Initial commit

02-system/50-boot.sh

@@ -0,0 +1,19 @@
+# Add kernel cmdline tuning to the systemd-boot loader entries, idempotently.
+# systemd-boot reads `options` at boot — no initramfs/entry regeneration needed.
+# (intel_iommu is harmless on AMD CPUs; both target machines are Intel.)
+
+toks="intel_iommu=on iommu=pt"                          # VFIO / PCI passthrough
+[ "$GPU" = amd ] && toks="$toks amdgpu.mcbp=0 amdgpu.ppfeaturemask=0xfff7ffff"
+
+shopt -s nullglob
+entries=(/boot/loader/entries/arch*.conf)
+[ "${#entries[@]}" -gt 0 ] || die "no loader entries in /boot/loader/entries (run base install first)"
+
+for f in "${entries[@]}"; do
+  opts="$(sed -n 's/^options //p' "$f")"
+  for t in $toks; do
+    case " $opts " in *" $t "*) ;; *) opts="$opts $t" ;; esac
+  done
+  sed -i "s|^options .*|options $opts|" "$f"
+  info "$(basename "$f"): options $opts"
+done