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Internal interfaces for memory API

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get_system_memory() provides the root of the memory hierarchy.

This interface is intended to be private between memory.c and exec.c.
If this file is included elsewhere, it should be regarded as a bug (or
TODO item).  However, it will be temporarily needed for the conversion
to hierarchical memory routing.

Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Avi Kivity 2011-07-26 14:26:04 +03:00 committed by Anthony Liguori
parent 3d8e6bf977
commit 1c0ffa58af
2 changed files with 43 additions and 0 deletions
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36
exec-memory.h Normal file
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@ -0,0 +1,36 @@
/*
* Internal memory managment interfaces
*
* Copyright 2011 Red Hat, Inc. and/or its affiliates
*
* Authors:
* Avi Kivity <avi@redhat.com>
*
* This work is licensed under the terms of the GNU GPL, version 2. See
* the COPYING file in the top-level directory.
*
*/
#ifndef EXEC_MEMORY_H
#define EXEC_MEMORY_H
/*
* Internal interfaces between memory.c/exec.c/vl.c. Do not #include unless
* you're one of them.
*/
#include "memory.h"
#ifndef CONFIG_USER_ONLY
/* Get the root memory region. This interface should only be used temporarily
* until a proper bus interface is available.
*/
MemoryRegion *get_system_memory(void);
/* Set the root memory region. This region is the system memory map. */
void set_system_memory_map(MemoryRegion *mr);
#endif
#endif

7
memory.c
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@ -12,6 +12,7 @@
*/ */
#include "memory.h" #include "memory.h"
#include "exec-memory.h"
#include <assert.h> #include <assert.h>
typedef struct AddrRange AddrRange; typedef struct AddrRange AddrRange;
@ -703,3 +704,9 @@ void memory_region_del_subregion(MemoryRegion *mr,
QTAILQ_REMOVE(&mr->subregions, subregion, subregions_link); QTAILQ_REMOVE(&mr->subregions, subregion, subregions_link);
memory_region_update_topology(); memory_region_update_topology();
} }
void set_system_memory_map(MemoryRegion *mr)
{
root_memory_region = mr;
memory_region_update_topology();
}