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Bug 647307 - (PCISlowMapping) Support slow mapping of PCI Bars
Support slow mapping of PCI Bars
Status: CLOSED ERRATA
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: qemu-kvm (Show other bugs)
6.1
x86_64 Linux
high Severity medium
: rc
: ---
Assigned To: Alex Williamson
Virtualization Bugs
:
: 679386 (view as bug list)
Depends On:
Blocks: 580954
  Show dependency tree / graph
 
Reported: 2010-10-27 16:39 EDT by Glauber Costa
Modified: 2011-05-19 08:49 EDT (History)
6 users (show)

See Also:
Fixed In Version: qemu-kvm-0.12.1.2-2.119.el6
Doc Type: Bug Fix
Doc Text:
KVM device assignment: Added support for devices making use of sub-4k MMIO PCI BARs.
Story Points: ---
Clone Of:
Environment:
Last Closed: 2011-05-19 07:23:37 EDT
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
CRM:
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2011:0534 normal SHIPPED_LIVE Important: qemu-kvm security, bug fix, and enhancement update 2011-05-19 07:20:36 EDT

  None (edit)
Description Glauber Costa 2010-10-27 16:39:36 EDT 
If we are mapping BARs that are smaller than 4k, we can't mmap it into memory.
For those cases, we would like to be able to have the option to use read/write abstraction instead.

Work to support it is already upstream (qemu-kvm.git), at commits:

8845b723
d79e4458
be5a9efb
c890e259
Comment 10 Alex Williamson 2011-02-22 10:08:00 EST 
*** Bug 679386 has been marked as a duplicate of this bug. ***
Comment 11 Alex Williamson 2011-03-09 13:48:37 EST 
    Technical note added. If any revisions are required, please edit the "Technical Notes" field
    accordingly. All revisions will be proofread by the Engineering Content Services team.
    
    New Contents:
KVM device assignment: Added support for devices making use of sub-4k MMIO PCI BARs.
Comment 12 errata-xmlrpc 2011-05-19 07:23:37 EDT 
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2011-0534.html
Comment 13 errata-xmlrpc 2011-05-19 08:49:43 EDT 
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2011-0534.html
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