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Bug 1230131 - RFE: Support multiple PCI root buses
Summary: RFE: Support multiple PCI root buses
Keywords:
Status: CLOSED DUPLICATE of bug 1103314
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: libvirt
Version: 7.2
Hardware: Unspecified
OS: Unspecified
unspecified
high
Target Milestone: rc
: ---
Assignee: Libvirt Maintainers
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2015-06-10 10:14 UTC by Marcel Apfelbaum
Modified: 2015-06-10 10:18 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2015-06-10 10:18:16 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)

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 ***
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