#491 "-cpu host" Blue-Screens M$ Guests

[Martin Gallant]

On my 64-bit AMD host, whenever I start a Windows guest machine with the "-cpu host" flag set, the guest blue-screens during startup.
I have reproduced this with 32-bit vista, 32-bit W7, and 64-bit W7 boot disks.
Everything is fine with the "-cpu host" flag removed - I have been running this setup since the beginning of 2009.

CPU - AMD 64 x2 (/proc/cpuinfo attached)
Userspace - qemu-kvm-0.11.0
Kernel - v2.6.31.5 (amd64)
Invocations - attached
Problem persists with -no-kvm-irqchip or -no-kvm-pit switch
With "-no-kvm", invocation returns "Unable to find x86 CPU definition"

I keep up-to-date git trees for the kernel and kvm userspace - Will gladly test patches

[Martin Gallant]

[Martin Gallant]

[Jes Sorensen]

Hi Martin,

Are you still able to reproduce this problem with recent KVM/QEMU?

If you can, what does /proc/cpuinfo look like if you boot Linux with -cpu host

Thanks,
Jes