From: Pablo Neira Ayuso <pablo@netfilter.org>
To: Thomas De Schampheleire <patrickdepinguin@gmail.com>
Cc: netfilter-devel@vger.kernel.org, thomas.de_schampheleire@nokia.com
Subject: Re: [ebtables PATCH 2/2] configure.ac: add option --enable-kernel-64-userland-32
Date: Mon, 24 May 2021 17:26:21 +0200 [thread overview]
Message-ID: <20210524152621.GA21404@salvia> (raw)
In-Reply-To: <20210518181730.13436-2-patrickdepinguin@gmail.com>
On Tue, May 18, 2021 at 08:17:30PM +0200, Thomas De Schampheleire wrote:
> From: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
>
> The ebtables build system seems to assume that 'sparc64' is the
> only case where KERNEL_64_USERSPACE_32 is relevant, but this is not true.
> This situation can happen on many architectures, especially in embedded
> systems. For example, an Aarch64 processor with kernel in 64-bit but
> userland built for 32-bit Arm. Or a 64-bit MIPS Octeon III processor, with
> userland running in the 'n32' ABI.
>
> While it is possible to set CFLAGS in the environment when calling the
> configure script, the caller would need to know to not only specify
> KERNEL_64_USERSPACE_32 but also the EBT_MIN_ALIGN value.
>
> Instead, add a configure option. All internal details can then be handled by
> the configure script.
Are you enabling
CONFIG_NETFILTER_XTABLES_COMPAT
in your kernel build?
KERNEL_64_USERSPACE_32 was deprecated long time ago in favour of
CONFIG_NETFILTER_XTABLES_COMPAT.
next prev parent reply other threads:[~2021-05-24 15:28 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-18 18:17 [ebtables PATCH 1/2] ebtables.h: restore KERNEL_64_USERSPACE_32 checks Thomas De Schampheleire
2021-05-18 18:17 ` [ebtables PATCH 2/2] configure.ac: add option --enable-kernel-64-userland-32 Thomas De Schampheleire
2021-05-24 15:26 ` Pablo Neira Ayuso [this message]
2021-05-25 11:52 ` Thomas De Schampheleire
2021-05-27 19:30 ` Pablo Neira Ayuso
2021-05-28 17:10 ` Florian Westphal
2021-05-31 12:11 ` Thomas De Schampheleire
2021-06-01 14:50 ` Florian Westphal
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