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From: Bandan Das <bsd@redhat.com>
To: kvm@vger.kernel.org
Cc: Alex Williamson <alex.williamson@redhat.com>
Subject: [PATCH] vfio: Set PCI_DEV_FLAGS_ASSIGNED when assigning device to guest
Date: Thu, 30 Jan 2014 22:54:24 +0530	[thread overview]
Message-ID: <jpgeh3ppelz.fsf@redhat.com> (raw)


Some drivers such as ixgbe rely on pci_vfs_assigned() to prevent
disabling sr-iov when vfs are still assigned during hotplug
event or module removal. Set and unset PCI_DEV_FLAGS_ASSIGNED
appropriately

Signed-off-by: Bandan Das <bsd@redhat.com>
---
 drivers/vfio/pci/vfio_pci.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/vfio/pci/vfio_pci.c b/drivers/vfio/pci/vfio_pci.c
index 7ba0424..7cc7ed6 100644
--- a/drivers/vfio/pci/vfio_pci.c
+++ b/drivers/vfio/pci/vfio_pci.c
@@ -90,6 +90,7 @@ static int vfio_pci_enable(struct vfio_pci_device *vdev)
 		vdev->has_vga = true;
 #endif
 
+	pdev->dev_flags |= PCI_DEV_FLAGS_ASSIGNED;
 	return 0;
 }
 
@@ -149,6 +150,7 @@ static void vfio_pci_disable(struct vfio_pci_device *vdev)
 				__func__, dev_name(&pdev->dev), ret);
 	}
 
+	pdev->dev_flags &= ~PCI_DEV_FLAGS_ASSIGNED;
 	pci_restore_state(pdev);
 }
 
-- 
1.8.3.1


             reply	other threads:[~2014-01-30 17:24 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-01-30 17:24 Bandan Das [this message]
2014-01-30 17:33 ` [PATCH] vfio: Set PCI_DEV_FLAGS_ASSIGNED when assigning device to guest Alex Williamson
2014-01-30 17:36   ` Alex Williamson
2014-01-30 18:06     ` Bandan Das
2014-01-30 18:38       ` Alex Williamson
2014-01-30 20:10         ` Bandan Das

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