spapr: Remove support for NVIDIA V100 GPU with NVLink2

NVLink2 support was removed from the PPC PowerNV platform and VFIO in
Linux 5.13 with commits :

  562d1e207d32 ("powerpc/powernv: remove the nvlink support")
  b392a1989170 ("vfio/pci: remove vfio_pci_nvlink2")

This was 2.5 years ago. Do the same in QEMU with a revert of commit
ec132efaa81f ("spapr: Support NVIDIA V100 GPU with NVLink2"). Some
adjustements are required on the NUMA part.

Cc: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
Message-ID: <20230918091717.149950-1-clg@kaod.org>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>

1 files changed, 0 insertions, 14 deletions

diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index a205c6b113..3b2ca3c24c 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -3271,20 +3271,6 @@ static void vfio_realize(PCIDevice *pdev, Error **errp)
         }
     }
 
-    if (vfio_pci_is(vdev, PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID)) {
-        ret = vfio_pci_nvidia_v100_ram_init(vdev, errp);
-        if (ret && ret != -ENODEV) {
-            error_report("Failed to setup NVIDIA V100 GPU RAM");
-        }
-    }
-
-    if (vfio_pci_is(vdev, PCI_VENDOR_ID_IBM, PCI_ANY_ID)) {
-        ret = vfio_pci_nvlink2_init(vdev, errp);
-        if (ret && ret != -ENODEV) {
-            error_report("Failed to setup NVlink2 bridge");
-        }
-    }
-
     if (!pdev->failover_pair_id) {
         if (!vfio_migration_realize(vbasedev, errp)) {
             goto out_deregister;