El 17 de desembre de 2011 13:51, Arno Töll <deb...@toell.net> ha escrit: > On 17.12.2011 12:09, Robert Millan wrote: >> - Add additional flavours (which ones? 686, 686-smp ... ? and then >> which ones to provide with D-I?) > > That's what we're doing on Linux and that seems the best compromise.
I think on GNU/Linux many people want to use IA32 version even with CPUs that support AMD mode, because they want IA32 userland for binary compatibility with non-free software. I'm not sure how relevant is this factor but it is unexistant on GNU/kFreeBSD, so I think this should be accounted for when taking Linux as reference. Another likely difference is that kFreeBSD in PAE mode has major drawbacks (in particular we'd have to disable a bunch of drivers, see sys/i386/conf/PAE and URL I pasted before). All in all, I have the impression that using PAE would be unacceptable for the majority of i686 users. > On Linux there are many different kernel flavors where it is being worked > on to reduce their amount. I propose -486 for older PCs and 686-pae for > newer PCs. See [1] on more discussion about the minimal required processor. > > I am not sure if FreeBSD has drawbacks to use a SMP flavored kernel on a > traditional legacy system with one CPU only. If yes there perhaps should > be a -smp version for each too. Good question. TBH I really dislike adding new flavours for PAE unless SMP is merged. Then we'd only have to replace 686-smp with 686-pae instead of adding two new flavours. I don't know if SMP option is really usable on uniprocessor hardware. FWIW, I've tested -smp flavours for 8.3 and 9.0 on an uniprocessor VM and both seem to work fine. Maybe we should discuss this with FreeBSD? We could even propose them to make SMP the default there. > Regarding D-I I guess there is no easy way to tell in > advance whether the system needs a PAE kernel or not, Given that a PAE kernel has important drawbacks (like disabling a lot of drivers), I'd rather leave it to the user to explicitly install those kernels after a normal kFreeBSD is running. -- Robert Millan -- To UNSUBSCRIBE, email to debian-bsd-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/caofdtxnatjqwkpwafzzmue5c_vyropdofdp1eyzwywca6mf...@mail.gmail.com
