Date: Tue, 19 Apr 2011 09:18:58 +1000 (EST) From: Bruce Evans <brde@optusnet.com.au> To: John Baldwin <jhb@FreeBSD.org> Cc: src-committers@FreeBSD.org, Roman Divacky <rdivacky@FreeBSD.org>, Dimitry Andric <dim@FreeBSD.org>, svn-src-head@FreeBSD.org, svn-src-all@FreeBSD.org, Warner Losh <imp@bsdimp.com> Subject: Re: svn commit: r220755 - in head: . contrib/gcc/doc contrib/gcc/objc contrib/libobjc etc/mtree gnu/lib gnu/lib/libobjc gnu/usr.bin/cc gnu/usr.bin/cc/cc1obj gnu/usr.bin/cc/cc_tools gnu/usr.bin/cc/doc s... Message-ID: <20110419091317.C2406@besplex.bde.org> In-Reply-To: <201104181705.18809.jhb@freebsd.org> References: <201104172103.p3HL3Ntb049564@svn.freebsd.org> <201104181448.39401.jhb@freebsd.org> <FCA75B5F-CCE4-431E-BA5E-C5828297F4E3@bsdimp.com> <201104181705.18809.jhb@freebsd.org>
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On Mon, 18 Apr 2011, John Baldwin wrote: > On Monday, April 18, 2011 4:02:10 pm Warner Losh wrote: >> The problem is that this is a technical solution that precludes me from saying "look, I know that this will be OK, so let me do it" I know > nothing has changed that would cause a problem. > > We could easily support some sort of cpp #define to disable the automatic > MODULE_DEPEND() on the kernel. Then you could use > > 'make DEBUG_FLAGS="-DDISABLE_KERNEL_VERSION"' > > or whatever the variable is called when building your kernel modules. You > could even have a DISABLE_KERNEL_VERSION make variable that adds that to > CFLAGS in bsd.kmod.mk and then set it to yes in your /etc/make.conf. > > However, for normal users I think the precaution against loading an 8.x kld > on 7 is worth it. I prefer never loading an a.x kld on b and wouldn't mind if it were enforced (rm -rf /sys/modules...) :-). FreeBSD cluster machines all do this (by expletively undeleting the definition of NO_MODULES so that /boot/kernel has no modules). Modules may still be useful for debugging. Bruce
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