This is most likely an artifact from the change of the IPC buffer
handling before v11.0.0, where a thread-local register (tp on RISC-V)
was reserved by the kernel for storing the pointer to the thread's
IPC buffer. Architectures such as aarch64 would set the register
inside Arch_switchToThread() and then not touch the register in
restore_user_context(). When the RISC-V port was up-streamed, it
didn't restore the register with the other registers, but also
didn't restore it in Arch_switchToThread() and so ended up restoring
it right at the end of the restore process.
Co-authored-by: Kent McLeod <kent@kry10.com>
Signed-off-by: Axel Heider <axel.heider@codasip.com>
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