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authorGreg Rose <gregory.v.rose@intel.com>2011-07-22 05:46:07 +0000
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2011-09-23 09:05:44 -0700
commit6777829cfe1c4ed78319ad40aaee60254222da76 (patch)
tree03e55538247c4b2fbdc837984922a0ac8753b253 /include
parent9c9b1f24f2aa31a3cea94939edc551f68ebadc89 (diff)
pci: Add flag indicating device has been assigned by KVM
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 KVM module 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. CC: Ian Campbell <ijc@hellion.org.uk> CC: Konrad Wilk <konrad.wilk@oracle.com> Signed-off-by: Greg Rose <gregory.v.rose@intel.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/pci.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h
index f27893b3b72..d8c8573ecc2 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -174,6 +174,8 @@ enum pci_dev_flags {
PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG = (__force pci_dev_flags_t) 1,
/* Device configuration is irrevocably lost if disabled into D3 */
PCI_DEV_FLAGS_NO_D3 = (__force pci_dev_flags_t) 2,
+ /* Provide indication device is assigned by a Virtual Machine Manager */
+ PCI_DEV_FLAGS_ASSIGNED = (__force pci_dev_flags_t) 4,
};
enum pci_irq_reroute_variant {