Add this to support hot remove assigned device.
Acked-by: Mark McLoughlin <markmc@xxxxxxxxxx>
Signed-off-by: Weidong Han <weidong.han@xxxxxxxxx>
---
libkvm/libkvm.c | 14 ++++++++++++++
libkvm/libkvm.h | 13 +++++++++++++
2 files changed, 27 insertions(+), 0 deletions(-)
diff --git a/libkvm/libkvm.c b/libkvm/libkvm.c
index 92ffe10..a559a0d 100644
--- a/libkvm/libkvm.c
+++ b/libkvm/libkvm.c
@@ -1141,6 +1141,20 @@ int kvm_assign_irq(kvm_context_t kvm,
}
#endif
+#ifdef KVM_CAP_DEVICE_DEASSIGNMENT
+int kvm_deassign_pci_device(kvm_context_t kvm,
+ struct kvm_assigned_pci_dev *assigned_dev)
+{
+ int ret;
+
+ ret = ioctl(kvm->vm_fd, KVM_DEASSIGN_PCI_DEVICE, assigned_dev);
+ if (ret < 0)
+ return -errno;
+
+ return ret;
+}
+#endif
+
int kvm_destroy_memory_region_works(kvm_context_t kvm)
{
int ret = 0;
diff --git a/libkvm/libkvm.h b/libkvm/libkvm.h
index e79e4fd..f6d653c 100644
--- a/libkvm/libkvm.h
+++ b/libkvm/libkvm.h
@@ -737,6 +737,19 @@ int kvm_assign_irq(kvm_context_t kvm,
int kvm_destroy_memory_region_works(kvm_context_t kvm);
#endif
+#ifdef KVM_CAP_DEVICE_DEASSIGNMENT
+/*!
+ * \brief Notifies host kernel about a PCI device to be deassigned from a guest
+ *
+ * Used for hot remove PCI device, this function notifies the host
+ * kernel about the deassigning of the physical PCI device from a guest.
+ *
+ * \param kvm Pointer to the current kvm_context
+ * \param assigned_dev Parameters, like bus, devfn number, etc
+ */
+int kvm_deassign_pci_device(kvm_context_t kvm,
+ struct kvm_assigned_pci_dev *assigned_dev);
+#endif
/*!
* \brief Checks whether the generic irq routing capability is present
--
1.6.0.4
Attachment:
0004-kvm-libkvm-add-deassign-ioctl.patch
Description: 0004-kvm-libkvm-add-deassign-ioctl.patch
