drago01 wrote: > On Thu, Feb 26, 2009 at 11:54 AM, Roberto Ragusa <mail@xxxxxxxxxxxxxxxx> wrote: >> Bill Nottingham wrote: >>> - install x86_64 kernel on 32-bit OS where appropriate >> This is really exciting, but I remember to have read somewhere of >> some compatibility issues. > > Should work (solaris had a similar setup and they supported it) Agreed, I know it should work by default. Just wondering about corner cases (the nvidia rumor, basically). >> In particular, could someone report success/failure for the nvidia >> binary module? >> Is it true that the x86_64 kernel part depends on x86_64 GL/X11 part >> which depends on x86_64 X11, which depends on x86_64 glibc... and so >> the system is basically being entirely switched to x86_64? > > No, but imho if you have a x86_64 capable machine you should be using x86_64 Well, yes, x86_64 is an option, but there could be reasons to live with 32bit userspace; for example if I have a proprietary 32bit app which would require many i386 libs on x86_64, or just to have a development environment where one can compile for i386 without worrying about compiler flags and linking the right stuff, or just to avoid an installation from scratch (upgrade i386->x86_64 is still unsupported, right?). The nvidia problem was, IIRC, that something (arch dependent) is shared by the kernel part and userspace part (sizes of passed data structures, maybe). I was not able to find a reference to this discussion on the net, so I'm asking here if anyone knows about that. It would be bad design by nvidia, sure. >> I think free stuff is compatible or fixable (kvm? fuse? openjdk? ...), > > kvm should work fine, same for fuse. > dunno why you ask about openjdk its just a regular userspace app. You are right. Openjdk is JIT compiled, but there is no particular kernel interaction. >> but there is also widely used proprietary software >> (ATI closed source driver? vmware? ...). > > No idea, but they should be fine too. (besides nobody is stopping you > from using a i586 if you really need/want that or just move to x86_64 > ;) ) Obviously yes. :-) In fact, when I upgraded my laptop to 4GiB months ago, I wondered about the alternatives: a) switch to 32bit PAE b) switch to x86_64 kernel c) switch to x86_64 kernel and apps I discarded c) for upgrade simplicity and avoided trying b) for the nvidia issue we are talking about (so, I'm currently running a) ). Best regards. -- Roberto Ragusa mail at robertoragusa.it -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list
