netdev - Re: [PATCH bpf v2 4/5] bpf: Add kernel function call support in 32-bit ARM for EABI

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Message-ID: <Y2j7J9mJxmKJ4ZpP@shell.armlinux.org.uk>
Date:   Mon, 7 Nov 2022 12:33:43 +0000
From:   "Russell King (Oracle)" <linux@...linux.org.uk>
To:     Yang Jihong <yangjihong1@...wei.com>
Cc:     ast@...nel.org, daniel@...earbox.net, andrii@...nel.org,
        martin.lau@...ux.dev, song@...nel.org, yhs@...com,
        john.fastabend@...il.com, kpsingh@...nel.org, sdf@...gle.com,
        haoluo@...gle.com, jolsa@...nel.org, illusionist.neo@...il.com,
        davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com, mykolal@...com, shuah@...nel.org,
        benjamin.tissoires@...hat.com, memxor@...il.com,
        asavkov@...hat.com, delyank@...com, bpf@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, linux-kselftest@...r.kernel.org
Subject: Re: [PATCH bpf v2 4/5] bpf: Add kernel function call support in
 32-bit ARM for EABI

On Mon, Nov 07, 2022 at 05:20:31PM +0800, Yang Jihong wrote:
> +bool bpf_jit_supports_kfunc_call(void)
> +{
> +	return true;

It would be far cleaner to make this:

	return IS_ENABLED(CONFIG_AEABI);

So userspace knows that it isn't supported on OABI.

-- 
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