From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 42779] New: KVM domain hangs after loading initrd with Xenomai
kernel
Date: Thu, 16 Feb 2012 05:45:29 GMT
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Summary: KVM domain hangs after loading initrd with Xenomai
kernel
Product: Virtualization
Version: unspecified
Kernel Version: 3.0.0-15
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: kvm
AssignedTo: virtualization_kvm@kernel-bugs.osdl.org
ReportedBy: madengineer10@gmail.com
Regression: No
Attempting to boot a 32 bit Debian guest with a Xenomai kernel inside KVM
causes it to hang and spin (using 1 full CPU core) after loading the initrd, as
determined by serial console output. The only error message is "KVM internal
error. Suberror: 1"/"emulation failure". Booting a regular Debian kernel
succeeds, as does running the Xenomai kernel with software emulation (-no-kvm).
Info:
CPU: Intel Core i7-2670QM
Emulator: qemu-kvm 0.14.1
Host kernel: 3.0.0-15 (Ubuntu build), x86_64
Guest OS: Debian Squeeze, kernel.org 2.6.37 kernel with Xenomai 2.6.0 (config
attached)
Qemu command: kvm -M pc-0.14 -enable-kvm -m 1024 -drive
file=/var/lib/libvirt/images/eve.img,if=none,id=drive-ide0-0-0,format=raw
-device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 -netdev
tap,fd=21,id=hostnet0 -device
e1000,netdev=hostnet0,id=net0,mac=52:54:00:b5:f4:00,bus=pci.0,addr=0x3 -chardev
stdio,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -usb
-device usb-tablet,id=input0 -vga cirrus
Effects of flags: Adding one or both of --no-kvm-irqchip or --no-kvm-pit has no
apparent effect. Adding --no-kvm appears to correct the problem, at the cost of
performance due to using the software emulator.
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