New: nVMX: Windows as L2 guest doesn't work
https://bugzilla.kernel.org/show_bug.cgi?id=53641
Summary: nVMX: Windows as L2 guest doesn't work
Product: Virtualization
Version: unspecified
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: kvm
AssignedTo: [email protected]
ReportedBy: [email protected]
Regression: No
While Linux works fine as nested guests (L2), Windows of various versions do not - which is of course a serious downside of KVM's nested VMX.
I verified this myself - seeing Windows 2000 hang on boot. It was also reported by others and is not specific to Windows 2000, e.g. the following reports by Gianluca Cecchi:
http://lists.fedoraproject.org/pipermail/virt/2011-June/002702.html
http://lists.fedoraproject.org/pipermail/virt/2011-November/002959.html
http://comments.gmane.org/gmane.comp.emulators.kvm.devel/82131
At some point during our research prototype, Windows L2 guests *did* work (including Windows 2000), so it's probably not a big problem, but rather some sneaky bug.
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[Bug 53641] nVMX: Windows as L2 guest doesn't work
https://bugzilla.kernel.org/show_bug.cgi?id=53641
Nadav Har'El <[email protected]> changed:
What |Removed |Added
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Blocks| |53601
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[Bug 53641] nVMX: Windows as L2 guest doesn't work
In reply to [email protected]https://bugzilla.kernel.org/show_bug.cgi?id=53641
bornlibra23 <[email protected]> changed:
What |Removed |Added
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CC| |[email protected]
--- Comment #1 from bornlibra23 <[email protected]> --- Working on this bug while doing comparative analysis of Linux vs Windows as L2 guest I realized that by forcing addition of PAE & MCA flags in Xen configuration file I saw the boot animation which was previously not being displayed.
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[Bug 53641] nVMX: Windows as L2 guest doesn't work
In reply to [email protected]https://bugzilla.kernel.org/show_bug.cgi?id=53641
Bandan Das <[email protected]> changed:
What |Removed |Added
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Blocks| |94971
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