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Re: [Qemu-devel] [PATCH] [RFC] Add machine type pc-1.0-qemu-kvm for live
From: |
Paolo Bonzini |
Subject: |
Re: [Qemu-devel] [PATCH] [RFC] Add machine type pc-1.0-qemu-kvm for live migrate compatibility with qemu-kvm |
Date: |
Tue, 29 Jul 2014 16:00:38 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 |
Il 29/07/2014 15:56, Alex Bligh ha scritto:
>
> On 29 Jul 2014, at 14:42, Paolo Bonzini <address@hidden> wrote:
>
>> Il 29/07/2014 15:39, Alex Bligh ha scritto:
>>>>> I'm not sure either. You could simply package the 12.04 ipxe ROMs into
>>>>> 14.04, and add a note about getting the sources for GPL friendliness.
>>> This would be my preference (or in Ubuntu's case, add it to the ipxe-qemu
>>> package) but I think it should only be used when the legacy machine type
>>> is used or it will break inbound migrations from other 14.04 machines
>>> started with 128k ROMs (AIUI).
>>
>> "-M pc" and its alias "-M pc-i440fx-2.0" doesn't use pxe-virtio.rom at
>> all (at least upstream).
>
> Really? How does it pxeboot on virtio then (it definitely does pxeboot
> on virtio)?
efi-virtio.rom contains both BIOS and UEFI ROMs.
>> Does Ubuntu 14.04 have efi-virtio.rom?
>
> Yes. After 2 layers of symlinks you get to.
>
> address@hidden:~$ ls -la /usr/lib/ipxe/qemu/efi-virtio.rom
> -rw-r--r-- 1 root root 220672 Jan 6 2014 /usr/lib/ipxe/qemu/efi-virtio.rom
>
>> It would break "-M pc-1.0" started on older 14.04, but I think that's
>> acceptable.
>
> I was more worried about any previous versions of Ubuntu (newer than
> 12.04) which might also be using the larger rom size. But then I
> haven't investigated at what stage the rom size grew.
You're right, but in Serge's shoes I wouldn't bother about anything
except LTS.
Paolo
- Re: [Qemu-devel] [PATCH] [RFC] Add machine type pc-1.0-qemu-kvm for live migrate compatibility with qemu-kvm, (continued)
- Re: [Qemu-devel] [PATCH] [RFC] Add machine type pc-1.0-qemu-kvm for live migrate compatibility with qemu-kvm, Serge Hallyn, 2014/07/29
- Re: [Qemu-devel] [PATCH] [RFC] Add machine type pc-1.0-qemu-kvm for live migrate compatibility with qemu-kvm, Alex Bligh, 2014/07/29
- Re: [Qemu-devel] [PATCH] [RFC] Add machine type pc-1.0-qemu-kvm for live migrate compatibility with qemu-kvm, Serge E. Hallyn, 2014/07/29
- Re: [Qemu-devel] [PATCH] [RFC] Add machine type pc-1.0-qemu-kvm for live migrate compatibility with qemu-kvm, Alex Bligh, 2014/07/29
- Re: [Qemu-devel] [PATCH] [RFC] Add machine type pc-1.0-qemu-kvm for live migrate compatibility with qemu-kvm, Paolo Bonzini, 2014/07/29
- Re: [Qemu-devel] [PATCH] [RFC] Add machine type pc-1.0-qemu-kvm for live migrate compatibility with qemu-kvm, Serge Hallyn, 2014/07/29
- Re: [Qemu-devel] [PATCH] [RFC] Add machine type pc-1.0-qemu-kvm for live migrate compatibility with qemu-kvm, Paolo Bonzini, 2014/07/29
- Re: [Qemu-devel] [PATCH] [RFC] Add machine type pc-1.0-qemu-kvm for live migrate compatibility with qemu-kvm, Alex Bligh, 2014/07/29
- Re: [Qemu-devel] [PATCH] [RFC] Add machine type pc-1.0-qemu-kvm for live migrate compatibility with qemu-kvm, Paolo Bonzini, 2014/07/29
- Re: [Qemu-devel] [PATCH] [RFC] Add machine type pc-1.0-qemu-kvm for live migrate compatibility with qemu-kvm, Alex Bligh, 2014/07/29
- Re: [Qemu-devel] [PATCH] [RFC] Add machine type pc-1.0-qemu-kvm for live migrate compatibility with qemu-kvm,
Paolo Bonzini <=
- Re: [Qemu-devel] [PATCH] [RFC] Add machine type pc-1.0-qemu-kvm for live migrate compatibility with qemu-kvm, Alex Bligh, 2014/07/29
- Re: [Qemu-devel] [PATCH] [RFC] Add machine type pc-1.0-qemu-kvm for live migrate compatibility with qemu-kvm, Serge Hallyn, 2014/07/29
- Re: [Qemu-devel] [PATCH] [RFC] Add machine type pc-1.0-qemu-kvm for live migrate compatibility with qemu-kvm, Alex Bligh, 2014/07/29
- Re: [Qemu-devel] [PATCH] [RFC] Add machine type pc-1.0-qemu-kvm for live migrate compatibility with qemu-kvm, Serge Hallyn, 2014/07/29