diff options
Diffstat (limited to 'hw/vfio/pci.c')
| -rw-r--r-- | hw/vfio/pci.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c index b2d5010b9f..86c92c51a4 100644 --- a/hw/vfio/pci.c +++ b/hw/vfio/pci.c @@ -1493,7 +1493,9 @@ static void vfio_msix_early_setup(VFIOPCIDevice *vdev, Error **errp) uint8_t pos; uint16_t ctrl; uint32_t table, pba; - int fd = vdev->vbasedev.fd; + int ret, fd = vdev->vbasedev.fd; + struct vfio_irq_info irq_info = { .argsz = sizeof(irq_info), + .index = VFIO_PCI_MSIX_IRQ_INDEX }; VFIOMSIXInfo *msix; pos = pci_find_capability(&vdev->pdev, PCI_CAP_ID_MSIX); @@ -1530,6 +1532,15 @@ static void vfio_msix_early_setup(VFIOPCIDevice *vdev, Error **errp) msix->pba_offset = pba & ~PCI_MSIX_FLAGS_BIRMASK; msix->entries = (ctrl & PCI_MSIX_FLAGS_QSIZE) + 1; + ret = ioctl(vdev->vbasedev.fd, VFIO_DEVICE_GET_IRQ_INFO, &irq_info); + if (ret < 0) { + error_setg_errno(errp, -ret, "failed to get MSI-X irq info"); + g_free(msix); + return; + } + + msix->noresize = !!(irq_info.flags & VFIO_IRQ_INFO_NORESIZE); + /* * Test the size of the pba_offset variable and catch if it extends outside * of the specified BAR. If it is the case, we need to apply a hardware @@ -1562,7 +1573,8 @@ static void vfio_msix_early_setup(VFIOPCIDevice *vdev, Error **errp) } trace_vfio_msix_early_setup(vdev->vbasedev.name, pos, msix->table_bar, - msix->table_offset, msix->entries); + msix->table_offset, msix->entries, + msix->noresize); vdev->msix = msix; vfio_pci_fixup_msix_region(vdev); |