Bug#612105: qemu-kvm: hangs and "irq timeout" unless -no-kvm-irqchip passed

[Jonathan Nieder <jrnieder@gmail.com>]

tags 612105 + upstream patch fixed-upstream
quit

Jonathan Nieder wrote:

> When I boot the HURD without passing
> -no-kvm-irqchip on the command line, the system usually will
> print
>
> 	hd2: irq timeout: status=0x50
> 	hd2: irq timeout: status=0x50
> 	hd2: irq timeout: status=0x50
> 	hd2: unexpected_intr: status=0x58
> [and so on]
>
> at boot time and not get past that.  If lucky, the system boots
> up but still hangs (not responding to keyboard input) at seemingly
> random moments.

09493165 (KVM: remove isr_ack logic from PIC, 2011-02-09) which can
be found at

	git://git.kernel.org/pub/scm/virt/kvm/kvm.git master

fixes this for what it's worth.