From: Marcelo Tosatti <mtosatti@redhat.com>
To: Alex Williamson <alex.williamson@redhat.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>,
Gleb Natapov <gleb@redhat.com>,
avi@redhat.com, kvm@vger.kernel.org,
linux-kernel@vger.kernel.org, jan.kiszka@siemens.com
Subject: Re: [PATCH v5 1/4] kvm: Extend irqfd to support level interrupts
Date: Wed, 18 Jul 2012 18:23:34 -0300 [thread overview]
Message-ID: <20120718212334.GA20327@amt.cnet> (raw)
In-Reply-To: <1342643314.2229.217.camel@bling.home>
On Wed, Jul 18, 2012 at 02:28:34PM -0600, Alex Williamson wrote:
> > turn on lockdep to remember why I couldn't sleep there.
>
> switching to a mutex results in:
>
> BUG: sleeping function called from invalid context at kernel/mutex.c:269
> in_atomic(): 1, irqs_disabled(): 0, pid: 30025, name: qemu-system-x86
> INFO: lockdep is turned off.
> Pid: 30025, comm: qemu-system-x86 Not tainted 3.5.0-rc4+ #109
> Call Trace:
> [<ffffffff81088425>] __might_sleep+0xf5/0x130
> [<ffffffff81564c6f>] mutex_lock_nested+0x2f/0x60
> [<ffffffffa07db7d5>] eoifd_event+0x25/0x70 [kvm]
> [<ffffffffa07daea4>] kvm_notify_acked_irq+0xa4/0x140 [kvm]
> [<ffffffffa07dae2a>] ? kvm_notify_acked_irq+0x2a/0x140 [kvm]
> [<ffffffffa07d9bb4>] kvm_ioapic_update_eoi+0x84/0xf0 [kvm]
> [<ffffffffa0806c43>] apic_set_eoi+0x123/0x130 [kvm]
> [<ffffffffa0806fd8>] apic_reg_write+0x388/0x670 [kvm]
> [<ffffffffa07eb03c>] ? vcpu_enter_guest+0x32c/0x740 [kvm]
> [<ffffffffa0807481>] kvm_lapic_set_eoi+0x21/0x30 [kvm]
> [<ffffffffa04ba3f9>] handle_apic_access+0x69/0x80 [kvm_intel]
> [<ffffffffa04ba02a>] vmx_handle_exit+0xaa/0x260 [kvm_intel]
Its RCU from ack notifiers, OK.
next prev parent reply other threads:[~2012-07-18 21:23 UTC|newest]
Thread overview: 96+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-16 20:33 [PATCH v5 0/4] kvm: level irqfd and new eoifd Alex Williamson
2012-07-16 20:33 ` [PATCH v5 1/4] kvm: Extend irqfd to support level interrupts Alex Williamson
2012-07-17 21:26 ` Michael S. Tsirkin
2012-07-17 21:57 ` Alex Williamson
2012-07-17 22:00 ` Michael S. Tsirkin
2012-07-17 22:16 ` Alex Williamson
2012-07-17 22:28 ` Michael S. Tsirkin
2012-07-18 10:41 ` Michael S. Tsirkin
2012-07-18 10:44 ` Gleb Natapov
2012-07-18 10:48 ` Michael S. Tsirkin
2012-07-18 10:49 ` Gleb Natapov
2012-07-18 10:53 ` Michael S. Tsirkin
2012-07-18 10:55 ` Gleb Natapov
2012-07-18 11:22 ` Michael S. Tsirkin
2012-07-18 11:39 ` Michael S. Tsirkin
2012-07-18 11:48 ` Gleb Natapov
2012-07-18 12:07 ` Michael S. Tsirkin
2012-07-18 14:47 ` Alex Williamson
2012-07-18 15:38 ` Michael S. Tsirkin
2012-07-18 15:48 ` Alex Williamson
2012-07-18 15:58 ` Michael S. Tsirkin
2012-07-18 18:42 ` Marcelo Tosatti
2012-07-18 19:00 ` Gleb Natapov
2012-07-18 19:07 ` Alex Williamson
2012-07-18 19:13 ` Alex Williamson
2012-07-18 19:16 ` Michael S. Tsirkin
2012-07-18 20:28 ` Alex Williamson
2012-07-18 21:23 ` Marcelo Tosatti [this message]
2012-07-18 21:30 ` Michael S. Tsirkin
2012-07-16 20:33 ` [PATCH v5 2/4] kvm: KVM_EOIFD, an eventfd for EOIs Alex Williamson
2012-07-17 10:21 ` Michael S. Tsirkin
2012-07-17 13:59 ` Alex Williamson
2012-07-17 14:10 ` Michael S. Tsirkin
2012-07-17 14:29 ` Alex Williamson
2012-07-17 14:42 ` Michael S. Tsirkin
2012-07-17 14:57 ` Alex Williamson
2012-07-17 15:13 ` Michael S. Tsirkin
2012-07-17 15:41 ` Alex Williamson
2012-07-17 15:53 ` Michael S. Tsirkin
2012-07-17 16:06 ` Alex Williamson
2012-07-17 16:19 ` Michael S. Tsirkin
2012-07-17 16:52 ` Alex Williamson
2012-07-17 18:58 ` Michael S. Tsirkin
2012-07-17 20:03 ` Alex Williamson
2012-07-17 21:23 ` Michael S. Tsirkin
2012-07-17 22:09 ` Alex Williamson
2012-07-17 22:24 ` Michael S. Tsirkin
2012-07-18 2:44 ` Alex Williamson
2012-07-18 10:31 ` Michael S. Tsirkin
2012-07-16 20:34 ` [PATCH v5 3/4] kvm: Create kvm_clear_irq() Alex Williamson
2012-07-17 0:51 ` Michael S. Tsirkin
2012-07-17 2:42 ` Alex Williamson
2012-07-17 0:55 ` Michael S. Tsirkin
2012-07-17 10:14 ` Michael S. Tsirkin
2012-07-17 13:56 ` Alex Williamson
2012-07-17 14:08 ` Michael S. Tsirkin
2012-07-17 14:21 ` Alex Williamson
2012-07-17 14:53 ` Michael S. Tsirkin
2012-07-17 15:20 ` Alex Williamson
2012-07-17 15:36 ` Michael S. Tsirkin
2012-07-17 15:51 ` Alex Williamson
2012-07-17 15:57 ` Michael S. Tsirkin
2012-07-17 16:01 ` Gleb Natapov
2012-07-17 16:08 ` Alex Williamson
2012-07-17 16:14 ` Michael S. Tsirkin
2012-07-17 16:17 ` Alex Williamson
2012-07-17 16:21 ` Michael S. Tsirkin
2012-07-17 16:45 ` Alex Williamson
2012-07-17 18:55 ` Michael S. Tsirkin
2012-07-17 19:51 ` Alex Williamson
2012-07-17 21:05 ` Michael S. Tsirkin
2012-07-17 22:01 ` Alex Williamson
2012-07-17 22:05 ` Michael S. Tsirkin
2012-07-17 22:22 ` Alex Williamson
2012-07-17 22:31 ` Michael S. Tsirkin
2012-07-18 6:27 ` Gleb Natapov
2012-07-18 10:20 ` Michael S. Tsirkin
2012-07-18 10:27 ` Gleb Natapov
2012-07-18 10:33 ` Michael S. Tsirkin
2012-07-18 10:36 ` Gleb Natapov
2012-07-18 10:51 ` Michael S. Tsirkin
2012-07-18 10:53 ` Gleb Natapov
2012-07-18 11:08 ` Michael S. Tsirkin
2012-07-18 11:50 ` Gleb Natapov
2012-07-18 21:55 ` Michael S. Tsirkin
2012-07-17 16:36 ` Michael S. Tsirkin
2012-07-17 17:09 ` Gleb Natapov
2012-07-17 10:18 ` Michael S. Tsirkin
2012-07-16 20:34 ` [PATCH v5 4/4] kvm: Convert eoifd to use kvm_clear_irq Alex Williamson
2012-07-18 10:43 ` [PATCH v5 0/4] kvm: level irqfd and new eoifd Michael S. Tsirkin
2012-07-19 16:59 ` Michael S. Tsirkin
2012-07-19 17:29 ` Alex Williamson
2012-07-19 17:45 ` Michael S. Tsirkin
2012-07-19 18:48 ` Alex Williamson
2012-07-20 10:07 ` Michael S. Tsirkin
2012-07-22 15:09 ` Gleb Natapov
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