From: Gleb Natapov <gleb@redhat.com>
To: Jan Kiszka <jan.kiszka@siemens.com>
Cc: kvm-devel <kvm@vger.kernel.org>, qemu-devel <qemu-devel@nongnu.org>
Subject: Re: Lost interrupts with upstream KVM
Date: Fri, 29 May 2009 11:26:41 +0300 [thread overview]
Message-ID: <20090529082641.GA28542@redhat.com> (raw)
In-Reply-To: <4A1F9B7C.4020201@siemens.com>
On Fri, May 29, 2009 at 10:23:24AM +0200, Jan Kiszka wrote:
> Hi Gleb,
>
> with latest kernel modules, namely beginning with 6bc0a1a235 (Remove
> irq_pending bitmap), I'm loosing interrupts with upstream's KVM support.
> After some bisecting, hair-pulling and a bit meditation I added a
> WARN_ON(kvm_cpu_has_interrupt(vcpu)) to kvm_vcpu_ioctl_interrupt, and it
> actually triggered right before the guest got stuck.
>
> This didn't trigger with qemu-kvm (and -no-kvm-irqchip) yet but, on the
> other hand, I currently do not see a potential bug in upstream's
> kvm_arch_pre_run. Could you have a look if you can reproduce,
> specifically if this isn't a KVM kernel issue in the end?
>
Will look at it. Thanks.
--
Gleb.
next prev parent reply other threads:[~2009-05-29 8:26 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-29 8:23 Lost interrupts with upstream KVM Jan Kiszka
2009-05-29 8:26 ` Gleb Natapov [this message]
2009-05-29 13:08 ` Gleb Natapov
2009-05-29 14:52 ` Jan Kiszka
2009-05-29 16:20 ` Gleb Natapov
2009-05-29 16:46 ` Jan Kiszka
2009-05-29 16:54 ` Gleb Natapov
2009-05-29 17:01 ` Jan Kiszka
2009-05-29 17:19 ` Gleb Natapov
2009-05-29 17:26 ` Jan Kiszka
2009-05-29 17:31 ` Gleb Natapov
2009-05-29 17:35 ` Jan Kiszka
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