Date: Wed, 4 May 2022 03:51:52 +0700 From: Eugene Grosbein <eugen@grosbein.net> To: Ed Maste <emaste@freebsd.org> Cc: FreeBSD-STABLE Mailing List <freebsd-stable@freebsd.org> Subject: Re: breaking modules Message-ID: <dd949a29-07ef-004b-4fe6-60ad3ff732ad@grosbein.net> In-Reply-To: <CAPyFy2DwP8FFJeezhmvwRRY%2BRtcJ49puU0fsoDXasbu5Lv8giQ@mail.gmail.com> References: <202204281527.23SFRbKU090763@fire.js.berklix.net> <CAPyFy2BAazqi9vqjWwM94qEeF%2Bh5MBTTy94PbbNH-N-5w4_9_w@mail.gmail.com> <5a9a751e-4042-57cb-5f34-e300e0050ad1@grosbein.net> <CAPyFy2DwP8FFJeezhmvwRRY%2BRtcJ49puU0fsoDXasbu5Lv8giQ@mail.gmail.com>
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04.05.2022 2:42, Ed Maste wrote: > On Fri, 29 Apr 2022 at 14:43, Eugene Grosbein <eugen@grosbein.net> wrote: >> >> For example: >> >> if_em https://cgit.freebsd.org/src/commit/?id=c0460cf2e42d2819c1f191a1d6e1b3dc0c7ea010 >> if_epair https://cgit.freebsd.org/src/commit/?id=7a382e744b0b0ba9b51dc34bfa0cd1515f744f25 >> linuxkpi https://cgit.freebsd.org/src/commit/?id=f5a2e7b0e8483bf51519046fd149a6a31acef6b1 > > Ah, yes. We should add a CI task to build all modules outside of the > kernel tree. Also, there are multiple modules that can be built standalone just fine but cannot be loaded with GENERIC kernel. In case of stable/12 examples are: ipfw.ko; if_lagg.ko; if_bridge.ko and bridgestp.ko; linux_common.ko, linprocfs.ko, linux.ko and linux64.ko; h_ertt.ko and cc_chd.ko and surely many others. Noted modules are built standalone without VIMAGE support but GENERIC has options VIMAGE, hence ABI incompatibility. Somewhat hackish workaround is the following line added to /etc/src.conf: CFLAGS+= -DVIMAGE=1 This restores ABI compatibility. Unfortunately, we have no VIMAGE= nor WITH_VIMAGE= knob. See also https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=230009 that contains a patch by ae@
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