cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
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memory_mapping.h (2576B)

      1/*
      2 * QEMU memory mapping
      3 *
      4 * Copyright Fujitsu, Corp. 2011, 2012
      5 *
      6 * Authors:
      7 *     Wen Congyang <wency@cn.fujitsu.com>
      8 *
      9 * This work is licensed under the terms of the GNU GPL, version 2 or later.
     10 * See the COPYING file in the top-level directory.
     11 *
     12 */
     13
     14#ifndef MEMORY_MAPPING_H
     15#define MEMORY_MAPPING_H
     16
     17#include "qemu/queue.h"
     18#include "exec/cpu-defs.h"
     19#include "exec/memory.h"
     20
     21typedef struct GuestPhysBlock {
     22    /* visible to guest, reflects PCI hole, etc */
     23    hwaddr target_start;
     24
     25    /* implies size */
     26    hwaddr target_end;
     27
     28    /* points into host memory */
     29    uint8_t *host_addr;
     30
     31    /* points to the MemoryRegion that this block belongs to */
     32    MemoryRegion *mr;
     33
     34    QTAILQ_ENTRY(GuestPhysBlock) next;
     35} GuestPhysBlock;
     36
     37/* point-in-time snapshot of guest-visible physical mappings */
     38typedef struct GuestPhysBlockList {
     39    unsigned num;
     40    QTAILQ_HEAD(, GuestPhysBlock) head;
     41} GuestPhysBlockList;
     42
     43/* The physical and virtual address in the memory mapping are contiguous. */
     44typedef struct MemoryMapping {
     45    hwaddr phys_addr;
     46    target_ulong virt_addr;
     47    ram_addr_t length;
     48    QTAILQ_ENTRY(MemoryMapping) next;
     49} MemoryMapping;
     50
     51struct MemoryMappingList {
     52    unsigned int num;
     53    MemoryMapping *last_mapping;
     54    QTAILQ_HEAD(, MemoryMapping) head;
     55};
     56
     57/*
     58 * add or merge the memory region [phys_addr, phys_addr + length) into the
     59 * memory mapping's list. The region's virtual address starts with virt_addr,
     60 * and is contiguous. The list is sorted by phys_addr.
     61 */
     62void memory_mapping_list_add_merge_sorted(MemoryMappingList *list,
     63                                          hwaddr phys_addr,
     64                                          hwaddr virt_addr,
     65                                          ram_addr_t length);
     66
     67void memory_mapping_list_free(MemoryMappingList *list);
     68
     69void memory_mapping_list_init(MemoryMappingList *list);
     70
     71void guest_phys_blocks_free(GuestPhysBlockList *list);
     72void guest_phys_blocks_init(GuestPhysBlockList *list);
     73void guest_phys_blocks_append(GuestPhysBlockList *list);
     74
     75void qemu_get_guest_memory_mapping(MemoryMappingList *list,
     76                                   const GuestPhysBlockList *guest_phys_blocks,
     77                                   Error **errp);
     78
     79/* get guest's memory mapping without do paging(virtual address is 0). */
     80void qemu_get_guest_simple_memory_mapping(MemoryMappingList *list,
     81                                  const GuestPhysBlockList *guest_phys_blocks);
     82
     83void memory_mapping_filter(MemoryMappingList *list, int64_t begin,
     84                           int64_t length);
     85
     86#endif