linux-kernel - Re: [PATCH v5 8/9] xen-pciback: drop SR-IOV VFs when PF driver unloads

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Message-Id: <54805552020000780004CAD4@mail.emea.novell.com>
Date:	Thu, 04 Dec 2014 11:36:34 +0000
From:	"Jan Beulich" <JBeulich@...e.com>
To:	"David Vrabel" <david.vrabel@...rix.com>
Cc:	<bhelgaas@...gle.com>, <xen-devel@...ts.xenproject.org>,
	<boris.ostrovsky@...cle.com>,
	"Konrad Rzeszutek Wilk" <konrad.wilk@...cle.com>,
	<linux-kernel@...r.kernel.org>, <linux-pci@...r.kernel.org>
Subject: Re: [PATCH v5 8/9] xen-pciback: drop SR-IOV VFs when PF driver
 unloads

>>> On 04.12.14 at 12:07, <david.vrabel@...rix.com> wrote:
> On 03/12/14 21:40, Konrad Rzeszutek Wilk wrote:
>> From: Jan Beulich <JBeulich@...e.com>
>> 
>> When a PF driver unloads, it may find it necessary to leave the VFs
>> around simply because of pciback having marked them as assigned to a
>> guest. Utilize a suitable notification to let go of the VFs, thus
>> allowing the PF to go back into the state it was before its driver
>> loaded (which in particular allows the driver to be loaded again with
>> it being able to create the VFs anew, but which also allows to then
>> pass through the PF instead of the VFs).
>> 
>> Don't do this however for any VFs currently in active use by a guest.
>> 
>> Signed-off-by: Jan Beulich <jbeulich@...e.com>
>> [v2: Removed the switch statement, moved it about]
>> [v3: Redid it a bit differently]
> 
> Jan, are you happy with Konrad's change now?

Yes: http://lists.xenproject.org/archives/html/xen-devel/2014-12/msg00267.html

Jan

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