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spapr: Remove support for NVIDIA V100 GPU with NVLink2

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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
ec132efaa8 ("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>
This commit is contained in:
Cédric Le Goater 2023-09-18 11:17:17 +02:00 • committed by Daniel Henrique Barboza
parent 527b238329
commit 44fa20c928
11 changed files with 14 additions and 708 deletions
Download patch file Download diff file Expand all files Collapse all files

14
hw/vfio/pci.c
View file

@ -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;