netdev - Re: [PATCH bpf-next] selftests/bpf: enforce no-ALU32 for test_progs-no

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Date:   Tue, 19 Nov 2019 16:55:01 -0800
From:   Alexei Starovoitov <alexei.starovoitov@...il.com>
To:     Yonghong Song <yhs@...com>
Cc:     Andrii Nakryiko <andriin@...com>,
        "bpf@...r.kernel.org" <bpf@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Alexei Starovoitov <ast@...com>,
        "daniel@...earbox.net" <daniel@...earbox.net>,
        "andrii.nakryiko@...il.com" <andrii.nakryiko@...il.com>,
        Kernel Team <Kernel-team@...com>
Subject: Re: [PATCH bpf-next] selftests/bpf: enforce no-ALU32 for test_progs-no_alu32

On Tue, Nov 19, 2019 at 4:32 PM Yonghong Song <yhs@...com> wrote:
>
>
>
> On 11/19/19 4:25 PM, Andrii Nakryiko wrote:
> > With the most recent Clang, alu32 is enabled by default if -mcpu=probe or
> > -mcpu=v3 is specified. Use a separate build rule with -mcpu=v2 to enforce no
>
> A little bit clarification -mcpu=probe may not enable alu32 for old
> kernels. alu32 enabled with -mcpu=probe only if kernel supports jmp32,
> which is merged in January this year.
>
> > ALU32 mode.
> >
> > Suggested-by: Yonghong Song <yhs@...com>
> > Signed-off-by: Andrii Nakryiko <andriin@...com>
>
> With the above nit,
> Acked-by: Yonghong Song <yhs@...com>

Applied. Thanks for the fix.