linux-kernel - Re: [PATCH v2 0/7] selftests/nolibc: customize CROSS

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Message-ID: <20230814071850.GC14322@1wt.eu>
Date:   Mon, 14 Aug 2023 09:18:50 +0200
From:   Willy Tarreau <w@....eu>
To:     Zhangjin Wu <falcon@...ylab.org>
Cc:     linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org,
        tanyuan@...ylab.org, thomas@...ch.de
Subject: Re: [PATCH v2 0/7] selftests/nolibc: customize CROSS_COMPILE for all
 supported architectures

On Sun, Aug 13, 2023 at 06:05:03PM +0800, Zhangjin Wu wrote:
> > I think that later I'll further extend XARCH with new variants to
> > support ARMv5 and Thumb2, because we have different code for this
> > and I continue to manually change the CFLAGS to test both.
> >
> 
> Ok, what about further add x86_64 as the default variant for x86 (like ppc for
> powerpc)? and then it is able to only resereve the variables for x86_64. I have
> prepared a patch for this goal in our new tinyconfig patchset, it will further
> avoid adding the same nolibc-test-x86.config and nolibc-test-x86_64.config.

I'm confused, x86 already defaults to x86_64, it's just that it depends
on the .config itself to figure whether to produce a 32- or 64-bit kernel.
But for example it starts qemu in 64-bit mode. Am I missing anything ?

Willy