[Bug 53651] New: nVMX: L1 crashes with no-kvm-irqchip

[Bug 53651] New: nVMX: L1 crashes with no-kvm-irqchip

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=53651

           Summary: nVMX: L1 crashes with no-kvm-irqchip
           Product: Virtualization
           Version: unspecified
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: kvm
        AssignedTo: virtualization_kvm@kernel-bugs.osdl.org
        ReportedBy: nyh@math.technion.ac.il
        Regression: No


Steffen Evers reported that "We are using qemu-kvm with nested virtualisation
(two guest levels). The 1st-level guest sporadicly crashes on start-up of 2nd
level guest (in BIOS). We have now found out that it always crashes with
parameter "no-kvm-irqchip" set.".
The L1 crash is because of "KVM: entry failed, hardware error 0x80000021".

See the full details in this thread:
http://comments.gmane.org/gmane.comp.emulators.kvm.devel/79054

I didn't try to verify this myself.

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[Bug 53651] nVMX: L1 crashes with no-kvm-irqchip

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=53651


Nadav Har'El <nyh@math.technion.ac.il> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Blocks|                            |53601




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[Bug 53651] nVMX: L1 crashes with no-kvm-irqchip

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=53651

Bandan Das <bsd@makefile.in> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Blocks|                            |94971

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[Bug 53651] nVMX: L1 crashes with no-kvm-irqchip

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=53651

Jan Kiszka <jan.kiszka@web.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jan.kiszka@web.de

--- Comment #1 from Jan Kiszka <jan.kiszka@web.de> ---
Steffen once did these tests for me. They were done on a now very old software
stack, I no longer remember the precise details nor could I reproduce the same
scenario. I can just confirm that I'm running nested with -no-kvm-irqchip
regularly on a - granted - more modern host without problems. Therefore, I
would suggest to close this issue.

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