virtual address vs physical address vs logical address

virtual address:

This is the address virtually seen by the process.

physical address : 

This is the actual hardware physical address .

Lets our system has 4gb of ram 

Every process will assume to have virtual address of 4gb .But actually all the space is not used .

Virtual address is converted to physical address using page tables.

vmalloc-allocate physical address

kmalloc-allocate virtual address 

logical and virtual memory are kind of same .

virtual address range - 2^32 for 32bit os