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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hostmem.h (2149B)

      1/*
      2 * QEMU Host Memory Backend
      3 *
      4 * Copyright (C) 2013-2014 Red Hat Inc
      5 *
      6 * Authors:
      7 *   Igor Mammedov <imammedo@redhat.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#ifndef SYSEMU_HOSTMEM_H
     14#define SYSEMU_HOSTMEM_H
     15
     16#include "sysemu/numa.h"
     17#include "qapi/qapi-types-machine.h"
     18#include "qom/object.h"
     19#include "exec/memory.h"
     20#include "qemu/bitmap.h"
     21
     22#define TYPE_MEMORY_BACKEND "memory-backend"
     23OBJECT_DECLARE_TYPE(HostMemoryBackend, HostMemoryBackendClass,
     24                    MEMORY_BACKEND)
     25
     26/* hostmem-ram.c */
     27/**
     28 * @TYPE_MEMORY_BACKEND_RAM:
     29 * name of backend that uses mmap on the anonymous RAM
     30 */
     31
     32#define TYPE_MEMORY_BACKEND_RAM "memory-backend-ram"
     33
     34/* hostmem-file.c */
     35/**
     36 * @TYPE_MEMORY_BACKEND_FILE:
     37 * name of backend that uses mmap on a file descriptor
     38 */
     39#define TYPE_MEMORY_BACKEND_FILE "memory-backend-file"
     40
     41
     42/**
     43 * HostMemoryBackendClass:
     44 * @parent_class: opaque parent class container
     45 */
     46struct HostMemoryBackendClass {
     47    ObjectClass parent_class;
     48
     49    void (*alloc)(HostMemoryBackend *backend, Error **errp);
     50};
     51
     52/**
     53 * @HostMemoryBackend
     54 *
     55 * @parent: opaque parent object container
     56 * @size: amount of memory backend provides
     57 * @mr: MemoryRegion representing host memory belonging to backend
     58 * @prealloc_threads: number of threads to be used for preallocatining RAM
     59 */
     60struct HostMemoryBackend {
     61    /* private */
     62    Object parent;
     63
     64    /* protected */
     65    uint64_t size;
     66    bool merge, dump, use_canonical_path;
     67    bool prealloc, is_mapped, share, reserve;
     68    uint32_t prealloc_threads;
     69    DECLARE_BITMAP(host_nodes, MAX_NODES + 1);
     70    HostMemPolicy policy;
     71
     72    MemoryRegion mr;
     73};
     74
     75bool host_memory_backend_mr_inited(HostMemoryBackend *backend);
     76MemoryRegion *host_memory_backend_get_memory(HostMemoryBackend *backend);
     77
     78void host_memory_backend_set_mapped(HostMemoryBackend *backend, bool mapped);
     79bool host_memory_backend_is_mapped(HostMemoryBackend *backend);
     80size_t host_memory_backend_pagesize(HostMemoryBackend *memdev);
     81char *host_memory_backend_get_name(HostMemoryBackend *backend);
     82
     83#endif