Public bug reported:

System with Mellanox Bluefield3 with a Bluefield3 card and 4 NVME when probing 
will see at dmesg some pci resources unassigned. 
Will see these messages at dmesg:
[    8.670754] pci 0006:03:00.0: BAR 0: assigned [mem 
0x6300c0000000-0x6300c1ffffff 64bit pref]
[    8.679447] pci 0006:03:00.1: BAR 0: assigned [mem 
0x6300c2000000-0x6300c3ffffff 64bit pref]
[    8.688134] pci 0006:03:00.2: BAR 0: no space for [mem size 0x00800000 64bit 
pref]
[    8.695876] pci 0006:03:00.2: BAR 0: failed to assign [mem size 0x00800000 
64bit pref]
[    8.703974] pci 0006:03:00.0: BAR 7: no space for [mem size 0x02000000 64bit 
pref]
[    8.711714] pci 0006:03:00.0: BAR 7: failed to assign [mem size 0x02000000 
64bit pref]
[    8.719811] pci 0006:03:00.1: BAR 7: no space for [mem size 0x02000000 64bit 
pref]
[    8.727553] pci 0006:03:00.1: BAR 7: failed to assign [mem size 0x02000000 
64bit pref]
[    8.735650] pci 0006:03:00.0: BAR 6: assigned [mem 
0x630040000000-0x6300400fffff pref]
[    8.743748] pci 0006:03:00.1: BAR 6: assigned [mem 
0x630040100000-0x6300401fffff pref]
[    8.751845] pci 0006:03:00.0: BAR 0: assigned [mem 
0x6300c0000000-0x6300c1ffffff 64bit pref]
[    8.760531] pci 0006:03:00.1: BAR 0: assigned [mem 
0x6300c2000000-0x6300c3ffffff 64bit pref]
[    8.769217] pci 0006:03:00.2: BAR 0: no space for [mem size 0x00800000 64bit 
pref]
[    8.776956] pci 0006:03:00.2: BAR 0: failed to assign [mem size 0x00800000 
64bit pref]
[    8.785052] pci 0006:03:00.0: BAR 6: assigned [mem 
0x630040000000-0x6300400fffff pref]
[    8.793150] pci 0006:03:00.1: BAR 6: assigned [mem 
0x630040100000-0x6300401fffff pref]
[    8.801247] pci 0006:03:00.1: BAR 7: no space for [mem size 0x02000000 64bit 
pref]
[    8.808987] pci 0006:03:00.1: BAR 7: failed to assign [mem size 0x02000000 
64bit pref]
[    8.817086] pci 0006:03:00.0: BAR 7: no space for [mem size 0x02000000 64bit 
pref]
[    8.824828] pci 0006:03:00.0: BAR 7: failed to assign [mem size 0x02000000 
64bit pref]

...
[    9.180489] pci_bus 0006:00: Some PCI device resources are unassigned, try 
booting with pci=realloc

We were using the kernel parameter pci=realloc to avoid the failure but patch 
in this lore discussion 
https://lore.kernel.org/all/20241204022457.51322-1-kaihe...@nvidia.com/
fixes the issue.

** Affects: linux-nvidia (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/2094821

Title:
  PCI resources unassigned with Bluefield3 switch

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