From 9f64fbdb774838db1445268fa8c46041fb1c28ab Mon Sep 17 00:00:00 2001 From: =?utf8?q?Valdis=20Kl=20=C4=93=20tnieks?= Date: Sat, 9 May 2020 00:47:19 -0400 Subject: [PATCH] bpfilter: document build requirements for bpfilter_umh It's not intuitively obvious that bpfilter_umh is a statically linked binary. Mention the toolchain requirement in the Kconfig help, so people have an easier time figuring out what's needed. Signed-off-by: Valdis Kletnieks Signed-off-by: Masahiro Yamada --- net/bpfilter/Kconfig | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/net/bpfilter/Kconfig b/net/bpfilter/Kconfig index 045144d..84015ef 100644 --- a/net/bpfilter/Kconfig +++ b/net/bpfilter/Kconfig @@ -13,4 +13,8 @@ config BPFILTER_UMH default m help This builds bpfilter kernel module with embedded user mode helper + + Note: your toolchain must support building static binaries, since + rootfs isn't mounted at the time when __init functions are called + and do_execv won't be able to find the elf interpreter. endif -- 2.7.4