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Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings
From: |
Roedel, Joerg |
Subject: |
Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings |
Date: |
Wed, 24 Aug 2011 11:14:26 +0200 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Tue, Aug 23, 2011 at 12:54:27PM -0400, aafabbri wrote:
> On 8/23/11 4:04 AM, "Joerg Roedel" <address@hidden> wrote:
> > That is makes uiommu basically the same as the meta-groups, right?
>
> Yes, functionality seems the same, thus my suggestion to keep uiommu
> explicit. Is there some need for group-groups besides defining sets of
> groups which share IOMMU resources?
>
> I do all this stuff (bringing up sets of devices which may share IOMMU
> domain) dynamically from C applications. I don't really want some static
> (boot-time or sysfs fiddling) supergroup config unless there is a good
> reason KVM/power needs it.
>
> As you say in your next email, doing it all from ioctls is very easy,
> programmatically.
I don't see a reason to make this meta-grouping static. It would harm
flexibility on x86. I think it makes things easier on power but there
are options on that platform to get the dynamic solution too.
Joerg
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- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, (continued)
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, Alex Williamson, 2011/08/24
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, Roedel, Joerg, 2011/08/25
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, Don Dutile, 2011/08/25
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, Roedel, Joerg, 2011/08/25
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, Alex Williamson, 2011/08/25
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, Joerg Roedel, 2011/08/25
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, Alex Williamson, 2011/08/26
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, Joerg Roedel, 2011/08/30
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, Joerg Roedel, 2011/08/23
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, aafabbri, 2011/08/23
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings,
Roedel, Joerg <=
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, David Gibson, 2011/08/24
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, Roedel, Joerg, 2011/08/24
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, David Gibson, 2011/08/26
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, Roedel, Joerg, 2011/08/26
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, Alexander Graf, 2011/08/26
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, Joerg Roedel, 2011/08/26
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, Alexander Graf, 2011/08/26
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, Aaron Fabbri, 2011/08/26
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, Chris Wright, 2011/08/26
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, Aaron Fabbri, 2011/08/26