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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malloc-pc.c (773B)

      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 "malloc-pc.h"
     15#include "fw_cfg.h"
     16
     17#include "standard-headers/linux/qemu_fw_cfg.h"
     18
     19#include "qemu-common.h"
     20
     21#define ALLOC_PAGE_SIZE (4096)
     22
     23void pc_alloc_init(QGuestAllocator *s, QTestState *qts, QAllocOpts flags)
     24{
     25    uint64_t ram_size;
     26    QFWCFG *fw_cfg = pc_fw_cfg_init(qts);
     27
     28    ram_size = qfw_cfg_get_u64(fw_cfg, FW_CFG_RAM_SIZE);
     29    alloc_init(s, flags, 1 << 20, MIN(ram_size, 0xE0000000), ALLOC_PAGE_SIZE);
     30
     31    /* clean-up */
     32    pc_fw_cfg_uninit(fw_cfg);
     33}