linux-kernel - Re: [PATCH v5 bpf-next 05/15] samples/bpf: use __LINUX_ARM_ARCH_

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Message-ID: <20191011095619.GA3689@khorivan>
Date:   Fri, 11 Oct 2019 12:56:20 +0300
From:   Ivan Khoronzhuk <ivan.khoronzhuk@...aro.org>
To:     Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
Cc:     ast@...nel.org, daniel@...earbox.net, yhs@...com,
        davem@...emloft.net, jakub.kicinski@...ronome.com, hawk@...nel.org,
        john.fastabend@...il.com, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, bpf@...r.kernel.org,
        clang-built-linux@...glegroups.com, ilias.apalodimas@...aro.org
Subject: Re: [PATCH v5 bpf-next 05/15] samples/bpf: use __LINUX_ARM_ARCH__
 selector for arm

On Fri, Oct 11, 2019 at 11:46:54AM +0300, Sergei Shtylyov wrote:
>Hello!
>
>   Sorry, didn't comment on v4...
>
>On 11.10.2019 3:27, Ivan Khoronzhuk wrote:
>
>>For arm, -D__LINUX_ARM_ARCH__=X is min version used as instruction
>>set selector and is absolutely required while parsing some parts of
>>headers. It's present in KBUILD_CFLAGS but not in autoconf.h, so let's
>>retrieve it from and add to programs cflags. In another case errors
>
>   From where? And it's program's, no?
from KBUIL_CFLAGS. it's programs.

>
>>like "SMP is not supported" for armv7 and bunch of other errors are
>>issued resulting to incorrect final object.
>>
>>Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@...aro.org>
>[...]
>
>MBR, Sergei

-- 
Regards,
Ivan Khoronzhuk