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Bug 1230131

Summary: RFE: Support multiple PCI root buses
Product: Red Hat Enterprise Linux 7 Reporter: Marcel Apfelbaum <marcel>
Component: libvirtAssignee: Libvirt Maintainers <libvirt-maint>
Status: CLOSED DUPLICATE QA Contact: Virtualization Bugs <virt-bugs>
Severity: high Docs Contact:
Priority: unspecified    
Version: 7.2CC: rbalakri
Target Milestone: rc   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2015-06-10 10:18:16 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Marcel Apfelbaum 2015-06-10 10:14:28 UTC
Description of problem:
We need to support multiple NUMA nodes for pass-through devices.Operating systems can attach only a PCI root bus to a NUMA node.

SeaBIOS/QEMU support for multiple PCI root buses is already on the mailing lists, and we may need to support this also in libvirt.

Basically a new PCI device called PXB was added to QEMU. Command line arguments
can be found in  QEMU git under docs/pci_expander_bridge.txt.

Please feel free to contact me with any questions.

Comment 1 Marcel Apfelbaum 2015-06-10 10:18:16 UTC
Sorry, we already have an open BZ for this: 1103314

*** This bug has been marked as a duplicate of bug 1103314 ***