* [Qemu-devel] [PATCH] pci: deassert intx when pci device unrealize
@ 2017-04-25 2:29 Herongguang (Stephen)
2017-04-25 5:09 ` Marcel Apfelbaum
0 siblings, 1 reply; 2+ messages in thread
From: Herongguang (Stephen) @ 2017-04-25 2:29 UTC (permalink / raw)
To: Michael S. Tsirkin, marcel, qemu-devel
Cc: qemu-stable, wangxinxin.wang@huawei.com >> wangxin (U)
If a pci device is not reset by VM (by writing into config space)
and unplugged by VM, after that when VM reboots, qemu may assert:
pcibus_reset: Assertion `bus->irq_count[i] == 0' failed
Signed-off-by: herongguang <herongguang.he@huawei.com>
---
hw/pci/pci.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/hw/pci/pci.c b/hw/pci/pci.c
index 259483b..98ccc27 100644
--- a/hw/pci/pci.c
+++ b/hw/pci/pci.c
@@ -1083,6 +1083,7 @@ static void pci_qdev_unrealize(DeviceState *dev, Error **errp)
pc->exit(pci_dev);
}
+ pci_device_deassert_intx(pci_dev);
do_pci_unregister_device(pci_dev);
}
--
1.7.12.4
^ permalink raw reply related [flat|nested] 2+ messages in thread* Re: [Qemu-devel] [PATCH] pci: deassert intx when pci device unrealize
2017-04-25 2:29 [Qemu-devel] [PATCH] pci: deassert intx when pci device unrealize Herongguang (Stephen)
@ 2017-04-25 5:09 ` Marcel Apfelbaum
0 siblings, 0 replies; 2+ messages in thread
From: Marcel Apfelbaum @ 2017-04-25 5:09 UTC (permalink / raw)
To: Herongguang (Stephen), Michael S. Tsirkin, qemu-devel
Cc: qemu-stable, wangxinxin.wang@huawei.com >> wangxin (U)
On 04/25/2017 05:29 AM, Herongguang (Stephen) wrote:
> If a pci device is not reset by VM (by writing into config space)
> and unplugged by VM, after that when VM reboots, qemu may assert:
> pcibus_reset: Assertion `bus->irq_count[i] == 0' failed
>
> Signed-off-by: herongguang <herongguang.he@huawei.com>
> ---
> hw/pci/pci.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/hw/pci/pci.c b/hw/pci/pci.c
> index 259483b..98ccc27 100644
> --- a/hw/pci/pci.c
> +++ b/hw/pci/pci.c
> @@ -1083,6 +1083,7 @@ static void pci_qdev_unrealize(DeviceState *dev, Error **errp)
> pc->exit(pci_dev);
> }
>
> + pci_device_deassert_intx(pci_dev);
> do_pci_unregister_device(pci_dev);
> }
>
> --
> 1.7.12.4
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
Thanks,
Marcel
^ permalink raw reply [flat|nested] 2+ messages in thread
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2017-04-25 2:29 [Qemu-devel] [PATCH] pci: deassert intx when pci device unrealize Herongguang (Stephen)
2017-04-25 5:09 ` Marcel Apfelbaum
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