Sponsored link
Vyatta –
Linux & Open Source
Alternative to Cisco –
Advanced Routing,
Firewall, VPN, QoS..
Free Download ->
| |||||||||||
Latitude D620Latitude D620Posted Feb 21, 2007 6:23 UTC (Wed) by khim (subscriber, #9252)In reply to: Latitude D620 by ncm Parent article: Dell users demand more Linux options (ZDNet UK)
You can not run 32-bit binary codecs under 64-bit OS, but you can run 32-bit userspace under 64-bit kernel! And both chroot and exec work fine if you are trying to run 64-bit program so you can implement "64-bit jail" for your 64-bit programs. Of course usually it's done the other way around :-) And even nasty nVidia drivers (latest versions) can be used in this mode - but it's sure pain to setup. As for yet-another-execution model... Feel free to do this for userspace, but for kernel it's sheer lunacy: 32-bit kernel does so much work to support more then 2GB of RAM that any benefits from 32-bit pointers will be swallowed by this overhead. It's true for other architectures as well, BTW: PPC64, SPARC64 and so on often are installed with 64bit kernel and 32bit userspace. 64-bit pointers allow to remove a lot of cruft in kernel when you have more then 2GB of RAM - and 4GB of RAM already do not feel like outrageous amount, you can bet that 2 years from now it'll be norm...
(Log in to post comments)
Latitude D620 Posted Feb 21, 2007 7:35 UTC (Wed) by k8to (subscriber, #15413) [Link] Well mostly true, but you can run a 32 bit app with 32 bit nasty win32codecs talking to a 64bit x server. It's a bit muddy what a "64bit os" means in this context. It's basically a matter of having all the 32 bit libraries the program in question needs.
|
|||||||||||