On 06/11/2012 09:47 PM, James Tyrer wrote: <SNIP>
We take as a given that a process can only address 4 GiBs with 32 bits. However it is also a given that hardware does not need to have that much physical memory. I fully understand only the Motorola 32K and the Intel Pentium hardware but I presume that all hardware memory management is similar. In both cases the memory management hardware allows each process to have a virtual address space of 4 GiBs. I have always been disappointed that Linux has diverged from actual UNIX in this regard with the use of a 'flat' memory space. But, then UNIX will only run on systems with hardware memory management and Linux runs on my Television set (yes my Sony 42" flat screen runs the Linux OS). I have always thought that the solution to this problem would be to do both -- support virtual memory (as opposed to flat) when there is memory management hardware and use flat memory when there is not MM hardware.
Ahhh ... that would be: Motorola 68k -- James Tyrer Linux (mostly) From Scratch ___________________________________________________ This message is from the kde-linux mailing list. Account management: https://mail.kde.org/mailman/listinfo/kde-linux. Archives: http://lists.kde.org/. More info: http://www.kde.org/faq.html.
