Date: Sun, 10 Feb 2008 13:50:24 +0100 From: "Attilio Rao" <attilio@freebsd.org> To: "=?UTF-8?Q?Dag-Erling_Sm=C3=B8rgrav?=" <des@des.no> Cc: arch@freebsd.org Subject: Re: [PATCH] Automatic kernel version module dependencies.. Message-ID: <3bbf2fe10802100450j7279e9d2id6ec97a03f6fb65a@mail.gmail.com> In-Reply-To: <86lk5taway.fsf@ds4.des.no> References: <200802081802.54313.jhb@freebsd.org> <86sl02e736.fsf@ds4.des.no> <20080209.160817.168016724.imp@bsdimp.com> <86lk5taway.fsf@ds4.des.no>
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2008/2/10, Dag-Erling Smørgrav <des@des.no>: > "M. Warner Losh" <imp@bsdimp.com> writes: > > Dag-Erling_Smørgrav <des@des.no> writes: > > > > ...provided they were built from the same config... I think > > > MUTEX_PROFILING has been fixed, but there may still be cases where > > > the ABI changes dependening on kernel options. > > These are usually well documented. But I can't find any in the > > current doc set. Maybe you could point me at options that do this so > > we can document them (and maybe add a #warning when compiling with > > them)? > > > Here's one I found: DEBUG_LOCKS changes the size of struct lock, which > changes the size and layout of struct vnode. Yes, this is a particulary annoying breakage. Next generation lockmgr won't have this problem, though, but I think what really matters for you are past versions, where nothing magic can be done. Attilio -- Peace can only be achieved by understanding - A. Einstein
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