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-ram.c (1409B)

      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#include "qemu/osdep.h"
     14#include "sysemu/hostmem.h"
     15#include "qapi/error.h"
     16#include "qemu/module.h"
     17#include "qom/object_interfaces.h"
     18
     19static void
     20ram_backend_memory_alloc(HostMemoryBackend *backend, Error **errp)
     21{
     22    uint32_t ram_flags;
     23    char *name;
     24
     25    if (!backend->size) {
     26        error_setg(errp, "can't create backend with size 0");
     27        return;
     28    }
     29
     30    name = host_memory_backend_get_name(backend);
     31    ram_flags = backend->share ? RAM_SHARED : 0;
     32    ram_flags |= backend->reserve ? 0 : RAM_NORESERVE;
     33    memory_region_init_ram_flags_nomigrate(&backend->mr, OBJECT(backend), name,
     34                                           backend->size, ram_flags, errp);
     35    g_free(name);
     36}
     37
     38static void
     39ram_backend_class_init(ObjectClass *oc, void *data)
     40{
     41    HostMemoryBackendClass *bc = MEMORY_BACKEND_CLASS(oc);
     42
     43    bc->alloc = ram_backend_memory_alloc;
     44}
     45
     46static const TypeInfo ram_backend_info = {
     47    .name = TYPE_MEMORY_BACKEND_RAM,
     48    .parent = TYPE_MEMORY_BACKEND,
     49    .class_init = ram_backend_class_init,
     50};
     51
     52static void register_types(void)
     53{
     54    type_register_static(&ram_backend_info);
     55}
     56
     57type_init(register_types);