Provides framework for splitting host RAM allocation/ policies into a separate backend that could be used by devices. Initially only legacy RAM backend is provided, which uses memory_region_init_ram() allocator and compatible with every CLI option that affects memory_region_init_ram(). Signed-off-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
61 lines
1.5 KiB
C
61 lines
1.5 KiB
C
/*
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* QEMU Host Memory Backend
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*
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* Copyright (C) 2013-2014 Red Hat Inc
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*
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* Authors:
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* Igor Mammedov <imammedo@redhat.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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#ifndef QEMU_RAM_H
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#define QEMU_RAM_H
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#include "qom/object.h"
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#include "qapi/error.h"
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#include "exec/memory.h"
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#include "qemu/option.h"
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#define TYPE_MEMORY_BACKEND "memory-backend"
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#define MEMORY_BACKEND(obj) \
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OBJECT_CHECK(HostMemoryBackend, (obj), TYPE_MEMORY_BACKEND)
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#define MEMORY_BACKEND_GET_CLASS(obj) \
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OBJECT_GET_CLASS(HostMemoryBackendClass, (obj), TYPE_MEMORY_BACKEND)
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#define MEMORY_BACKEND_CLASS(klass) \
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OBJECT_CLASS_CHECK(HostMemoryBackendClass, (klass), TYPE_MEMORY_BACKEND)
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typedef struct HostMemoryBackend HostMemoryBackend;
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typedef struct HostMemoryBackendClass HostMemoryBackendClass;
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/**
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* HostMemoryBackendClass:
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* @parent_class: opaque parent class container
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*/
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struct HostMemoryBackendClass {
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ObjectClass parent_class;
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};
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/**
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* @HostMemoryBackend
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*
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* @parent: opaque parent object container
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* @size: amount of memory backend provides
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* @id: unique identification string in memdev namespace
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* @mr: MemoryRegion representing host memory belonging to backend
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*/
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struct HostMemoryBackend {
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/* private */
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Object parent;
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/* protected */
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uint64_t size;
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MemoryRegion mr;
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};
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MemoryRegion *host_memory_backend_get_memory(HostMemoryBackend *backend,
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Error **errp);
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#endif
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