Kernel maps first part of 4th GB of memory using PAGE_OFFSET, while upper 128 MB of this 4th GB is left unmapped and is used for Fix-Mapped linear addresses and non-contiguous memory allocation. What is the actual difference between Fix-mapped linear addresses and linear addresses of kernel mapped in the first part of 4th GB of memory?
Thanks in advance - A http://linuxexplained.blogspot.com
