.TH PHYSALLOC 9.SH NAMEphysalloc, physfree, phystag, physinit, physallocdump \- kernel buddy allocator for physical addresses.SH SYNOPSIS.ta \w'\fLuintmem 'u.de PB.PP.ft L.nf...PBvoid	physinit(uintmem pa, u64int size).PBuintmem	physalloc(u64int size, int *colorp, void *tag).PBvoid*	phystag(uintmem pa).PBvoid	physfree(uintmem pa, u64int size).PBchar*	seprintphysstats(char *s,  char *e).SH DESCRIPTIONThe kernel contains a buddy allocator to hand out large chunks ofmemory outside the kernel heap.  The buddy allocator does notassign virtual addresses. The map is populated by one or more calls to.IR physinit ..I Physallocallocates a region of the given color with the given tag.  If the coloris -1, then any memory color may be used, otherwise only memoryof the given color will be allocated.  The.B tagis user-defined.  Calls to.I phystagmap addresses in the allocation back to.BR tag .Allocated regions are freed with.IR physfree .Stats may be put in a buffer with.IR seprintstats ,which takes a pointer to a buffer and its end as.IR seprint ..SH SOURCE.B /sys/src/nix/k10/physalloc.c.SH "SEE ALSO".IR adr (9nix),.IR qmalloc (9nix),