When there are multiple vfio devices, only the cfg_size of first vfio device can be correctly set to 4096. The cfg_size of other vfio devices are incorrectly set to 256. This will cause an error when live migrating a virtual machine with vfio devices to multiple destinations. Fix this by setting correct pcie_cap field before cfg_size initialize. Signed-off-by: Hao Zheng <yinhe@xxxxxxxxxxxxxxxxx> Signed-off-by: Quan Xu <quan.xu0@xxxxxxxxxxxxxxxxx> cc: Zou Nanhai <nanhai.zou@xxxxxxxxxxxxxxxxx> --- drivers/pci/iov.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c index 3aa115e..239fad1 100644 --- a/drivers/pci/iov.c +++ b/drivers/pci/iov.c @@ -133,6 +133,7 @@ static void pci_read_vf_config_common(struct pci_dev *virtfn) pci_read_config_word(virtfn, PCI_SUBSYSTEM_ID, &physfn->sriov->subsystem_device); + set_pcie_port_type(virtfn); physfn->sriov->cfg_size = pci_cfg_space_size(virtfn); } -- 1.8.3.1
