gem5 vs qemu license

README.adoc

@@ -1180,11 +1180,9 @@ in which the boot appears to hang for a considerable time.
 
 === GEM5
 
-==== GEM5 Introduction
-
 GEM5 is a system simulator, much like QEMU: http://gem5.org/
 
-Vs QEMU:
+==== GEM5 vs QEMU
 
 * advantage: simulates a generic more realistic pipelined and optionally out of order CPU cycle by cycle, including a realistic DRAM memory access model with latencies, caches and page table manipulations. This allows us to:
 ** do much more realistic performance benchmarking with it, which makes absolutely no sense in QEMU, which is purely functional
@@ -1201,6 +1199,11 @@ Instead, we have only chip makers, who keep everything that really works closed,
 +
 ** the documentation is more scarce
 ** it takes longer to support new hardware features
+* not sure: GEM5 has BSD license while QEMU has GPL
++
+This suits chip makers that want to distribute forks with secret IP to their customers.
++
+On the other hand, the chip makers tend to upstream less, and the project becomes more crappy in average :-)
 
 ==== GEM5 ARM