forked from Qortal/Brooklyn
2a709f28fa
* 0day explit mitigation * Memory corruption prevention * Privilege escalation prevention * Buffer over flow prevention * File System corruption defense * Thread escape prevention This may very well be the most intensive inclusion to BrooklynR. This will not be part of an x86 suite nor it will be released as tool kit. The security core toolkit will remain part of kernel base.
108 lines
3.5 KiB
C
108 lines
3.5 KiB
C
/**************************************************************************
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*
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* Copyright (c) 2006-2009 VMware, Inc., Palo Alto, CA., USA
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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* USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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/*
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* Authors: Thomas Hellstrom <thellstrom-at-vmware-dot-com>
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*/
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#ifndef _TTM_PLACEMENT_H_
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#define _TTM_PLACEMENT_H_
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#include <linux/types.h>
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/*
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* Memory regions for data placement.
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*/
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#define TTM_PL_SYSTEM 0
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#define TTM_PL_TT 1
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#define TTM_PL_VRAM 2
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#define TTM_PL_PRIV 3
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#define TTM_PL_FLAG_SYSTEM (1 << TTM_PL_SYSTEM)
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#define TTM_PL_FLAG_TT (1 << TTM_PL_TT)
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#define TTM_PL_FLAG_VRAM (1 << TTM_PL_VRAM)
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#define TTM_PL_FLAG_PRIV (1 << TTM_PL_PRIV)
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#define TTM_PL_MASK_MEM 0x0000FFFF
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/*
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* Other flags that affects data placement.
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* TTM_PL_FLAG_CACHED indicates cache-coherent mappings
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* if available.
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* TTM_PL_FLAG_SHARED means that another application may
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* reference the buffer.
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* TTM_PL_FLAG_NO_EVICT means that the buffer may never
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* be evicted to make room for other buffers.
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* TTM_PL_FLAG_TOPDOWN requests to be placed from the
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* top of the memory area, instead of the bottom.
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*/
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#define TTM_PL_FLAG_CACHED (1 << 16)
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#define TTM_PL_FLAG_UNCACHED (1 << 17)
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#define TTM_PL_FLAG_WC (1 << 18)
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#define TTM_PL_FLAG_NO_EVICT (1 << 21)
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#define TTM_PL_FLAG_TOPDOWN (1 << 22)
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#define TTM_PL_MASK_CACHING (TTM_PL_FLAG_CACHED | \
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TTM_PL_FLAG_UNCACHED | \
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TTM_PL_FLAG_WC)
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#define TTM_PL_MASK_MEMTYPE (TTM_PL_MASK_MEM | TTM_PL_MASK_CACHING)
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/**
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* struct ttm_place
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*
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* @fpfn: first valid page frame number to put the object
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* @lpfn: last valid page frame number to put the object
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* @flags: memory domain and caching flags for the object
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*
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* Structure indicating a possible place to put an object.
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*/
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struct ttm_place {
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unsigned fpfn;
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unsigned lpfn;
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uint32_t flags;
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};
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/**
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* struct ttm_placement
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*
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* @num_placement: number of preferred placements
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* @placement: preferred placements
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* @num_busy_placement: number of preferred placements when need to evict buffer
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* @busy_placement: preferred placements when need to evict buffer
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*
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* Structure indicating the placement you request for an object.
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*/
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struct ttm_placement {
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unsigned num_placement;
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const struct ttm_place *placement;
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unsigned num_busy_placement;
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const struct ttm_place *busy_placement;
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};
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#endif
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