Hi list, I recently read that the concept of "High Memory" was introduced because certain architectures are capable of physically addressing larger amounts of memory than they can virtually address (physical address space > virtual address space). I also read that nowadays "high Memory" exists only in x86. 1) Why is virtual memory > 896 MB on x86 designated as high memory? AFAIK x86 has 4 GB of virtual address space (=physical address space?) 2) Has the "high Memory" concept got anything to do with PAE (Page Address Extention) feature of x86? 3) Do any other architectures than x86 have the concept of high memory? TIA, Rajat -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
