Bug 1290150 - Include example kvm.conf with nested options commented out
Include example kvm.conf with nested options commented out
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: qemu-kvm-rhev (Show other bugs)
Unspecified Unspecified
unspecified Severity unspecified
: rc
: ---
Assigned To: Bandan Das
Depends On:
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Reported: 2015-12-09 13:35 EST by Karen Noel
Modified: 2016-11-07 16:45 EST (History)
10 users (show)

See Also:
Fixed In Version: qemu-kvm-rhev-2.6.0-10.el7
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2016-11-07 16:45:40 EST
Type: Bug
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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Description Karen Noel 2015-12-09 13:35:46 EST

(Description from Paolo)

> After the "modprobe nested=1" it would be useful to explain that it only
> enables nesting until next reboot.  Enable it forever requires adding
> something like
> 	options kvm_intel nested=1
> 	options kvm_amd nested=1
> to /etc/modprobe.d/kvm.conf (can use one file for both Intel and AMD).
> We probably should distribute such a file (with the options commented
> out) as part of the qemu-kvm package


Customers trying nested KVM (tech preview) will have an example of how to enable nested permanently.
Comment 1 Miroslav Rezanina 2016-06-28 08:59:47 EDT
Fix included in qemu-kvm-rhev-2.6.0-10.el7
Comment 3 FuXiangChun 2016-09-01 04:21:14 EDT
Verified this bug with qemu-kvm-rhev-2.6.0-22.el7.x86_64

1.Enable nested via kvm.conf

# cat /etc/modprobe.d/kvm.conf 
# Setting modprobe kvm_intel/kvm_amd nested = 1
# only enables Nested Virtualization until the next reboot or
# module reload. Uncomment the option applicable
# to your system below to enable the feature permanently.
# User changes in this file are preserved across upgrades.
# For Intel
options kvm_intel nested=1
# For AMD
#options kvm_amd nested=1

2. reboot host

3. confirm nested if it is enabled

# cat /sys/module/kvm_intel/parameters/nested 

For AMD machine.  It is the same result with Intel machine. 

So, Base on this testing result. This bug is fixed.
Comment 5 errata-xmlrpc 2016-11-07 16:45:40 EST
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.


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