linux-kernel - [PATCH 0/2] bpf, net: Fix smc for CONFIG_BPF

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Message-ID: <cover.1764843476.git.geert@linux-m68k.org>
Date: Thu,  4 Dec 2025 11:29:14 +0100
From: Geert Uytterhoeven <geert@...ux-m68k.org>
To: Kui-Feng Lee <thinker.li@...il.com>,
	Martin KaFai Lau <martin.lau@...ux.dev>,
	"D . Wythe" <alibuda@...ux.alibaba.com>,
	Dust Li <dust.li@...ux.alibaba.com>,
	Alexei Starovoitov <ast@...nel.org>,
	Daniel Borkmann <daniel@...earbox.net>,
	John Fastabend <john.fastabend@...il.com>,
	Sidraya Jayagond <sidraya@...ux.ibm.com>,
	Wenjia Zhang <wenjia@...ux.ibm.com>,
	Mahanta Jambigi <mjambigi@...ux.ibm.com>,
	Tony Lu <tonylu@...ux.alibaba.com>,
	Wen Gu <guwen@...ux.alibaba.com>,
	"David S . Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Simon Horman <horms@...nel.org>
Cc: bpf@...r.kernel.org,
	linux-rdma@...r.kernel.org,
	linux-s390@...r.kernel.org,
	netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Geert Uytterhoeven <geert@...ux-m68k.org>
Subject: [PATCH 0/2] bpf, net: Fix smc for CONFIG_BPF_JIT=n

	Hi all,

If CONFIG_BPF_SYSCALL=y, but CONFIG_BPF_JIT=n (e.g. m68k/allmodconfig),
net/smc/smc_hs_bpf.c fails to build.

This patch series fix the issue in two ways, by:
  1. fixing the dummy variant of register_bpf_struct_ops(),
  2. making SMC_HS_CTRL_BPF depend on BPF_JIT.

So far the broken dummy was never detected: until the introduction of
SMC_HS_CTRL_BPF, all users of register_bpf_struct_ops() depended on both
BPF_SYSCALL and BPF_JIT.

Thanks!

Geert Uytterhoeven (2):
  bpf: Fix register_bpf_struct_ops() dummy
  net: smc: SMC_HS_CTRL_BPF should depend on BPF_JIT

 include/linux/bpf.h | 6 +++++-
 net/smc/Kconfig     | 4 ++--
 2 files changed, 7 insertions(+), 3 deletions(-)

-- 
2.43.0

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds