linux-kernel - Re: [PATCH 6/8 v4] PCI: support the SR-IOV capability

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Date:	Tue, 14 Oct 2008 07:37:44 -0700
From:	Greg KH <greg@...ah.com>
To:	Yu Zhao <yu.zhao@...el.com>
Cc:	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	"jbarnes@...tuousgeek.org" <jbarnes@...tuousgeek.org>,
	"randy.dunlap@...cle.com" <randy.dunlap@...cle.com>,
	"grundler@...isc-linux.org" <grundler@...isc-linux.org>,
	"achiang@...com" <achiang@...com>,
	"matthew@....cx" <matthew@....cx>,
	"rdreier@...co.com" <rdreier@...co.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"kvm@...r.kernel.org" <kvm@...r.kernel.org>,
	"virtualization@...ts.linux-foundation.org" 
	<virtualization@...ts.linux-foundation.org>
Subject: Re: [PATCH 6/8 v4] PCI: support the SR-IOV capability

On Tue, Oct 14, 2008 at 06:59:28PM +0800, Yu Zhao wrote:
> +struct pci_iov {
> +	int cap;		/* capability position */
> +	int align;		/* page size used to map memory space */
> +	int is_enabled;		/* status of SR-IOV */
> +	int nentries;		/* number of sysfs entries used by PF driver */
> +	u16 totalvfs;		/* total VFs associated with the PF */
> +	u16 initialvfs;		/* initial VFs associated with the PF */
> +	u16 numvfs;		/* number of VFs available */
> +	u16 offset;		/* first VF Routing ID offset */
> +	u16 stride;		/* following VF stride */
> +	struct mutex mutex;	/* lock for SR-IOV */
> +	struct kobject kobj;	/* koject for IOV */

Why isn't this a real struct device?

That way you get all of the proper userspace notification and the like,
with kobjects, you do not.

thanks,

greg k-h
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