Bug 711546 - RHEL6.1 x86_64 HVM guest crashes on AMD host when guest memory size is larger than 8G
Summary: RHEL6.1 x86_64 HVM guest crashes on AMD host when guest memory size is larger...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: kernel
Version: 6.1
Hardware: Unspecified
OS: Unspecified
urgent
high
Target Milestone: rc
: ---
Assignee: Frantisek Hrbata
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On: 703055
Blocks:
TreeView+ depends on / blocked
 
Reported: 2011-06-07 18:34 UTC by Benjamin Kahn
Modified: 2011-07-12 21:13 UTC (History)
11 users (show)

Fixed In Version: kernel-2.6.32-131.6.1.el6
Doc Type: Bug Fix
Doc Text:
Prior to this update, Red Hat Enterprise Linux Xen (up to version 5.6) did not hide 1 GB pages and RDTSCP (enumeration features of CPUID), causing guest soft lock ups on AMD hosts when the guest's memory was greater than 8 GB. With this update, a Red Hat Enterprise Linux 6 HVM (Hardware Virtual Machine) guest is able to run on Red Hat Enterprise Linux Xen 5.6 and lower.
Clone Of:
Environment:
Last Closed: 2011-07-12 21:13:03 UTC
Target Upstream Version:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2011:0928 0 normal SHIPPED_LIVE Moderate: kernel security and bug fix update 2011-07-12 21:11:55 UTC

Description Benjamin Kahn 2011-06-07 18:34:51 UTC 
This bug has been copied from bug #703055 and has been proposed
to be backported to 6.1 z-stream (EUS).
Comment 6 Jinxin Zheng 2011-06-28 04:27:31 UTC 
Reproduced on kernel-2.6.32-131.4.1.el6: guest crashes with 16G.

Verified on kernel-2.6.32-131.6.1.el6. Tested 8G, 16G, 32G. All passed.
Comment 7 Martin Prpič 2011-07-12 11:36:33 UTC 
    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:
Prior to this update, Red Hat Enterprise Linux Xen (up to version 5.6) did not hide 1 GB pages and RDTSCP (enumeration features of CPUID), causing guest soft lock ups on AMD hosts when the guest's memory was greater than 8 GB. With this update, a Red Hat Enterprise Linux 6 HVM (Hardware Virtual Machine) guest is able to run on Red Hat Enterprise Linux Xen 5.6 and lower.
Comment 8 errata-xmlrpc 2011-07-12 21:13:03 UTC 
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-2011-0928.html
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