# Recommended kernel boot parameters for AMD Strix Halo
# Add to GRUB_CMDLINE_LINUX in /etc/default/grub
#
# After editing, regenerate GRUB:
#   sudo grub2-mkconfig -o /boot/grub2/grub.cfg
# Then reboot.
#
# For 64GB system (HP ZBook Ultra G1a):
iommu=pt amdgpu.gttsize=60416 ttm.pages_limit=15466496
#
# For 128GB system (Framework Desktop, GMKtec EVO X2):
# iommu=pt amdgpu.gttsize=126976 ttm.pages_limit=32505856
#
# Parameter explanation:
#   iommu=pt           - IOMMU passthrough, reduces memory access latency
#   amdgpu.gttsize=N   - Max GPU-addressable system RAM in MiB (total - 4GB reserve)
#   ttm.pages_limit=N  - Max pinnable 4K pages (gttsize_MiB * 256)