commit 4de81093f894c42bce975e52fc7b470a76046301
author Philippe Mathieu-Daudé <philmd@linaro.org> Tue Jun 27 16:32:35 2023 +0200
committer Alistair Francis <alistair.francis@wdc.com> Mon Jul 10 22:29:15 2023 +1000
tree 8a04d75bb9b98cd0624238e04194de54e076cdd3
parent 278c1bcef568f41e298792f9f437efd333305812

target/riscv: Only build KVM guest with same wordsize as host

Per Anup Patel in [*]:

 > Currently, we only support running rv64 guest on rv64 host
 > and rv32 guest on rv32 host.
 >
 > In the future, we might support running rv32 guest on rv64
 > host but as of now we don't see a strong push for it.

Therefore, when only using the KVM accelerator it is pointless
to build qemu-system-riscv32 on a rv64 host (or qemu-system-riscv64
on a rv32 host). Restrict meson to only build the correct binary,
avoiding to waste ressources building unusable code.

[*] https://lore.kernel.org/qemu-devel/CAAhSdy2JeRHeeoEc1XKQhPO3aDz4YKeyQsPT4S8yKJcYTA+AiQ@mail.gmail.com/

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20230627143235.29947-3-philmd@linaro.org>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>