docs: PROTOCOL.md: Clarify that DTBs are in bootloader recl memory
diff --git a/PROTOCOL.md b/PROTOCOL.md
index c49a4815..7be10b95 100644
--- a/PROTOCOL.md
+++ b/PROTOCOL.md
@@ -1304,7 +1304,7 @@ struct limine_dtb_response {
};
```
-* `dtb_ptr` - Virtual pointer to the device tree blob.
+* `dtb_ptr` - Virtual (HHDM) pointer to the device tree blob, in bootloader reclaimable memory.
Note: If the DTB cannot be found, the response will *not* be generated.
