292be092ad
The allocator in malloc-pc has been extracted, so it can be used in every arch. This operation showed that both the alloc and free functions can be also generic. Because of this, the QGuestAllocator has been removed from is function to wrap the alloc and free function, and now just contains the allocator parameters. As a result, only the allocator initalizer and unitializer are arch dependent. Signed-off-by: Marc Marí <marc.mari.barcelo@gmail.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
67 lines
1.3 KiB
C
67 lines
1.3 KiB
C
/*
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* libqos malloc support for PC
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*
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* Copyright IBM, Corp. 2012-2013
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*
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* Authors:
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* Anthony Liguori <aliguori@us.ibm.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#include "libqos/malloc-pc.h"
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#include "libqos/fw_cfg.h"
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#define NO_QEMU_PROTOS
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#include "hw/nvram/fw_cfg.h"
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#include "qemu-common.h"
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#include <glib.h>
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#define PAGE_SIZE (4096)
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/*
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* Mostly for valgrind happiness, but it does offer
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* a chokepoint for debugging guest memory leaks, too.
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*/
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void pc_alloc_uninit(QGuestAllocator *allocator)
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{
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alloc_uninit(allocator);
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}
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QGuestAllocator *pc_alloc_init_flags(QAllocOpts flags)
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{
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QGuestAllocator *s = g_malloc0(sizeof(*s));
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uint64_t ram_size;
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QFWCFG *fw_cfg = pc_fw_cfg_init();
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MemBlock *node;
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s->opts = flags;
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s->page_size = PAGE_SIZE;
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ram_size = qfw_cfg_get_u64(fw_cfg, FW_CFG_RAM_SIZE);
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/* Start at 1MB */
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s->start = 1 << 20;
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/* Respect PCI hole */
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s->end = MIN(ram_size, 0xE0000000);
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/* clean-up */
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g_free(fw_cfg);
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QTAILQ_INIT(&s->used);
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QTAILQ_INIT(&s->free);
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node = mlist_new(s->start, s->end - s->start);
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QTAILQ_INSERT_HEAD(&s->free, node, MLIST_ENTNAME);
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return s;
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}
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inline QGuestAllocator *pc_alloc_init(void)
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{
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return pc_alloc_init_flags(ALLOC_NO_FLAGS);
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}
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