1/*- 2 * Copyright (C) 2007-2009 Semihalf, Rafal Jaworowski <raj@semihalf.com> 3 * Copyright (C) 2006 Semihalf, Marian Balakowicz <m8@semihalf.com> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: --- 35 unchanged lines hidden (view full) --- 44 * 0xc100_0000 - 0xc100_3fff : reserved for page zero/copy 45 * 0xc100_4000 - 0xc200_3fff : reserved for ptbl bufs 46 * 0xc200_4000 - 0xc200_8fff : guard page + kstack0 47 * 0xc200_9000 - 0xfeef_ffff : actual free KVA space 48 * 0xfef0_0000 - 0xffff_ffff : I/O devices region 49 */ 50 51#include <sys/cdefs.h> |
52__FBSDID("$FreeBSD: head/sys/powerpc/booke/pmap.c 247360 2013-02-26 23:35:27Z attilio $"); |
53 54#include <sys/param.h> 55#include <sys/malloc.h> 56#include <sys/ktr.h> 57#include <sys/proc.h> 58#include <sys/user.h> 59#include <sys/queue.h> 60#include <sys/systm.h> --- 151 unchanged lines hidden (view full) --- 212/**************************************************************************/ 213/* Page table management */ 214/**************************************************************************/ 215 216static struct rwlock_padalign pvh_global_lock; 217 218/* Data for the pv entry allocation mechanism */ 219static uma_zone_t pvzone; |
220static int pv_entry_count = 0, pv_entry_max = 0, pv_entry_high_water = 0; 221 222#define PV_ENTRY_ZONE_MIN 2048 /* min pv entries in uma zone */ 223 224#ifndef PMAP_SHPGPERPROC 225#define PMAP_SHPGPERPROC 200 226#endif 227 --- 1109 unchanged lines hidden (view full) --- 1337 NULL, NULL, UMA_ALIGN_PTR, UMA_ZONE_VM | UMA_ZONE_NOFREE); 1338 1339 TUNABLE_INT_FETCH("vm.pmap.shpgperproc", &shpgperproc); 1340 pv_entry_max = shpgperproc * maxproc + cnt.v_page_count; 1341 1342 TUNABLE_INT_FETCH("vm.pmap.pv_entries", &pv_entry_max); 1343 pv_entry_high_water = 9 * (pv_entry_max / 10); 1344 |
1345 uma_zone_reserve_kva(pvzone, pv_entry_max); |
1346 1347 /* Pre-fill pvzone with initial number of pv entries. */ 1348 uma_prealloc(pvzone, PV_ENTRY_ZONE_MIN); 1349 1350 /* Initialize ptbl allocation. */ 1351 ptbl_init(); 1352} 1353 --- 1823 unchanged lines hidden --- |