param.h revision ff78b877ed7acd25e2d384570a938441455d6a95
/** @file
* VirtualBox Parameter Definitions.
*/
/*
* Copyright (C) 2006-2007 Sun Microsystems, Inc.
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
* Clara, CA 95054 USA or visit http://www.sun.com if you need
* additional information or have any questions.
*/
#ifndef ___VBox_param_h
#define ___VBox_param_h
/** @defgroup grp_vbox_param VBox Parameter Definition
* @{
*/
/** The maximum number of pages that can be allocated and mapped
* by various MM, PGM and SUP APIs. */
/** @defgroup grp_vbox_param_mm Memory Monitor Parameters
* @ingroup grp_vbox_param
* @{
*/
/** Initial address of Hypervisor Memory Area.
* MUST BE PAGE TABLE ALIGNED! */
/** The max size of the hypervisor memory area. */
#define MM_HYPER_AREA_MAX_SIZE (40U * _1M) /**< @todo Readjust when floating RAMRANGEs have been implemented. Used to be 20 * _1MB */
/** Maximum number of bytes we can dynamically map into the hypervisor region.
* This must be a power of 2 number of pages!
*/
/** The minimum guest RAM size in bytes. */
/** The maximum guest RAM size in bytes. */
#else
#endif
/** The minimum guest RAM size in MBs. */
/** The maximum guest RAM size in MBs. */
#else
#endif
/** The default size of the below 4GB RAM hole. */
/** @} */
/** @defgroup grp_vbox_param_pgm Page Manager Parameters
* @ingroup grp_vbox_param
* @{
*/
/** The number of handy pages.
* This should be a power of two. */
#define PGM_HANDY_PAGES 128
/** The threshold at which allocation of more handy pages is flagged. */
#define PGM_HANDY_PAGES_SET_FF 32
/** The threshold at which we will allocate more when in ring-3.
* This is must be smaller than both PGM_HANDY_PAGES_SET_FF and
* PGM_HANDY_PAGES_MIN. */
#define PGM_HANDY_PAGES_R3_ALLOC 8
/** The threshold at which we will allocate more when in ring-0 or raw mode.
* The idea is that we should never go below this threshold while in ring-0 or
* raw mode because of PGM_HANDY_PAGES_RZ_TO_R3. However, should this happen and
* we are actually out of memory, we will have 8 page to get out of whatever
* code we're executing.
*
* This is must be smaller than both PGM_HANDY_PAGES_SET_FF and
* PGM_HANDY_PAGES_MIN. */
#define PGM_HANDY_PAGES_RZ_ALLOC 8
/** The threshold at which we force return to R3 ASAP.
* The idea is that this should be large enough to get out of any code and up to
* the main EM loop when we are out of memory.
* This must be less or equal to PGM_HANDY_PAGES_MIN. */
#define PGM_HANDY_PAGES_RZ_TO_R3 24
/** The minimum number of handy pages (after allocation).
* This must be greater or equal to PGM_HANDY_PAGES_SET_FF.
* Another name would be PGM_HANDY_PAGES_EXTRA_RESERVATION or _PARANOIA. :-) */
#define PGM_HANDY_PAGES_MIN 32
/** @} */
/** @defgroup grp_vbox_param_vmm VMM Parameters
* @ingroup grp_vbox_param
* @{
*/
/** VMM stack size. */
#define VMM_STACK_SIZE 8192U
/** @} */
/** @} */
#endif