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Re: [Qemu-devel] [PATCH 1.1 V2] xen: Fix PV-on-HVM
From: |
Stefano Stabellini |
Subject: |
Re: [Qemu-devel] [PATCH 1.1 V2] xen: Fix PV-on-HVM |
Date: |
Thu, 17 May 2012 11:35:26 +0100 |
User-agent: |
Alpine 2.00 (DEB 1167 2008-08-23) |
On Wed, 16 May 2012, Anthony PERARD wrote:
> In the context of PV-on-HVM under Xen, the emulated nics are supposed to be
> unplug before the guest drivers are initialized, when the guest write to a
> specific IO port.
>
> Without this patch, the guest end up with two nics with the same MAC, the
> emulated nic and the PV nic.
>
> Signed-off-by: Anthony PERARD <address@hidden>
> ---
I think that the patch is correct and a good candidate for rc3. Any
comments?
> hw/xen_platform.c | 5 ++++-
> 1 files changed, 4 insertions(+), 1 deletions(-)
>
> diff --git a/hw/xen_platform.c b/hw/xen_platform.c
> index a9c52a6..0214f37 100644
> --- a/hw/xen_platform.c
> +++ b/hw/xen_platform.c
> @@ -87,7 +87,10 @@ static void unplug_nic(PCIBus *b, PCIDevice *d)
> {
> if (pci_get_word(d->config + PCI_CLASS_DEVICE) ==
> PCI_CLASS_NETWORK_ETHERNET) {
> - qdev_unplug(&(d->qdev), NULL);
> + /* Until qdev_free includes a call to object_unparent, we call it
> here
> + */
> + object_unparent(&d->qdev.parent_obj);
> + qdev_free(&d->qdev);
> }
> }
>
> --
> Anthony PERARD
>