LXR qemu/tests/libqos/malloc-pc.c

   1/*
   2 * libqos malloc support for PC
   3 *
   4 * Copyright IBM, Corp. 2012-2013
   5 *
   6 * Authors:
   7 *  Anthony Liguori   <aliguori@us.ibm.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 "libqos/malloc-pc.h"
  15#include "libqos/fw_cfg.h"
  16
  17#include "hw/nvram/fw_cfg_keys.h"
  18
  19#include "qemu-common.h"
  20
  21#define PAGE_SIZE (4096)
  22
  23/*
  24 * Mostly for valgrind happiness, but it does offer
  25 * a chokepoint for debugging guest memory leaks, too.
  26 */
  27void pc_alloc_uninit(QGuestAllocator *allocator)
  28{
  29    alloc_uninit(allocator);
  30}
  31
  32QGuestAllocator *pc_alloc_init_flags(QAllocOpts flags)
  33{
  34    QGuestAllocator *s;
  35    uint64_t ram_size;
  36    QFWCFG *fw_cfg = pc_fw_cfg_init();
  37
  38    ram_size = qfw_cfg_get_u64(fw_cfg, FW_CFG_RAM_SIZE);
  39    s = alloc_init_flags(flags, 1 << 20, MIN(ram_size, 0xE0000000));
  40    alloc_set_page_size(s, PAGE_SIZE);
  41
  42    /* clean-up */
  43    g_free(fw_cfg);
  44
  45    return s;
  46}
  47
  48inline QGuestAllocator *pc_alloc_init(void)
  49{
  50    return pc_alloc_init_flags(ALLOC_NO_FLAGS);
  51}
  52