> > > Have you checked if you have a PCI bridge connecting to your graphics card > in > the same IOMMU group? Or any other device? > > In that case you should not be able to reserve memory at all, but no harm > checking. > > Yes, I checked that. root@server:/sys/kernel/iommu_groups# ls -la 14/devices/ total 0 drwxr-xr-x 2 root root 0 aug 20 17:23 . drwxr-xr-x 3 root root 0 aug 20 17:23 .. lrwxrwxrwx 1 root root 0 aug 20 17:23 0000:01:00.0 -> ../../../../devices/pci0000:00/0000:00:02.0/0000:01:00.0 lrwxrwxrwx 1 root root 0 aug 20 17:23 0000:01:00.1 -> ../../../../devices/pci0000:00/0000:00:02.0/0000:01:00.1
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