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#include <glib.h> 21 22#define PAGE_SIZE (4096) 23 24/* 25 * Mostly for valgrind happiness, but it does offer 26 * a chokepoint for debugging guest memory leaks, too. 27 */ 28void pc_alloc_uninit(QGuestAllocator *allocator) 29{ 30 alloc_uninit(allocator); 31} 32 33QGuestAllocator *pc_alloc_init_flags(QAllocOpts flags) 34{ 35 QGuestAllocator *s; 36 uint64_t ram_size; 37 QFWCFG *fw_cfg = pc_fw_cfg_init(); 38 39 ram_size = qfw_cfg_get_u64(fw_cfg, FW_CFG_RAM_SIZE); 40 s = alloc_init_flags(flags, 1 << 20, MIN(ram_size, 0xE0000000)); 41 alloc_set_page_size(s, PAGE_SIZE); 42 43 /* clean-up */ 44 g_free(fw_cfg); 45 46 return s; 47} 48 49inline QGuestAllocator *pc_alloc_init(void) 50{ 51 return pc_alloc_init_flags(ALLOC_NO_FLAGS); 52} 53