post mortem added
create ourvm file to implement vm functions
coremap initialization
Merge branch 'coremap' of github.com:cse451/os161 into kpages
finished coremap and its interface
Merge branch 'coremap' of github.com:cse451/os161 into kpages
Merge branch 'addrspace' of github.com:cse451/os161 into kpages
extend coremap with function get_page_index(vaddr); alloc_kpages and free_kpages implemented, but need to be tested; have compiling errors...  undefined reference to vm_fault, so don't merge if you can not fix it
KASSERTs in alloc_kpages replaced by return NULL
Merge branch 'addrspace' into coremap
Merged coremap into addrspace and fixed a warning in vm.c so it compiles, but panics on startup