diff options
| author | Alex Williamson <alex.williamson@redhat.com> | 2013-01-23 17:46:13 -0700 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2013-01-30 01:31:09 +0200 |
| commit | 6a659bbff991b0033d1bf1ff71b7d550e0367d99 (patch) | |
| tree | 98c5b782a4f171e61a52fd6cca77eb2823f254c0 | |
| parent | 1ec4ba741630699665a6334f3959271da3effec7 (diff) | |
vfio-pci: Enable PCIe extended config space
We don't know pre-init time whether the device we're exposing is PCIe
or legacy PCI. We could ask for it to be specified via a device
option, but that seems like too much to ask of the user. Instead we
can assume everything will be PCIe, which makes PCI-core allocate
enough config space. Removing the flag during init leaves the space
allocated, but allows legacy PCI devices to report the real device
config space size to rest of Qemu.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| -rw-r--r-- | hw/vfio_pci.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/hw/vfio_pci.c b/hw/vfio_pci.c index c51ae6761b..66537b7eb5 100644 --- a/hw/vfio_pci.c +++ b/hw/vfio_pci.c @@ -1899,6 +1899,9 @@ static int vfio_get_device(VFIOGroup *group, const char *name, VFIODevice *vdev) (unsigned long)reg_info.flags); vdev->config_size = reg_info.size; + if (vdev->config_size == PCI_CONFIG_SPACE_SIZE) { + vdev->pdev.cap_present &= ~QEMU_PCI_CAP_EXPRESS; + } vdev->config_offset = reg_info.offset; error: @@ -2121,6 +2124,7 @@ static void vfio_pci_dev_class_init(ObjectClass *klass, void *data) pdc->exit = vfio_exitfn; pdc->config_read = vfio_pci_read_config; pdc->config_write = vfio_pci_write_config; + pdc->is_express = 1; /* We might be */ } static const TypeInfo vfio_pci_dev_info = { |