linux-kernel - Re: [PATCH v1 7/8] selftests/nolibc: add test support for powerpc64le

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Message-ID: <20230722120747.GC17311@1wt.eu>
Date:   Sat, 22 Jul 2023 14:07:47 +0200
From:   Willy Tarreau <w@....eu>
To:     Zhangjin Wu <falcon@...ylab.org>
Cc:     thomas@...ch.de, arnd@...db.de, linux-kernel@...r.kernel.org,
        linux-kselftest@...r.kernel.org
Subject: Re: [PATCH v1 7/8] selftests/nolibc: add test support for powerpc64le

On Wed, Jul 19, 2023 at 05:17:26AM +0800, Zhangjin Wu wrote:
> Here adds test support for little endian 64-bit PowerPC.
> 
> The powernv machine of qemu-system-ppc64le is used for there is just a
> working powernv_defconfig.
> 
> As the document [1] shows:
> 
>   PowerNV (as Non-Virtualized) is the "bare metal" platform using the
>   OPAL firmware. It runs Linux on IBM and OpenPOWER systems and it can be
>   used as an hypervisor OS, running KVM guests, or simply as a host OS.
> 
> [1]: https://qemu.readthedocs.io/en/latest/system/ppc/powernv.html
> 
> Signed-off-by: Zhangjin Wu <falcon@...ylab.org>
> ---
>  tools/testing/selftests/nolibc/Makefile | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/tools/testing/selftests/nolibc/Makefile b/tools/testing/selftests/nolibc/Makefile
> index 9c375fab84e5..fbdf7fd9bf96 100644
> --- a/tools/testing/selftests/nolibc/Makefile
> +++ b/tools/testing/selftests/nolibc/Makefile
> @@ -19,6 +19,7 @@ endif
>  XARCH           ?= $(or $(XARCH_$(ARCH)),$(ARCH))
>  
>  # ARCH is supported by kernel
> +ARCH_powerpc64le = powerpc

Given that this one will only be used as an alias, I really think you
should call it "ppc64le" and not with that long a name. Everyone knows
that arch under the name ppc64 anyway so it's not like it would cause
any confusion.

Willy