3) After some sanity checks on received migration stream, dest host use
>>> KVM_SET_NESTED_STATE IOCTL.
>>> This IOCTL should deduce which information it should deploy based on
>>> given nested_state->size.
I have to object to any proposal which requires the management later
to communicate with the source and the destination to determine what
should be done.
- Re: [Qemu-devel] [QEMU PATCH v2 0/2]: KVM: i386: Add support for save and restore nested state, Dr. David Alan Gilbert, 2018/11/01
- Re: [Qemu-devel] [QEMU PATCH v2 0/2]: KVM: i386: Add support for save and restore nested state, Liran Alon, 2018/11/01
- Re: [Qemu-devel] [QEMU PATCH v2 0/2]: KVM: i386: Add support for save and restore nested state, Dr. David Alan Gilbert, 2018/11/01
- Re: [Qemu-devel] [QEMU PATCH v2 0/2]: KVM: i386: Add support for save and restore nested state, Jim Mattson, 2018/11/01
- Re: [Qemu-devel] [QEMU PATCH v2 0/2]: KVM: i386: Add support for save and restore nested state, Liran Alon, 2018/11/01
- Re: [Qemu-devel] [QEMU PATCH v2 0/2]: KVM: i386: Add support for save and restore nested state, Paolo Bonzini, 2018/11/02
- Re: [Qemu-devel] [QEMU PATCH v2 0/2]: KVM: i386: Add support for save and restore nested state, Dr. David Alan Gilbert, 2018/11/02
- Re: [Qemu-devel] [QEMU PATCH v2 0/2]: KVM: i386: Add support for save and restore nested state, Daniel P . Berrangé, 2018/11/02
- Re: [Qemu-devel] [QEMU PATCH v2 0/2]: KVM: i386: Add support for save and restore nested state, Paolo Bonzini, 2018/11/04
- Re: [Qemu-devel] [QEMU PATCH v2 0/2]: KVM: i386: Add support for save and restore nested state, Liran Alon, 2018/11/02
- Re: [Qemu-devel] [QEMU PATCH v2 0/2]: KVM: i386: Add support for save and restore nested state,
Jim Mattson <=
- Re: [Qemu-devel] [QEMU PATCH v2 0/2]: KVM: i386: Add support for save and restore nested state, Daniel P . Berrangé, 2018/11/02
- Re: [Qemu-devel] [QEMU PATCH v2 0/2]: KVM: i386: Add support for save and restore nested state, Jim Mattson, 2018/11/02
- Re: [Qemu-devel] [QEMU PATCH v2 0/2]: KVM: i386: Add support for save and restore nested state, Daniel P . Berrangé, 2018/11/02
- Re: [Qemu-devel] [QEMU PATCH v2 0/2]: KVM: i386: Add support for save and restore nested state, Dr. David Alan Gilbert, 2018/11/02
- Re: [Qemu-devel] [QEMU PATCH v2 0/2]: KVM: i386: Add support for save and restore nested state, Paolo Bonzini, 2018/11/04
- Re: [Qemu-devel] [QEMU PATCH v2 0/2]: KVM: i386: Add support for save and restore nested state, Daniel P . Berrangé, 2018/11/12
- Re: [Qemu-devel] [QEMU PATCH v2 0/2]: KVM: i386: Add support for save and restore nested state, Dr. David Alan Gilbert, 2018/11/12
- Re: [Qemu-devel] [QEMU PATCH v2 0/2]: KVM: i386: Add support for save and restore nested state, Paolo Bonzini, 2018/11/12
- Re: [Qemu-devel] [QEMU PATCH v2 0/2]: KVM: i386: Add support for save and restore nested state, Daniel P . Berrangé, 2018/11/12
- Re: [Qemu-devel] [QEMU PATCH v2 0/2]: KVM: i386: Add support for save and restore nested state, Liran Alon, 2018/11/12