minix/servers/vm/i386/arch_vmproc.h
Ben Gras 32fbbd370c - pages that points to page directory values of all processes,
shared with the kernel, mapped into kernel address space; 
   kernel is notified of its location. kernel segment size is
   increased to make it fit.
 - map in kernel and other processes that don't have their
   own page table using single 4MB (global) mapping.
 - new sanity check facility: objects that are allocated with
   the slab allocator are, when running with sanity checking on,
   marked readonly until they are explicitly unlocked using the USE()
   macro.
 - another sanity check facility: collect all uses of memory and
   see if they don't overlap with (a) eachother and (b) free memory
 - own munmap() and munmap_text() functions.
 - exec() recovers from out-of-memory conditions properly now; this
   solves some weird exec() behaviour
 - chew off memory from the same side of the chunk as where we
   start scanning, solving some memory fragmentation issues
 - use avl trees for freelist and phys_ranges in regions
 - implement most useful part of munmap()
 - remap() stuff is GQ's for shared memory
2009-09-21 14:49:49 +00:00

22 lines
619 B
C

#include <archtypes.h>
#include <minix/config.h>
#include <minix/const.h>
#include <minix/type.h>
#include <minix/com.h>
#include <minix/ipc.h>
#include <minix/safecopies.h>
#include <timers.h>
struct vm_arch {
struct mem_map vm_seg[NR_LOCAL_SEGS]; /* text, data, stack */
/* vm_data_top points to top of data address space, as visible
* from user-space, in bytes.
* for segments processes this is the same
* as the top of vm_seg[S] segment. for paged processes this
* can be much higher (so more memory is available above the
* stack).
*/
u32_t vm_data_top; /* virtual process space in bytes */
};