docs: Intel GPU performance tips

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33019>

docs/perf.rst

@@ -1,7 +1,24 @@
 Performance Tips
 ================
 
-Performance tips for software rendering:
+# Performance Tips for Intel GPUs
+
+#. Keep the system updated with the latest kernel and Mesa versions.
+#. Ensure SoC firmware is up-to-date. These firmware updates currently
+   require installing the Windows graphics driver; firmware updates 
+   via `fwupd` are in progress.
+#. Use Wayland where possible, as it supports additional modifiers for
+   better performance.
+#. For MTL and newer integrated GPUs, disable VT-d if virtualization is
+   not needed.
+#. For discrete GPUs:
+   #. Enable `ReBAR`_
+   #. Enable `ASPM`_
+
+.. _ReBAR: https://www.intel.com/content/www/us/en/support/articles/000090831/graphics.html
+.. _ASPM: https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/6/html/power_management_guide/aspm
+
+# Performance tips for software rendering
 
 #. Turn off smooth shading when you don't need it (glShadeModel)
 #. Turn off depth buffering when you don't need it.