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Old 02-17-2011, 06:26 AM
Jonathan Nieder
 
Default Bug#612105: qemu-kvm: hangs and "irq timeout" unless -no-kvm-irqchip passed

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.



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Old 03-24-2011, 09:40 AM
Jonathan Nieder
 
Default Bug#612105: qemu-kvm: hangs and "irq timeout" unless -no-kvm-irqchip passed

Hi,

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]

Fix (for the KVM host) merged to linus's master as part of
kvm-updates/2.6.39, as a commit named 7049467b (KVM: remove isr_ack
logic from PIC, 2011-02-09).

So v2.6.39 will fix this.

Hope that helps,
Jonathan



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Old 03-24-2011, 09:55 AM
Samuel Thibault
 
Default Bug#612105: qemu-kvm: hangs and "irq timeout" unless -no-kvm-irqchip passed

Hello,

Jonathan Nieder, le Thu 24 Mar 2011 05:40:34 -0500, a écrit :
> 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]
>
> Fix (for the KVM host) merged to linus's master as part of
> kvm-updates/2.6.39, as a commit named 7049467b (KVM: remove isr_ack
> logic from PIC, 2011-02-09).
>
> So v2.6.39 will fix this.

Great! Thanks for the notice! Do you happen to know which version the
bug was introduced it?

> Hope that helps,

Sure!

Samuel



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Old 03-24-2011, 09:58 AM
Jonathan Nieder
 
Default Bug#612105: qemu-kvm: hangs and "irq timeout" unless -no-kvm-irqchip passed

Samuel Thibault wrote:
> Jonathan Nieder, le Thu 24 Mar 2011 05:40:34 -0500, a écrit :

>> So v2.6.39 will fix this.
>
> Great! Thanks for the notice! Do you happen to know which version the
> bug was introduced it?

Yes, it bisects to v2.6.37-rc1~142^2~39 (KVM: Check for pending events
before attempting injection, 2010-07-27). The thread starting at [1]
has details.

Regards,
Jonathan

[1] http://thread.gmane.org/gmane.comp.emulators.kvm.devel/58669/focus=67483



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Old 03-24-2011, 11:15 AM
Samuel Thibault
 
Default Bug#612105: qemu-kvm: hangs and "irq timeout" unless -no-kvm-irqchip passed

Jonathan Nieder, le Thu 24 Mar 2011 05:58:47 -0500, a écrit :
> [1] http://thread.gmane.org/gmane.comp.emulators.kvm.devel/58669/focus=67483

Cool! Thanks for having handled this.

Samuel



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