linux-kernel - Re: [PATCH 06/13] selftests/nolibc: allow specify a bios for qemu

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Date:   Fri, 26 May 2023 09:00:02 +0200
From:   Thomas Weißschuh <thomas@...ch.de>
To:     Zhangjin Wu <falcon@...ylab.org>
Cc:     w@....eu, linux-kernel@...r.kernel.org,
        linux-kselftest@...r.kernel.org, linux-riscv@...ts.infradead.org,
        palmer@...belt.com, paul.walmsley@...ive.com
Subject: Re: [PATCH 06/13] selftests/nolibc: allow specify a bios for qemu

On 2023-05-25 01:52:29+0800, Zhangjin Wu wrote:
> riscv qemu has a builtin bios (opensbi), but it may not match the latest
> kernel and some old versions may hang during boot, let's allow user pass
> a newer version to qemu via the -bios option.

Nitpick:

This seems very specific and hopefully only necessary temporarily.

Instead it could be changed to some generic mechanim like
"QEMU_ARGS_EXTRA"?

> we can use it like this:
> 
>     $ make run BIOS=/path/to/new-bios ...
> 
> Signed-off-by: Zhangjin Wu <falcon@...ylab.org>
> ---
>  tools/testing/selftests/nolibc/Makefile | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/tools/testing/selftests/nolibc/Makefile b/tools/testing/selftests/nolibc/Makefile
> index 9adc8944dd80..9213763ab3b6 100644
> --- a/tools/testing/selftests/nolibc/Makefile
> +++ b/tools/testing/selftests/nolibc/Makefile
> @@ -70,7 +70,8 @@ QEMU_ARGS_mips       = -M malta -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)"
>  QEMU_ARGS_riscv      = -M virt -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
>  QEMU_ARGS_s390       = -M s390-ccw-virtio -m 1G -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
>  QEMU_ARGS_loongarch  = -M virt -append "console=ttyS0,115200 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
> -QEMU_ARGS            = $(QEMU_ARGS_$(ARCH))
> +QEMU_ARGS_BIOS       = $(if $(BIOS),-bios $(BIOS))
> +QEMU_ARGS            = $(QEMU_ARGS_$(ARCH)) $(QEMU_ARGS_BIOS)
>  
>  # OUTPUT is only set when run from the main makefile, otherwise
>  # it defaults to this nolibc directory.
> -- 
> 2.25.1
>