From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Date: Mon, 26 Sep 2011 16:22:01 +0000 (-0400)
Subject: xen/pciback: Add flag indicating device has been assigned by Xen
X-Git-Tag: v3.2-rc1~129^2~214
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cf177fd049d6248b8c594bd7fa3ba56313f7d405;p=pandora-kernel.git

xen/pciback: Add flag indicating device has been assigned by Xen

Device drivers that create and destroy SR-IOV virtual functions via
calls to pci_enable_sriov() and pci_disable_sriov can cause catastrophic
failures if they attempt to destroy VFs while they are assigned to
guest virtual machines.  By adding a flag for use by the Xen PCI back
to indicate that a device is assigned a device driver can check that
flag and avoid destroying VFs while they are assigned and avoid system
failures.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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