Re: [PATCH v2] pv-ops: register xen pci notifier

[Jeremy Fitzhardinge <jeremy@goop.org>]

On 07/28/09 19:38, Weidong Han wrote:
> Register the notifier to handle hot-plug devices and SR-IOV devices
> for Xen hypervisor. When a device is hot added or removed, it adds
> or removes it to Xen via hypercalls.
>
> Changes in v2:
> Remove inline #ifdef and the awkward dangling else/#endif construction,
> and rather than using memset, use variable declaration and initializer
> to assign the elements in xen_add_device.
>   

That looks much better.  Just one tiny nit:

> +
> +	if (HANDLE_PCI_IOV && pci_dev->is_virtfn) {
> +		struct physdev_manage_pci_ext manage_pci_ext = {
> +			.bus		= pci_dev->bus->number,
> +			.devfn		= pci_dev->devfn,
> +			.is_extfn	= 0,
> +			.is_virtfn 	= 1,
> +			.physfn.bus	= pci_dev->physfn->bus->number,
> +			.physfn.devfn	= pci_dev->physfn->devfn,
> +		};
> +
> +		r = HYPERVISOR_physdev_op(PHYSDEVOP_manage_pci_add_ext,
> +			&manage_pci_ext);
> +	} else if (pci_ari_enabled(pci_dev->bus) && PCI_SLOT(pci_dev->devfn)) {
> +		struct physdev_manage_pci_ext manage_pci_ext = {
> +			.bus		= pci_dev->bus->number,
> +			.devfn		= pci_dev->devfn,
> +			.is_extfn	= 1,
> +			.is_virtfn 	= 0,
> +			.physfn.bus	= 0,
> +			.physfn.devfn	= 0,
>   

It isn't necessarily to explicitly initialize elements to 0; that will
happen implicitly as a result of using an initializer.

Thanks,
    J