Re: [libvirt] [PATCH] qemu: Explain why mdevs are assumed to be PCI Express

Signed-off-by: Andrea Bolognani <abologna(a)redhat.com&gt; --- src/qemu/qemu_domain_address.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/src/qemu/qemu_domain_address.c b/src/qemu/qemu_domain_address.c index 2106b34..b5b863f 100644 --- a/src/qemu/qemu_domain_address.c +++ b/src/qemu/qemu_domain_address.c @@ -645,6 +645,11 @@ qemuDomainDeviceCalculatePCIConnectFlags(virDomainDeviceDefPtr dev, return pcieFlags; } + /* mdevs don't have corresponding files in /sys that we can poke to + * try and figure out whether they are legacy PCI or PCI Express, so + * the logic below would never work; instead, we just go ahead and + * assume they're PCI Express. This is a very reasonable assumption, + * as all current mdev-capable devices are indeed PCI Express */ if (hostdev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_MDEV) return pcieFlags; -- 2.7.5