linux-kernel - Re: [PATCH 1/3] selftests/nolibc: use EFI -bios for LoongArch qemu

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Message-ID: <ZUNimsmXWjky6Z37@1wt.eu>
Date:   Thu, 2 Nov 2023 09:49:30 +0100
From:   Willy Tarreau <w@....eu>
To:     Thomas Weißschuh <linux@...ssschuh.net>
Cc:     Shuah Khan <shuah@...nel.org>, Zhangjin Wu <falcon@...ylab.org>,
        linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] selftests/nolibc: use EFI -bios for LoongArch qemu

On Tue, Oct 31, 2023 at 09:36:58PM +0100, Thomas Weißschuh wrote:
> qemu for LoongArch does not work properly with direct kernel boot.
> The kernel will panic during initialization and hang without any output.
> 
> When booting in EFI mode everything work correctly.
> 
> While users most likely don't have the LoongArch EFI binary installed at
> least an explicit error about 'file not found' is better than a hanging
> test without output that can never succeed.
> 
> Link: https://lore.kernel.org/loongarch/1738d60a-df3a-4102-b1da-d16a29b6e06a@t-8ch.de/
> Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>
> ---
>  tools/testing/selftests/nolibc/Makefile | 9 ++++++++-
>  1 file changed, 8 insertions(+), 1 deletion(-)
> 
> diff --git a/tools/testing/selftests/nolibc/Makefile b/tools/testing/selftests/nolibc/Makefile
> index a0fc07253baf..eb258ae1d948 100644
> --- a/tools/testing/selftests/nolibc/Makefile
> +++ b/tools/testing/selftests/nolibc/Makefile
> @@ -88,6 +88,13 @@ QEMU_ARCH_s390       = s390x
>  QEMU_ARCH_loongarch  = loongarch64
>  QEMU_ARCH            = $(QEMU_ARCH_$(XARCH))
>  
> +QEMU_BIOS_DIR = /usr/share/edk2/
> +QEMU_BIOS_loongarch = $(QEMU_BIOS_DIR)/loongarch64/OVMF_CODE.fd
> +
> +ifneq ($(QEMU_BIOS_$(XARCH)),)
> +QEMU_ARGS_BIOS = -bios $(QEMU_BIOS_$(XARCH))
> +endif
> +
>  # QEMU_ARGS : some arch-specific args to pass to qemu
>  QEMU_ARGS_i386       = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)"
>  QEMU_ARGS_x86_64     = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)"
> @@ -101,7 +108,7 @@ QEMU_ARGS_ppc64le    = -M powernv -append "console=hvc0 panic=-1 $(TEST:%=NOLIBC
>  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            = $(QEMU_ARGS_$(XARCH)) $(QEMU_ARGS_EXTRA)
> +QEMU_ARGS            = $(QEMU_ARGS_$(XARCH)) $(QEMU_ARGS_BIOS) $(QEMU_ARGS_EXTRA)
>  
>  # OUTPUT is only set when run from the main makefile, otherwise
>  # it defaults to this nolibc directory.

Looks much nicer this way, thanks ;-)

Acked-by: Willy Tarreau <w@....eu>

Willy