From 6a659bbff991b0033d1bf1ff71b7d550e0367d99 Mon Sep 17 00:00:00 2001 From: Alex Williamson Date: Wed, 23 Jan 2013 17:46:13 -0700 Subject: [PATCH] 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 Signed-off-by: Michael S. Tsirkin --- hw/vfio_pci.c | 4 ++++ 1 file changed, 4 insertions(+) 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 = {