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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: |
Mon, 22 Aug 2011 14:55:02 +0200 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Mon, Aug 22, 2011 at 08:42:35AM -0400, Avi Kivity wrote:
> On 08/22/2011 03:36 PM, Roedel, Joerg wrote:
> > On the AMD IOMMU side this information is stored in the IVRS ACPI table.
> > Not sure about the VT-d side, though.
>
> I see. There is no sysfs node representing it?
No. It also doesn't exist as a 'struct pci_dev'. This caused problems in
the AMD IOMMU driver in the past and I needed to fix that. There I know
that from :)
> I'd rather not add another meaningless identifier.
Well, I don't think its really meaningless, but we need some way to
communicate the information about device groups to userspace.
Joerg
--
AMD Operating System Research Center
Advanced Micro Devices GmbH Einsteinring 24 85609 Dornach
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Registration: Dornach, Landkr. Muenchen; Registerger. Muenchen, HRB Nr. 43632
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, (continued)
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, Roedel, Joerg, 2011/08/25
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, David Gibson, 2011/08/22
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, Alex Williamson, 2011/08/23
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, Benjamin Herrenschmidt, 2011/08/23
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, Alexander Graf, 2011/08/23
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, Avi Kivity, 2011/08/22
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, Joerg Roedel, 2011/08/22
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, Avi Kivity, 2011/08/22
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, Roedel, Joerg, 2011/08/22
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, Avi Kivity, 2011/08/22
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings,
Roedel, Joerg <=
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, Avi Kivity, 2011/08/22
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, Roedel, Joerg, 2011/08/22
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, Avi Kivity, 2011/08/22
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, Roedel, Joerg, 2011/08/22
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, Benjamin Herrenschmidt, 2011/08/22
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, Joerg Roedel, 2011/08/22
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, Alex Williamson, 2011/08/22
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, Roedel, Joerg, 2011/08/23
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, Alex Williamson, 2011/08/23
- Re: [Qemu-devel] kvm PCI assignment & VFIO ramblings, Roedel, Joerg, 2011/08/24