diff options
| author | Weidong Han <weidong.han@intel.com> | 2009-05-21 17:08:38 -0700 |
|---|---|---|
| committer | Eduardo Habkost <ehabkost@redhat.com> | 2009-05-28 18:55:18 -0300 |
| commit | 4b71bd9e25cbf932ff02b04b9db31458481b3209 (patch) | |
| tree | 077c7227a381fa7806a2bff0b641b56b63e823cb /libkvm | |
| parent | e80d654b2c16b64595b2598f2d3e168683bc0fa5 (diff) | |
kvm: libkvm: add deassign ioctl
Add this to support hot remove assigned device.
Acked-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Weidong Han <weidong.han@intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
(cherry picked from commit 0512290fa039bfb8254df33bd5e1a8407add4211)
Signed-off-by: Chris Wright <chrisw@redhat.com>
Bugzilla: 498084
Message-Id: <1242950924-30161-8-git-send-email-chrisw@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
RH-Upstream-status: applied
Acked-by: Juan Quintela <quintela@redhat.com>
Acked-by: Marcelo Tosatti <mtosatti@redhat.com>
Acked-by: Don Dutile <ddutile@redhat.com>
Diffstat (limited to 'libkvm')
| -rw-r--r-- | libkvm/libkvm.c | 14 | ||||
| -rw-r--r-- | libkvm/libkvm.h | 13 |
2 files changed, 27 insertions, 0 deletions
diff --git a/libkvm/libkvm.c b/libkvm/libkvm.c index 92332077..5ffb01f8 100644 --- a/libkvm/libkvm.c +++ b/libkvm/libkvm.c @@ -1154,6 +1154,20 @@ 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 40275d74..87dded7b 100644 --- a/libkvm/libkvm.h +++ b/libkvm/libkvm.h @@ -721,6 +721,19 @@ 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 |