Testing specific CPUs
=====================
+Emulated virtual machines
+-------------------------
+
For testing specific CPUs, such as
- alpha
- arm
- On sparc: Spin lock tests hang.
That is, in the really tricky areas QEMU in "user mode" is less reliable
than QEMU in system emulation mode.
+
+
+Bring your own hardware
+-----------------------
+
+For the following CPUs, it is possible to buy some real hardware:
+ - arm
+ Raspberry Pi 1 or 2
+ <https://en.wikipedia.org/wiki/Raspberry_Pi>
+ Costs less than $50.
+ - arm64
+ Raspberry Pi 3 or newer
+ <https://en.wikipedia.org/wiki/Raspberry_Pi>
+ Costs less than $100.
+ - mips
+ Onion Omega2 Pro, costs less than $100.
+ - riscv64
+ SiFive HF103-000, costs less than $50.
+ SiFive HF103-001, costs less than $100.
+ BeagleBoard BeagleV, costs less than $200.