[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-ppc] [libvirt] [RFC PATCH qemu] spapr_pci: Create PCI-express
From: |
Eric Blake |
Subject: |
Re: [Qemu-ppc] [libvirt] [RFC PATCH qemu] spapr_pci: Create PCI-express root bus by default |
Date: |
Tue, 22 Nov 2016 08:07:20 -0600 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.4.0 |
On 11/21/2016 07:08 AM, Andrea Bolognani wrote:
>> If libvirt is using a specific version of pseries, then it already knows
>> that <=2.7 has pci.0 as a root, pcie.0 otherwise. libvirt has a knowledge
>> what QEMU version has what, right?
>
> It doesn't yet, that's the point :)
>
> We *could* add such knowledge to libvirt[1], but *existing*
> libvirt versions would still not know about it, which means
> that upgrading QEMU withough upgrading libvirt will result
> in failure to create new guests.
But that's okay. In general, we try to promise that:
old qemu + old libvirt works
new qemu + new libvirt works
old qemu + new libvirt works
new qemu + old libvirt is untested, and may require a libvirt upgrade
In other words, as long as you update your stack from top down (libvirt
before qemu), you should be fine.
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
signature.asc
Description: OpenPGP digital signature
- Re: [Qemu-ppc] [RFC PATCH qemu] spapr_pci: Create PCI-express root bus by default, Andrea Bolognani, 2016/11/15
- Re: [Qemu-ppc] [RFC PATCH qemu] spapr_pci: Create PCI-express root bus by default, Alexey Kardashevskiy, 2016/11/16
- Re: [Qemu-ppc] [RFC PATCH qemu] spapr_pci: Create PCI-express root bus by default, Andrea Bolognani, 2016/11/18
- Re: [Qemu-ppc] [RFC PATCH qemu] spapr_pci: Create PCI-express root bus by default, Alexey Kardashevskiy, 2016/11/20
- Re: [Qemu-ppc] [RFC PATCH qemu] spapr_pci: Create PCI-express root bus by default, Andrea Bolognani, 2016/11/21
- Re: [Qemu-ppc] [RFC PATCH qemu] spapr_pci: Create PCI-express root bus by default, Alexey Kardashevskiy, 2016/11/21
- Re: [Qemu-ppc] [RFC PATCH qemu] spapr_pci: Create PCI-express root bus by default, David Gibson, 2016/11/23
- Re: [Qemu-ppc] [RFC PATCH qemu] spapr_pci: Create PCI-express root bus by default, Andrea Bolognani, 2016/11/25
- Re: [Qemu-ppc] [libvirt] [RFC PATCH qemu] spapr_pci: Create PCI-express root bus by default,
Eric Blake <=
- Re: [Qemu-ppc] [RFC PATCH qemu] spapr_pci: Create PCI-express root bus by default, David Gibson, 2016/11/23
- Re: [Qemu-ppc] [RFC PATCH qemu] spapr_pci: Create PCI-express root bus by default, Andrea Bolognani, 2016/11/25
Re: [Qemu-ppc] [RFC PATCH qemu] spapr_pci: Create PCI-express root bus by default, David Gibson, 2016/11/18