Bug 94771 - [Nested kvm on kvm] 32bit win7 guest as L2 guest show blue screen
Summary: [Nested kvm on kvm] 32bit win7 guest as L2 guest show blue screen
Status: NEW
Alias: None
Product: Virtualization
Classification: Unclassified
Component: kvm (show other bugs)
Hardware: All Linux
: P1 normal
Assignee: virtualization_kvm
URL:
Keywords:
Depends on:
Blocks: 94971
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Reported: 2015-03-12 02:13 UTC by Zhou, Chao
Modified: 2015-03-17 04:53 UTC (History)
0 users

See Also:
Kernel Version: 4.0.0-rc1
Subsystem:
Regression: No
Bisected commit-id:

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Description Zhou, Chao 2015-03-12 02:13:36 UTC 
Environment:
------------
Host OS (ia32/ia32e/IA64):ia32e
Guest OS (ia32/ia32e/IA64):ia32
Guest OS Type (Linux/Windows):Windows
kvm.git Commit:4ff6f8e61eb7f96d3ca535c6d240f863ccd6fb7d
qemu.kvm Commit:d598911b6f5e7bf7bafb63b8e1d074729e94aca7
Host Kernel Version: 4.0.0-rc1
Hardware:Ivytown_EP, Haswell_EP


Bug detailed description:
--------------------------
create 32bit win7 guest as L2 guest, the guest will show blue screen.

note:
create 32bit win8 or 32bit win8.1  as L2 guest, the guest boots up fine.


Reproduce steps:
----------------
1 create L1 guest:
 qemu-system-x86_64 -enable-kvm -m 8G -smp 4 -net nic,macaddr=00:12:31:34:51:31 -net tap,script=/etc/kvm/qemu-ifup nested-kvm.qcow -cpu host

2. create L2 guest
qemu-system-x86_64 -enable-kvm -m 2G -smp 2 -net none win7-32.qcow

Current result:
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32bit win7 as L2 guest boots up fail

Expected result:
----------------
32bit win7 as L2 guest boots up fine

Basic root-causing log:
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