Confusion between _SC_PHYS_PAGES and _SC_AVPHYS_PAGES

[xdelatour]

sysconf(_SC_PHYS_PAGES) returns Sysconf(7)

• _SC_PHYS_PAGES is defined in confname.h (mintlib)
• FreeMiNT returns freephysmem() / PAGESIZE in sys_s_ysconf()
• freephysmem() returns the free physical memory because tot_rsize() is called with flag = 0

Therefore, Sysconf(7) returns the number of currently available pages instead of the number of pages of physical memory.

It's really confusing because we can't change _SC_PHYS_PAGES which is already defined, the only solution is to fix the return value (with something like (tot_rsize(core,1)+tot_rsize(alt,1))/PAGESIZE) and tos.hyp will be wrong while it is currently correct.

[EDIT] I may be confused myself, are free pages unallocated pages (vs. allocated pages) or available/existing pages (vs. non-existing pages)?