Re: [libvirt] [PATCH 3/9] qemu: Don't detach devices if passthrough doesn't work

From: Jincheng Miao <jmiao(a)redhat.com&gt; https://bugzilla.redhat.com/show_bug.cgi?id=1046919 If none (KVM, VFIO) of the supported PCI passthrough methods is known to work on a host, it's better to fail right away with a nice error message rather than letting attachment fail with a more cryptic message such as Failed to bind PCI device '0000:07:05.0' to vfio-pci: No such device Signed-off-by: Jiri Denemark <jdenemar(a)redhat.com&gt; --- src/qemu/qemu_driver.c | 32 +++++++++++++++++++++++--------- 1 file changed, 23 insertions(+), 9 deletions(-)