Adding qemu as a submodule of KVMFORNFV

This Patch includes the changes to add qemu as a submodule to
kvmfornfv repo and make use of the updated latest qemu for the
execution of all testcase
Change-Id: I1280af507a857675c7f81d30c95255635667bdd7
Signed-off-by:RajithaY<rajithax.yerrumsetty@intel.com>

1 files changed, 0 insertions, 1438 deletions

diff --git a/qemu/include/exec/memory.h b/qemu/include/exec/memory.h
deleted file mode 100644
index e2a3e9953..000000000
--- a/qemu/include/exec/memory.h
+++ /dev/null
@@ -1,1438 +0,0 @@
-/*
- * Physical memory management API
- *
- * 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 MEMORY_H
-#define MEMORY_H
-
-#ifndef CONFIG_USER_ONLY
-
-#define DIRTY_MEMORY_VGA       0
-#define DIRTY_MEMORY_CODE      1
-#define DIRTY_MEMORY_MIGRATION 2
-#define DIRTY_MEMORY_NUM       3        /* num of dirty bits */
-
-#include "exec/cpu-common.h"
-#ifndef CONFIG_USER_ONLY
-#include "exec/hwaddr.h"
-#endif
-#include "exec/memattrs.h"
-#include "qemu/queue.h"
-#include "qemu/int128.h"
-#include "qemu/notify.h"
-#include "qom/object.h"
-#include "qemu/rcu.h"
-
-#define MAX_PHYS_ADDR_SPACE_BITS 62
-#define MAX_PHYS_ADDR            (((hwaddr)1 << MAX_PHYS_ADDR_SPACE_BITS) - 1)
-
-#define TYPE_MEMORY_REGION "qemu:memory-region"
-#define MEMORY_REGION(obj) \
-        OBJECT_CHECK(MemoryRegion, (obj), TYPE_MEMORY_REGION)
-
-typedef struct MemoryRegionOps MemoryRegionOps;
-typedef struct MemoryRegionMmio MemoryRegionMmio;
-
-struct MemoryRegionMmio {
-    CPUReadMemoryFunc *read[3];
-    CPUWriteMemoryFunc *write[3];
-};
-
-typedef struct IOMMUTLBEntry IOMMUTLBEntry;
-
-/* See address_space_translate: bit 0 is read, bit 1 is write.  */
-typedef enum {
-    IOMMU_NONE = 0,
-    IOMMU_RO   = 1,
-    IOMMU_WO   = 2,
-    IOMMU_RW   = 3,
-} IOMMUAccessFlags;
-
-struct IOMMUTLBEntry {
-    AddressSpace    *target_as;
-    hwaddr           iova;
-    hwaddr           translated_addr;
-    hwaddr           addr_mask;  /* 0xfff = 4k translation */
-    IOMMUAccessFlags perm;
-};
-
-/* New-style MMIO accessors can indicate that the transaction failed.
- * A zero (MEMTX_OK) response means success; anything else is a failure
- * of some kind. The memory subsystem will bitwise-OR together results
- * if it is synthesizing an operation from multiple smaller accesses.
- */
-#define MEMTX_OK 0
-#define MEMTX_ERROR             (1U << 0) /* device returned an error */
-#define MEMTX_DECODE_ERROR      (1U << 1) /* nothing at that address */
-typedef uint32_t MemTxResult;
-
-/*
- * Memory region callbacks
- */
-struct MemoryRegionOps {
-    /* Read from the memory region. @addr is relative to @mr; @size is
-     * in bytes. */
-    uint64_t (*read)(void *opaque,
-                     hwaddr addr,
-                     unsigned size);
-    /* Write to the memory region. @addr is relative to @mr; @size is
-     * in bytes. */
-    void (*write)(void *opaque,
-                  hwaddr addr,
-                  uint64_t data,
-                  unsigned size);
-
-    MemTxResult (*read_with_attrs)(void *opaque,
-                                   hwaddr addr,
-                                   uint64_t *data,
-                                   unsigned size,
-                                   MemTxAttrs attrs);
-    MemTxResult (*write_with_attrs)(void *opaque,
-                                    hwaddr addr,
-                                    uint64_t data,
-                                    unsigned size,
-                                    MemTxAttrs attrs);
-
-    enum device_endian endianness;
-    /* Guest-visible constraints: */
-    struct {
-        /* If nonzero, specify bounds on access sizes beyond which a machine
-         * check is thrown.
-         */
-        unsigned min_access_size;
-        unsigned max_access_size;
-        /* If true, unaligned accesses are supported.  Otherwise unaligned
-         * accesses throw machine checks.
-         */
-         bool unaligned;
-        /*
-         * If present, and returns #false, the transaction is not accepted
-         * by the device (and results in machine dependent behaviour such
-         * as a machine check exception).
-         */
-        bool (*accepts)(void *opaque, hwaddr addr,
-                        unsigned size, bool is_write);
-    } valid;
-    /* Internal implementation constraints: */
-    struct {
-        /* If nonzero, specifies the minimum size implemented.  Smaller sizes
-         * will be rounded upwards and a partial result will be returned.
-         */
-        unsigned min_access_size;
-        /* If nonzero, specifies the maximum size implemented.  Larger sizes
-         * will be done as a series of accesses with smaller sizes.
-         */
-        unsigned max_access_size;
-        /* If true, unaligned accesses are supported.  Otherwise all accesses
-         * are converted to (possibly multiple) naturally aligned accesses.
-         */
-        bool unaligned;
-    } impl;
-
-    /* If .read and .write are not present, old_mmio may be used for
-     * backwards compatibility with old mmio registration
-     */
-    const MemoryRegionMmio old_mmio;
-};
-
-typedef struct MemoryRegionIOMMUOps MemoryRegionIOMMUOps;
-
-struct MemoryRegionIOMMUOps {
-    /* Return a TLB entry that contains a given address. */
-    IOMMUTLBEntry (*translate)(MemoryRegion *iommu, hwaddr addr, bool is_write);
-};
-
-typedef struct CoalescedMemoryRange CoalescedMemoryRange;
-typedef struct MemoryRegionIoeventfd MemoryRegionIoeventfd;
-
-struct MemoryRegion {
-    Object parent_obj;
-
-    /* All fields are private - violators will be prosecuted */
-
-    /* The following fields should fit in a cache line */
-    bool romd_mode;
-    bool ram;
-    bool subpage;
-    bool readonly; /* For RAM regions */
-    bool rom_device;
-    bool flush_coalesced_mmio;
-    bool global_locking;
-    uint8_t dirty_log_mask;
-    RAMBlock *ram_block;
-    Object *owner;
-    const MemoryRegionIOMMUOps *iommu_ops;
-
-    const MemoryRegionOps *ops;
-    void *opaque;
-    MemoryRegion *container;
-    Int128 size;
-    hwaddr addr;
-    void (*destructor)(MemoryRegion *mr);
-    uint64_t align;
-    bool terminates;
-    bool skip_dump;
-    bool enabled;
-    bool warning_printed; /* For reservations */
-    uint8_t vga_logging_count;
-    MemoryRegion *alias;
-    hwaddr alias_offset;
-    int32_t priority;
-    bool may_overlap;
-    QTAILQ_HEAD(subregions, MemoryRegion) subregions;
-    QTAILQ_ENTRY(MemoryRegion) subregions_link;
-    QTAILQ_HEAD(coalesced_ranges, CoalescedMemoryRange) coalesced;
-    const char *name;
-    unsigned ioeventfd_nb;
-    MemoryRegionIoeventfd *ioeventfds;
-    NotifierList iommu_notify;
-};
-
-/**
- * MemoryListener: callbacks structure for updates to the physical memory map
- *
- * Allows a component to adjust to changes in the guest-visible memory map.
- * Use with memory_listener_register() and memory_listener_unregister().
- */
-struct MemoryListener {
-    void (*begin)(MemoryListener *listener);
-    void (*commit)(MemoryListener *listener);
-    void (*region_add)(MemoryListener *listener, MemoryRegionSection *section);
-    void (*region_del)(MemoryListener *listener, MemoryRegionSection *section);
-    void (*region_nop)(MemoryListener *listener, MemoryRegionSection *section);
-    void (*log_start)(MemoryListener *listener, MemoryRegionSection *section,
-                      int old, int new);
-    void (*log_stop)(MemoryListener *listener, MemoryRegionSection *section,
-                     int old, int new);
-    void (*log_sync)(MemoryListener *listener, MemoryRegionSection *section);
-    void (*log_global_start)(MemoryListener *listener);
-    void (*log_global_stop)(MemoryListener *listener);
-    void (*eventfd_add)(MemoryListener *listener, MemoryRegionSection *section,
-                        bool match_data, uint64_t data, EventNotifier *e);
-    void (*eventfd_del)(MemoryListener *listener, MemoryRegionSection *section,
-                        bool match_data, uint64_t data, EventNotifier *e);
-    void (*coalesced_mmio_add)(MemoryListener *listener, MemoryRegionSection *section,
-                               hwaddr addr, hwaddr len);
-    void (*coalesced_mmio_del)(MemoryListener *listener, MemoryRegionSection *section,
-                               hwaddr addr, hwaddr len);
-    /* Lower = earlier (during add), later (during del) */
-    unsigned priority;
-    AddressSpace *address_space_filter;
-    QTAILQ_ENTRY(MemoryListener) link;
-};
-
-/**
- * AddressSpace: describes a mapping of addresses to #MemoryRegion objects
- */
-struct AddressSpace {
-    /* All fields are private. */
-    struct rcu_head rcu;
-    char *name;
-    MemoryRegion *root;
-    int ref_count;
-    bool malloced;
-
-    /* Accessed via RCU.  */
-    struct FlatView *current_map;
-
-    int ioeventfd_nb;
-    struct MemoryRegionIoeventfd *ioeventfds;
-    struct AddressSpaceDispatch *dispatch;
-    struct AddressSpaceDispatch *next_dispatch;
-    MemoryListener dispatch_listener;
-
-    QTAILQ_ENTRY(AddressSpace) address_spaces_link;
-};
-
-/**
- * MemoryRegionSection: describes a fragment of a #MemoryRegion
- *
- * @mr: the region, or %NULL if empty
- * @address_space: the address space the region is mapped in
- * @offset_within_region: the beginning of the section, relative to @mr's start
- * @size: the size of the section; will not exceed @mr's boundaries
- * @offset_within_address_space: the address of the first byte of the section
- *     relative to the region's address space
- * @readonly: writes to this section are ignored
- */
-struct MemoryRegionSection {
-    MemoryRegion *mr;
-    AddressSpace *address_space;
-    hwaddr offset_within_region;
-    Int128 size;
-    hwaddr offset_within_address_space;
-    bool readonly;
-};
-
-/**
- * memory_region_init: Initialize a memory region
- *
- * The region typically acts as a container for other memory regions.  Use
- * memory_region_add_subregion() to add subregions.
- *
- * @mr: the #MemoryRegion to be initialized
- * @owner: the object that tracks the region's reference count
- * @name: used for debugging; not visible to the user or ABI
- * @size: size of the region; any subregions beyond this size will be clipped
- */
-void memory_region_init(MemoryRegion *mr,
-                        struct Object *owner,
-                        const char *name,
-                        uint64_t size);
-
-/**
- * memory_region_ref: Add 1 to a memory region's reference count
- *
- * Whenever memory regions are accessed outside the BQL, they need to be
- * preserved against hot-unplug.  MemoryRegions actually do not have their
- * own reference count; they piggyback on a QOM object, their "owner".
- * This function adds a reference to the owner.
- *
- * All MemoryRegions must have an owner if they can disappear, even if the
- * device they belong to operates exclusively under the BQL.  This is because
- * the region could be returned at any time by memory_region_find, and this
- * is usually under guest control.
- *
- * @mr: the #MemoryRegion
- */
-void memory_region_ref(MemoryRegion *mr);
-
-/**
- * memory_region_unref: Remove 1 to a memory region's reference count
- *
- * Whenever memory regions are accessed outside the BQL, they need to be
- * preserved against hot-unplug.  MemoryRegions actually do not have their
- * own reference count; they piggyback on a QOM object, their "owner".
- * This function removes a reference to the owner and possibly destroys it.
- *
- * @mr: the #MemoryRegion
- */
-void memory_region_unref(MemoryRegion *mr);
-
-/**
- * memory_region_init_io: Initialize an I/O memory region.
- *
- * Accesses into the region will cause the callbacks in @ops to be called.
- * if @size is nonzero, subregions will be clipped to @size.
- *
- * @mr: the #MemoryRegion to be initialized.
- * @owner: the object that tracks the region's reference count
- * @ops: a structure containing read and write callbacks to be used when
- *       I/O is performed on the region.
- * @opaque: passed to the read and write callbacks of the @ops structure.
- * @name: used for debugging; not visible to the user or ABI
- * @size: size of the region.
- */
-void memory_region_init_io(MemoryRegion *mr,
-                           struct Object *owner,
-                           const MemoryRegionOps *ops,
-                           void *opaque,
-                           const char *name,
-                           uint64_t size);
-
-/**
- * memory_region_init_ram:  Initialize RAM memory region.  Accesses into the
- *                          region will modify memory directly.
- *
- * @mr: the #MemoryRegion to be initialized.
- * @owner: the object that tracks the region's reference count
- * @name: the name of the region.
- * @size: size of the region.
- * @errp: pointer to Error*, to store an error if it happens.
- */
-void memory_region_init_ram(MemoryRegion *mr,
-                            struct Object *owner,
-                            const char *name,
-                            uint64_t size,
-                            Error **errp);
-
-/**
- * memory_region_init_resizeable_ram:  Initialize memory region with resizeable
- *                                     RAM.  Accesses into the region will
- *                                     modify memory directly.  Only an initial
- *                                     portion of this RAM is actually used.
- *                                     The used size can change across reboots.
- *
- * @mr: the #MemoryRegion to be initialized.
- * @owner: the object that tracks the region's reference count
- * @name: the name of the region.
- * @size: used size of the region.
- * @max_size: max size of the region.
- * @resized: callback to notify owner about used size change.
- * @errp: pointer to Error*, to store an error if it happens.
- */
-void memory_region_init_resizeable_ram(MemoryRegion *mr,
-                                       struct Object *owner,
-                                       const char *name,
-                                       uint64_t size,
-                                       uint64_t max_size,
-                                       void (*resized)(const char*,
-                                                       uint64_t length,
-                                                       void *host),
-                                       Error **errp);
-#ifdef __linux__
-/**
- * memory_region_init_ram_from_file:  Initialize RAM memory region with a
- *                                    mmap-ed backend.
- *
- * @mr: the #MemoryRegion to be initialized.
- * @owner: the object that tracks the region's reference count
- * @name: the name of the region.
- * @size: size of the region.
- * @share: %true if memory must be mmaped with the MAP_SHARED flag
- * @path: the path in which to allocate the RAM.
- * @errp: pointer to Error*, to store an error if it happens.
- */
-void memory_region_init_ram_from_file(MemoryRegion *mr,
-                                      struct Object *owner,
-                                      const char *name,
-                                      uint64_t size,
-                                      bool share,
-                                      const char *path,
-                                      Error **errp);
-#endif
-
-/**
- * memory_region_init_ram_ptr:  Initialize RAM memory region from a
- *                              user-provided pointer.  Accesses into the
- *                              region will modify memory directly.
- *
- * @mr: the #MemoryRegion to be initialized.
- * @owner: the object that tracks the region's reference count
- * @name: the name of the region.
- * @size: size of the region.
- * @ptr: memory to be mapped; must contain at least @size bytes.
- */
-void memory_region_init_ram_ptr(MemoryRegion *mr,
-                                struct Object *owner,
-                                const char *name,
-                                uint64_t size,
-                                void *ptr);
-
-/**
- * memory_region_init_alias: Initialize a memory region that aliases all or a
- *                           part of another memory region.
- *
- * @mr: the #MemoryRegion to be initialized.
- * @owner: the object that tracks the region's reference count
- * @name: used for debugging; not visible to the user or ABI
- * @orig: the region to be referenced; @mr will be equivalent to
- *        @orig between @offset and @offset + @size - 1.
- * @offset: start of the section in @orig to be referenced.
- * @size: size of the region.
- */
-void memory_region_init_alias(MemoryRegion *mr,
-                              struct Object *owner,
-                              const char *name,
-                              MemoryRegion *orig,
-                              hwaddr offset,
-                              uint64_t size);
-
-/**
- * memory_region_init_rom_device:  Initialize a ROM memory region.  Writes are
- *                                 handled via callbacks.
- *
- * If NULL callbacks pointer is given, then I/O space is not supposed to be
- * handled by QEMU itself. Any access via the memory API will cause an abort().
- *
- * @mr: the #MemoryRegion to be initialized.
- * @owner: the object that tracks the region's reference count
- * @ops: callbacks for write access handling.
- * @name: the name of the region.
- * @size: size of the region.
- * @errp: pointer to Error*, to store an error if it happens.
- */
-void memory_region_init_rom_device(MemoryRegion *mr,
-                                   struct Object *owner,
-                                   const MemoryRegionOps *ops,
-                                   void *opaque,
-                                   const char *name,
-                                   uint64_t size,
-                                   Error **errp);
-
-/**
- * memory_region_init_reservation: Initialize a memory region that reserves
- *                                 I/O space.
- *
- * A reservation region primariy serves debugging purposes.  It claims I/O
- * space that is not supposed to be handled by QEMU itself.  Any access via
- * the memory API will cause an abort().
- * This function is deprecated. Use memory_region_init_io() with NULL
- * callbacks instead.
- *
- * @mr: the #MemoryRegion to be initialized
- * @owner: the object that tracks the region's reference count
- * @name: used for debugging; not visible to the user or ABI
- * @size: size of the region.
- */
-static inline void memory_region_init_reservation(MemoryRegion *mr,
-                                    Object *owner,
-                                    const char *name,
-                                    uint64_t size)
-{
-    memory_region_init_io(mr, owner, NULL, mr, name, size);
-}
-
-/**
- * memory_region_init_iommu: Initialize a memory region that translates
- * addresses
- *
- * An IOMMU region translates addresses and forwards accesses to a target
- * memory region.
- *
- * @mr: the #MemoryRegion to be initialized
- * @owner: the object that tracks the region's reference count
- * @ops: a function that translates addresses into the @target region
- * @name: used for debugging; not visible to the user or ABI
- * @size: size of the region.
- */
-void memory_region_init_iommu(MemoryRegion *mr,
-                              struct Object *owner,
-                              const MemoryRegionIOMMUOps *ops,
-                              const char *name,
-                              uint64_t size);
-
-/**
- * memory_region_owner: get a memory region's owner.
- *
- * @mr: the memory region being queried.
- */
-struct Object *memory_region_owner(MemoryRegion *mr);
-
-/**
- * memory_region_size: get a memory region's size.
- *
- * @mr: the memory region being queried.
- */
-uint64_t memory_region_size(MemoryRegion *mr);
-
-/**
- * memory_region_is_ram: check whether a memory region is random access
- *
- * Returns %true is a memory region is random access.
- *
- * @mr: the memory region being queried
- */
-static inline bool memory_region_is_ram(MemoryRegion *mr)
-{
-    return mr->ram;
-}
-
-/**
- * memory_region_is_skip_dump: check whether a memory region should not be
- *                             dumped
- *
- * Returns %true is a memory region should not be dumped(e.g. VFIO BAR MMAP).
- *
- * @mr: the memory region being queried
- */
-bool memory_region_is_skip_dump(MemoryRegion *mr);
-
-/**
- * memory_region_set_skip_dump: Set skip_dump flag, dump will ignore this memory
- *                              region
- *
- * @mr: the memory region being queried
- */
-void memory_region_set_skip_dump(MemoryRegion *mr);
-
-/**
- * memory_region_is_romd: check whether a memory region is in ROMD mode
- *
- * Returns %true if a memory region is a ROM device and currently set to allow
- * direct reads.
- *
- * @mr: the memory region being queried
- */
-static inline bool memory_region_is_romd(MemoryRegion *mr)
-{
-    return mr->rom_device && mr->romd_mode;
-}
-
-/**
- * memory_region_is_iommu: check whether a memory region is an iommu
- *
- * Returns %true is a memory region is an iommu.
- *
- * @mr: the memory region being queried
- */
-static inline bool memory_region_is_iommu(MemoryRegion *mr)
-{
-    return mr->iommu_ops;
-}
-
-
-/**
- * memory_region_notify_iommu: notify a change in an IOMMU translation entry.
- *
- * @mr: the memory region that was changed
- * @entry: the new entry in the IOMMU translation table.  The entry
- *         replaces all old entries for the same virtual I/O address range.
- *         Deleted entries have .@perm == 0.
- */
-void memory_region_notify_iommu(MemoryRegion *mr,
-                                IOMMUTLBEntry entry);
-
-/**
- * memory_region_register_iommu_notifier: register a notifier for changes to
- * IOMMU translation entries.
- *
- * @mr: the memory region to observe
- * @n: the notifier to be added; the notifier receives a pointer to an
- *     #IOMMUTLBEntry as the opaque value; the pointer ceases to be
- *     valid on exit from the notifier.
- */
-void memory_region_register_iommu_notifier(MemoryRegion *mr, Notifier *n);
-
-/**
- * memory_region_iommu_replay: replay existing IOMMU translations to
- * a notifier
- *
- * @mr: the memory region to observe
- * @n: the notifier to which to replay iommu mappings
- * @granularity: Minimum page granularity to replay notifications for
- * @is_write: Whether to treat the replay as a translate "write"
- *     through the iommu
- */
-void memory_region_iommu_replay(MemoryRegion *mr, Notifier *n,
-                                hwaddr granularity, bool is_write);
-
-/**
- * memory_region_unregister_iommu_notifier: unregister a notifier for
- * changes to IOMMU translation entries.
- *
- * @n: the notifier to be removed.
- */
-void memory_region_unregister_iommu_notifier(Notifier *n);
-
-/**
- * memory_region_name: get a memory region's name
- *
- * Returns the string that was used to initialize the memory region.
- *
- * @mr: the memory region being queried
- */
-const char *memory_region_name(const MemoryRegion *mr);
-
-/**
- * memory_region_is_logging: return whether a memory region is logging writes
- *
- * Returns %true if the memory region is logging writes for the given client
- *
- * @mr: the memory region being queried
- * @client: the client being queried
- */
-bool memory_region_is_logging(MemoryRegion *mr, uint8_t client);
-
-/**
- * memory_region_get_dirty_log_mask: return the clients for which a
- * memory region is logging writes.
- *
- * Returns a bitmap of clients, in which the DIRTY_MEMORY_* constants
- * are the bit indices.
- *
- * @mr: the memory region being queried
- */
-uint8_t memory_region_get_dirty_log_mask(MemoryRegion *mr);
-
-/**
- * memory_region_is_rom: check whether a memory region is ROM
- *
- * Returns %true is a memory region is read-only memory.
- *
- * @mr: the memory region being queried
- */
-static inline bool memory_region_is_rom(MemoryRegion *mr)
-{
-    return mr->ram && mr->readonly;
-}
-
-
-/**
- * memory_region_get_fd: Get a file descriptor backing a RAM memory region.
- *
- * Returns a file descriptor backing a file-based RAM memory region,
- * or -1 if the region is not a file-based RAM memory region.
- *
- * @mr: the RAM or alias memory region being queried.
- */
-int memory_region_get_fd(MemoryRegion *mr);
-
-/**
- * memory_region_get_ram_ptr: Get a pointer into a RAM memory region.
- *
- * Returns a host pointer to a RAM memory region (created with
- * memory_region_init_ram() or memory_region_init_ram_ptr()).
- *
- * Use with care; by the time this function returns, the returned pointer is
- * not protected by RCU anymore.  If the caller is not within an RCU critical
- * section and does not hold the iothread lock, it must have other means of
- * protecting the pointer, such as a reference to the region that includes
- * the incoming ram_addr_t.
- *
- * @mr: the memory region being queried.
- */
-void *memory_region_get_ram_ptr(MemoryRegion *mr);
-
-/* memory_region_ram_resize: Resize a RAM region.
- *
- * Only legal before guest might have detected the memory size: e.g. on
- * incoming migration, or right after reset.
- *
- * @mr: a memory region created with @memory_region_init_resizeable_ram.
- * @newsize: the new size the region
- * @errp: pointer to Error*, to store an error if it happens.
- */
-void memory_region_ram_resize(MemoryRegion *mr, ram_addr_t newsize,
-                              Error **errp);
-
-/**
- * memory_region_set_log: Turn dirty logging on or off for a region.
- *
- * Turns dirty logging on or off for a specified client (display, migration).
- * Only meaningful for RAM regions.
- *
- * @mr: the memory region being updated.
- * @log: whether dirty logging is to be enabled or disabled.
- * @client: the user of the logging information; %DIRTY_MEMORY_VGA only.
- */
-void memory_region_set_log(MemoryRegion *mr, bool log, unsigned client);
-
-/**
- * memory_region_get_dirty: Check whether a range of bytes is dirty
- *                          for a specified client.
- *
- * Checks whether a range of bytes has been written to since the last
- * call to memory_region_reset_dirty() with the same @client.  Dirty logging
- * must be enabled.
- *
- * @mr: the memory region being queried.
- * @addr: the address (relative to the start of the region) being queried.
- * @size: the size of the range being queried.
- * @client: the user of the logging information; %DIRTY_MEMORY_MIGRATION or
- *          %DIRTY_MEMORY_VGA.
- */
-bool memory_region_get_dirty(MemoryRegion *mr, hwaddr addr,
-                             hwaddr size, unsigned client);
-
-/**
- * memory_region_set_dirty: Mark a range of bytes as dirty in a memory region.
- *
- * Marks a range of bytes as dirty, after it has been dirtied outside
- * guest code.
- *
- * @mr: the memory region being dirtied.
- * @addr: the address (relative to the start of the region) being dirtied.
- * @size: size of the range being dirtied.
- */
-void memory_region_set_dirty(MemoryRegion *mr, hwaddr addr,
-                             hwaddr size);
-
-/**
- * memory_region_test_and_clear_dirty: Check whether a range of bytes is dirty
- *                                     for a specified client. It clears them.
- *
- * Checks whether a range of bytes has been written to since the last
- * call to memory_region_reset_dirty() with the same @client.  Dirty logging
- * must be enabled.
- *
- * @mr: the memory region being queried.
- * @addr: the address (relative to the start of the region) being queried.
- * @size: the size of the range being queried.
- * @client: the user of the logging information; %DIRTY_MEMORY_MIGRATION or
- *          %DIRTY_MEMORY_VGA.
- */
-bool memory_region_test_and_clear_dirty(MemoryRegion *mr, hwaddr addr,
-                                        hwaddr size, unsigned client);
-/**
- * memory_region_sync_dirty_bitmap: Synchronize a region's dirty bitmap with
- *                                  any external TLBs (e.g. kvm)
- *
- * Flushes dirty information from accelerators such as kvm and vhost-net
- * and makes it available to users of the memory API.
- *
- * @mr: the region being flushed.
- */
-void memory_region_sync_dirty_bitmap(MemoryRegion *mr);
-
-/**
- * memory_region_reset_dirty: Mark a range of pages as clean, for a specified
- *                            client.
- *
- * Marks a range of pages as no longer dirty.
- *
- * @mr: the region being updated.
- * @addr: the start of the subrange being cleaned.
- * @size: the size of the subrange being cleaned.
- * @client: the user of the logging information; %DIRTY_MEMORY_MIGRATION or
- *          %DIRTY_MEMORY_VGA.
- */
-void memory_region_reset_dirty(MemoryRegion *mr, hwaddr addr,
-                               hwaddr size, unsigned client);
-
-/**
- * memory_region_set_readonly: Turn a memory region read-only (or read-write)
- *
- * Allows a memory region to be marked as read-only (turning it into a ROM).
- * only useful on RAM regions.
- *
- * @mr: the region being updated.
- * @readonly: whether rhe region is to be ROM or RAM.
- */
-void memory_region_set_readonly(MemoryRegion *mr, bool readonly);
-
-/**
- * memory_region_rom_device_set_romd: enable/disable ROMD mode
- *
- * Allows a ROM device (initialized with memory_region_init_rom_device() to
- * set to ROMD mode (default) or MMIO mode.  When it is in ROMD mode, the
- * device is mapped to guest memory and satisfies read access directly.
- * When in MMIO mode, reads are forwarded to the #MemoryRegion.read function.
- * Writes are always handled by the #MemoryRegion.write function.
- *
- * @mr: the memory region to be updated
- * @romd_mode: %true to put the region into ROMD mode
- */
-void memory_region_rom_device_set_romd(MemoryRegion *mr, bool romd_mode);
-
-/**
- * memory_region_set_coalescing: Enable memory coalescing for the region.
- *
- * Enabled writes to a region to be queued for later processing. MMIO ->write
- * callbacks may be delayed until a non-coalesced MMIO is issued.
- * Only useful for IO regions.  Roughly similar to write-combining hardware.
- *
- * @mr: the memory region to be write coalesced
- */
-void memory_region_set_coalescing(MemoryRegion *mr);
-
-/**
- * memory_region_add_coalescing: Enable memory coalescing for a sub-range of
- *                               a region.
- *
- * Like memory_region_set_coalescing(), but works on a sub-range of a region.
- * Multiple calls can be issued coalesced disjoint ranges.
- *
- * @mr: the memory region to be updated.
- * @offset: the start of the range within the region to be coalesced.
- * @size: the size of the subrange to be coalesced.
- */
-void memory_region_add_coalescing(MemoryRegion *mr,
-                                  hwaddr offset,
-                                  uint64_t size);
-
-/**
- * memory_region_clear_coalescing: Disable MMIO coalescing for the region.
- *
- * Disables any coalescing caused by memory_region_set_coalescing() or
- * memory_region_add_coalescing().  Roughly equivalent to uncacheble memory
- * hardware.
- *
- * @mr: the memory region to be updated.
- */
-void memory_region_clear_coalescing(MemoryRegion *mr);
-
-/**
- * memory_region_set_flush_coalesced: Enforce memory coalescing flush before
- *                                    accesses.
- *
- * Ensure that pending coalesced MMIO request are flushed before the memory
- * region is accessed. This property is automatically enabled for all regions
- * passed to memory_region_set_coalescing() and memory_region_add_coalescing().
- *
- * @mr: the memory region to be updated.
- */
-void memory_region_set_flush_coalesced(MemoryRegion *mr);
-
-/**
- * memory_region_clear_flush_coalesced: Disable memory coalescing flush before
- *                                      accesses.
- *
- * Clear the automatic coalesced MMIO flushing enabled via
- * memory_region_set_flush_coalesced. Note that this service has no effect on
- * memory regions that have MMIO coalescing enabled for themselves. For them,
- * automatic flushing will stop once coalescing is disabled.
- *
- * @mr: the memory region to be updated.
- */
-void memory_region_clear_flush_coalesced(MemoryRegion *mr);
-
-/**
- * memory_region_set_global_locking: Declares the access processing requires
- *                                   QEMU's global lock.
- *
- * When this is invoked, accesses to the memory region will be processed while
- * holding the global lock of QEMU. This is the default behavior of memory
- * regions.
- *
- * @mr: the memory region to be updated.
- */
-void memory_region_set_global_locking(MemoryRegion *mr);
-
-/**
- * memory_region_clear_global_locking: Declares that access processing does
- *                                     not depend on the QEMU global lock.
- *
- * By clearing this property, accesses to the memory region will be processed
- * outside of QEMU's global lock (unless the lock is held on when issuing the
- * access request). In this case, the device model implementing the access
- * handlers is responsible for synchronization of concurrency.
- *
- * @mr: the memory region to be updated.
- */
-void memory_region_clear_global_locking(MemoryRegion *mr);
-
-/**
- * memory_region_add_eventfd: Request an eventfd to be triggered when a word
- *                            is written to a location.
- *
- * Marks a word in an IO region (initialized with memory_region_init_io())
- * as a trigger for an eventfd event.  The I/O callback will not be called.
- * The caller must be prepared to handle failure (that is, take the required
- * action if the callback _is_ called).
- *
- * @mr: the memory region being updated.
- * @addr: the address within @mr that is to be monitored
- * @size: the size of the access to trigger the eventfd
- * @match_data: whether to match against @data, instead of just @addr
- * @data: the data to match against the guest write
- * @fd: the eventfd to be triggered when @addr, @size, and @data all match.
- **/
-void memory_region_add_eventfd(MemoryRegion *mr,
-                               hwaddr addr,
-                               unsigned size,
-                               bool match_data,
-                               uint64_t data,
-                               EventNotifier *e);
-
-/**
- * memory_region_del_eventfd: Cancel an eventfd.
- *
- * Cancels an eventfd trigger requested by a previous
- * memory_region_add_eventfd() call.
- *
- * @mr: the memory region being updated.
- * @addr: the address within @mr that is to be monitored
- * @size: the size of the access to trigger the eventfd
- * @match_data: whether to match against @data, instead of just @addr
- * @data: the data to match against the guest write
- * @fd: the eventfd to be triggered when @addr, @size, and @data all match.
- */
-void memory_region_del_eventfd(MemoryRegion *mr,
-                               hwaddr addr,
-                               unsigned size,
-                               bool match_data,
-                               uint64_t data,
-                               EventNotifier *e);
-
-/**
- * memory_region_add_subregion: Add a subregion to a container.
- *
- * Adds a subregion at @offset.  The subregion may not overlap with other
- * subregions (except for those explicitly marked as overlapping).  A region
- * may only be added once as a subregion (unless removed with
- * memory_region_del_subregion()); use memory_region_init_alias() if you
- * want a region to be a subregion in multiple locations.
- *
- * @mr: the region to contain the new subregion; must be a container
- *      initialized with memory_region_init().
- * @offset: the offset relative to @mr where @subregion is added.
- * @subregion: the subregion to be added.
- */
-void memory_region_add_subregion(MemoryRegion *mr,
-                                 hwaddr offset,
-                                 MemoryRegion *subregion);
-/**
- * memory_region_add_subregion_overlap: Add a subregion to a container
- *                                      with overlap.
- *
- * Adds a subregion at @offset.  The subregion may overlap with other
- * subregions.  Conflicts are resolved by having a higher @priority hide a
- * lower @priority. Subregions without priority are taken as @priority 0.
- * A region may only be added once as a subregion (unless removed with
- * memory_region_del_subregion()); use memory_region_init_alias() if you
- * want a region to be a subregion in multiple locations.
- *
- * @mr: the region to contain the new subregion; must be a container
- *      initialized with memory_region_init().
- * @offset: the offset relative to @mr where @subregion is added.
- * @subregion: the subregion to be added.
- * @priority: used for resolving overlaps; highest priority wins.
- */
-void memory_region_add_subregion_overlap(MemoryRegion *mr,
-                                         hwaddr offset,
-                                         MemoryRegion *subregion,
-                                         int priority);
-
-/**
- * memory_region_get_ram_addr: Get the ram address associated with a memory
- *                             region
- */
-ram_addr_t memory_region_get_ram_addr(MemoryRegion *mr);
-
-uint64_t memory_region_get_alignment(const MemoryRegion *mr);
-/**
- * memory_region_del_subregion: Remove a subregion.
- *
- * Removes a subregion from its container.
- *
- * @mr: the container to be updated.
- * @subregion: the region being removed; must be a current subregion of @mr.
- */
-void memory_region_del_subregion(MemoryRegion *mr,
-                                 MemoryRegion *subregion);
-
-/*
- * memory_region_set_enabled: dynamically enable or disable a region
- *
- * Enables or disables a memory region.  A disabled memory region
- * ignores all accesses to itself and its subregions.  It does not
- * obscure sibling subregions with lower priority - it simply behaves as
- * if it was removed from the hierarchy.
- *
- * Regions default to being enabled.
- *
- * @mr: the region to be updated
- * @enabled: whether to enable or disable the region
- */
-void memory_region_set_enabled(MemoryRegion *mr, bool enabled);
-
-/*
- * memory_region_set_address: dynamically update the address of a region
- *
- * Dynamically updates the address of a region, relative to its container.
- * May be used on regions are currently part of a memory hierarchy.
- *
- * @mr: the region to be updated
- * @addr: new address, relative to container region
- */
-void memory_region_set_address(MemoryRegion *mr, hwaddr addr);
-
-/*
- * memory_region_set_size: dynamically update the size of a region.
- *
- * Dynamically updates the size of a region.
- *
- * @mr: the region to be updated
- * @size: used size of the region.
- */
-void memory_region_set_size(MemoryRegion *mr, uint64_t size);
-
-/*
- * memory_region_set_alias_offset: dynamically update a memory alias's offset
- *
- * Dynamically updates the offset into the target region that an alias points
- * to, as if the fourth argument to memory_region_init_alias() has changed.
- *
- * @mr: the #MemoryRegion to be updated; should be an alias.
- * @offset: the new offset into the target memory region
- */
-void memory_region_set_alias_offset(MemoryRegion *mr,
-                                    hwaddr offset);
-
-/**
- * memory_region_present: checks if an address relative to a @container
- * translates into #MemoryRegion within @container
- *
- * Answer whether a #MemoryRegion within @container covers the address
- * @addr.
- *
- * @container: a #MemoryRegion within which @addr is a relative address
- * @addr: the area within @container to be searched
- */
-bool memory_region_present(MemoryRegion *container, hwaddr addr);
-
-/**
- * memory_region_is_mapped: returns true if #MemoryRegion is mapped
- * into any address space.
- *
- * @mr: a #MemoryRegion which should be checked if it's mapped
- */
-bool memory_region_is_mapped(MemoryRegion *mr);
-
-/**
- * memory_region_find: translate an address/size relative to a
- * MemoryRegion into a #MemoryRegionSection.
- *
- * Locates the first #MemoryRegion within @mr that overlaps the range
- * given by @addr and @size.
- *
- * Returns a #MemoryRegionSection that describes a contiguous overlap.
- * It will have the following characteristics:
- *    .@size = 0 iff no overlap was found
- *    .@mr is non-%NULL iff an overlap was found
- *
- * Remember that in the return value the @offset_within_region is
- * relative to the returned region (in the .@mr field), not to the
- * @mr argument.
- *
- * Similarly, the .@offset_within_address_space is relative to the
- * address space that contains both regions, the passed and the
- * returned one.  However, in the special case where the @mr argument
- * has no container (and thus is the root of the address space), the
- * following will hold:
- *    .@offset_within_address_space >= @addr
- *    .@offset_within_address_space + .@size <= @addr + @size
- *
- * @mr: a MemoryRegion within which @addr is a relative address
- * @addr: start of the area within @as to be searched
- * @size: size of the area to be searched
- */
-MemoryRegionSection memory_region_find(MemoryRegion *mr,
-                                       hwaddr addr, uint64_t size);
-
-/**
- * address_space_sync_dirty_bitmap: synchronize the dirty log for all memory
- *
- * Synchronizes the dirty page log for an entire address space.
- * @as: the address space that contains the memory being synchronized
- */
-void address_space_sync_dirty_bitmap(AddressSpace *as);
-
-/**
- * memory_region_transaction_begin: Start a transaction.
- *
- * During a transaction, changes will be accumulated and made visible
- * only when the transaction ends (is committed).
- */
-void memory_region_transaction_begin(void);
-
-/**
- * memory_region_transaction_commit: Commit a transaction and make changes
- *                                   visible to the guest.
- */
-void memory_region_transaction_commit(void);
-
-/**
- * memory_listener_register: register callbacks to be called when memory
- *                           sections are mapped or unmapped into an address
- *                           space
- *
- * @listener: an object containing the callbacks to be called
- * @filter: if non-%NULL, only regions in this address space will be observed
- */
-void memory_listener_register(MemoryListener *listener, AddressSpace *filter);
-
-/**
- * memory_listener_unregister: undo the effect of memory_listener_register()
- *
- * @listener: an object containing the callbacks to be removed
- */
-void memory_listener_unregister(MemoryListener *listener);
-
-/**
- * memory_global_dirty_log_start: begin dirty logging for all regions
- */
-void memory_global_dirty_log_start(void);
-
-/**
- * memory_global_dirty_log_stop: end dirty logging for all regions
- */
-void memory_global_dirty_log_stop(void);
-
-void mtree_info(fprintf_function mon_printf, void *f);
-
-/**
- * memory_region_dispatch_read: perform a read directly to the specified
- * MemoryRegion.
- *
- * @mr: #MemoryRegion to access
- * @addr: address within that region
- * @pval: pointer to uint64_t which the data is written to
- * @size: size of the access in bytes
- * @attrs: memory transaction attributes to use for the access
- */
-MemTxResult memory_region_dispatch_read(MemoryRegion *mr,
-                                        hwaddr addr,
-                                        uint64_t *pval,
-                                        unsigned size,
-                                        MemTxAttrs attrs);
-/**
- * memory_region_dispatch_write: perform a write directly to the specified
- * MemoryRegion.
- *
- * @mr: #MemoryRegion to access
- * @addr: address within that region
- * @data: data to write
- * @size: size of the access in bytes
- * @attrs: memory transaction attributes to use for the access
- */
-MemTxResult memory_region_dispatch_write(MemoryRegion *mr,
-                                         hwaddr addr,
-                                         uint64_t data,
-                                         unsigned size,
-                                         MemTxAttrs attrs);
-
-/**
- * address_space_init: initializes an address space
- *
- * @as: an uninitialized #AddressSpace
- * @root: a #MemoryRegion that routes addresses for the address space
- * @name: an address space name.  The name is only used for debugging
- *        output.
- */
-void address_space_init(AddressSpace *as, MemoryRegion *root, const char *name);
-
-/**
- * address_space_init_shareable: return an address space for a memory region,
- *                               creating it if it does not already exist
- *
- * @root: a #MemoryRegion that routes addresses for the address space
- * @name: an address space name.  The name is only used for debugging
- *        output.
- *
- * This function will return a pointer to an existing AddressSpace
- * which was initialized with the specified MemoryRegion, or it will
- * create and initialize one if it does not already exist. The ASes
- * are reference-counted, so the memory will be freed automatically
- * when the AddressSpace is destroyed via address_space_destroy.
- */
-AddressSpace *address_space_init_shareable(MemoryRegion *root,
-                                           const char *name);
-
-/**
- * address_space_destroy: destroy an address space
- *
- * Releases all resources associated with an address space.  After an address space
- * is destroyed, its root memory region (given by address_space_init()) may be destroyed
- * as well.
- *
- * @as: address space to be destroyed
- */
-void address_space_destroy(AddressSpace *as);
-
-/**
- * address_space_rw: read from or write to an address space.
- *
- * Return a MemTxResult indicating whether the operation succeeded
- * or failed (eg unassigned memory, device rejected the transaction,
- * IOMMU fault).
- *
- * @as: #AddressSpace to be accessed
- * @addr: address within that address space
- * @attrs: memory transaction attributes
- * @buf: buffer with the data transferred
- * @is_write: indicates the transfer direction
- */
-MemTxResult address_space_rw(AddressSpace *as, hwaddr addr,
-                             MemTxAttrs attrs, uint8_t *buf,
-                             int len, bool is_write);
-
-/**
- * address_space_write: write to address space.
- *
- * Return a MemTxResult indicating whether the operation succeeded
- * or failed (eg unassigned memory, device rejected the transaction,
- * IOMMU fault).
- *
- * @as: #AddressSpace to be accessed
- * @addr: address within that address space
- * @attrs: memory transaction attributes
- * @buf: buffer with the data transferred
- */
-MemTxResult address_space_write(AddressSpace *as, hwaddr addr,
-                                MemTxAttrs attrs,
-                                const uint8_t *buf, int len);
-
-/* address_space_ld*: load from an address space
- * address_space_st*: store to an address space
- *
- * These functions perform a load or store of the byte, word,
- * longword or quad to the specified address within the AddressSpace.
- * The _le suffixed functions treat the data as little endian;
- * _be indicates big endian; no suffix indicates "same endianness
- * as guest CPU".
- *
- * The "guest CPU endianness" accessors are deprecated for use outside
- * target-* code; devices should be CPU-agnostic and use either the LE
- * or the BE accessors.
- *
- * @as #AddressSpace to be accessed
- * @addr: address within that address space
- * @val: data value, for stores
- * @attrs: memory transaction attributes
- * @result: location to write the success/failure of the transaction;
- *   if NULL, this information is discarded
- */
-uint32_t address_space_ldub(AddressSpace *as, hwaddr addr,
-                            MemTxAttrs attrs, MemTxResult *result);
-uint32_t address_space_lduw_le(AddressSpace *as, hwaddr addr,
-                            MemTxAttrs attrs, MemTxResult *result);
-uint32_t address_space_lduw_be(AddressSpace *as, hwaddr addr,
-                            MemTxAttrs attrs, MemTxResult *result);
-uint32_t address_space_ldl_le(AddressSpace *as, hwaddr addr,
-                            MemTxAttrs attrs, MemTxResult *result);
-uint32_t address_space_ldl_be(AddressSpace *as, hwaddr addr,
-                            MemTxAttrs attrs, MemTxResult *result);
-uint64_t address_space_ldq_le(AddressSpace *as, hwaddr addr,
-                            MemTxAttrs attrs, MemTxResult *result);
-uint64_t address_space_ldq_be(AddressSpace *as, hwaddr addr,
-                            MemTxAttrs attrs, MemTxResult *result);
-void address_space_stb(AddressSpace *as, hwaddr addr, uint32_t val,
-                            MemTxAttrs attrs, MemTxResult *result);
-void address_space_stw_le(AddressSpace *as, hwaddr addr, uint32_t val,
-                            MemTxAttrs attrs, MemTxResult *result);
-void address_space_stw_be(AddressSpace *as, hwaddr addr, uint32_t val,
-                            MemTxAttrs attrs, MemTxResult *result);
-void address_space_stl_le(AddressSpace *as, hwaddr addr, uint32_t val,
-                            MemTxAttrs attrs, MemTxResult *result);
-void address_space_stl_be(AddressSpace *as, hwaddr addr, uint32_t val,
-                            MemTxAttrs attrs, MemTxResult *result);
-void address_space_stq_le(AddressSpace *as, hwaddr addr, uint64_t val,
-                            MemTxAttrs attrs, MemTxResult *result);
-void address_space_stq_be(AddressSpace *as, hwaddr addr, uint64_t val,
-                            MemTxAttrs attrs, MemTxResult *result);
-
-#ifdef NEED_CPU_H
-uint32_t address_space_lduw(AddressSpace *as, hwaddr addr,
-                            MemTxAttrs attrs, MemTxResult *result);
-uint32_t address_space_ldl(AddressSpace *as, hwaddr addr,
-                            MemTxAttrs attrs, MemTxResult *result);
-uint64_t address_space_ldq(AddressSpace *as, hwaddr addr,
-                            MemTxAttrs attrs, MemTxResult *result);
-void address_space_stl_notdirty(AddressSpace *as, hwaddr addr, uint32_t val,
-                            MemTxAttrs attrs, MemTxResult *result);
-void address_space_stw(AddressSpace *as, hwaddr addr, uint32_t val,
-                            MemTxAttrs attrs, MemTxResult *result);
-void address_space_stl(AddressSpace *as, hwaddr addr, uint32_t val,
-                            MemTxAttrs attrs, MemTxResult *result);
-void address_space_stq(AddressSpace *as, hwaddr addr, uint64_t val,
-                            MemTxAttrs attrs, MemTxResult *result);
-#endif
-
-/* address_space_translate: translate an address range into an address space
- * into a MemoryRegion and an address range into that section.  Should be
- * called from an RCU critical section, to avoid that the last reference
- * to the returned region disappears after address_space_translate returns.
- *
- * @as: #AddressSpace to be accessed
- * @addr: address within that address space
- * @xlat: pointer to address within the returned memory region section's
- * #MemoryRegion.
- * @len: pointer to length
- * @is_write: indicates the transfer direction
- */
-MemoryRegion *address_space_translate(AddressSpace *as, hwaddr addr,
-                                      hwaddr *xlat, hwaddr *len,
-                                      bool is_write);
-
-/* address_space_access_valid: check for validity of accessing an address
- * space range
- *
- * Check whether memory is assigned to the given address space range, and
- * access is permitted by any IOMMU regions that are active for the address
- * space.
- *
- * For now, addr and len should be aligned to a page size.  This limitation
- * will be lifted in the future.
- *
- * @as: #AddressSpace to be accessed
- * @addr: address within that address space
- * @len: length of the area to be checked
- * @is_write: indicates the transfer direction
- */
-bool address_space_access_valid(AddressSpace *as, hwaddr addr, int len, bool is_write);
-
-/* address_space_map: map a physical memory region into a host virtual address
- *
- * May map a subset of the requested range, given by and returned in @plen.
- * May return %NULL if resources needed to perform the mapping are exhausted.
- * Use only for reads OR writes - not for read-modify-write operations.
- * Use cpu_register_map_client() to know when retrying the map operation is
- * likely to succeed.
- *
- * @as: #AddressSpace to be accessed
- * @addr: address within that address space
- * @plen: pointer to length of buffer; updated on return
- * @is_write: indicates the transfer direction
- */
-void *address_space_map(AddressSpace *as, hwaddr addr,
-                        hwaddr *plen, bool is_write);
-
-/* address_space_unmap: Unmaps a memory region previously mapped by address_space_map()
- *
- * Will also mark the memory as dirty if @is_write == %true.  @access_len gives
- * the amount of memory that was actually read or written by the caller.
- *
- * @as: #AddressSpace used
- * @addr: address within that address space
- * @len: buffer length as returned by address_space_map()
- * @access_len: amount of data actually transferred
- * @is_write: indicates the transfer direction
- */
-void address_space_unmap(AddressSpace *as, void *buffer, hwaddr len,
-                         int is_write, hwaddr access_len);
-
-
-/* Internal functions, part of the implementation of address_space_read.  */
-MemTxResult address_space_read_continue(AddressSpace *as, hwaddr addr,
-                                        MemTxAttrs attrs, uint8_t *buf,
-                                        int len, hwaddr addr1, hwaddr l,
-					MemoryRegion *mr);
-MemTxResult address_space_read_full(AddressSpace *as, hwaddr addr,
-                                    MemTxAttrs attrs, uint8_t *buf, int len);
-void *qemu_get_ram_ptr(RAMBlock *ram_block, ram_addr_t addr);
-
-static inline bool memory_access_is_direct(MemoryRegion *mr, bool is_write)
-{
-    if (is_write) {
-        return memory_region_is_ram(mr) && !mr->readonly;
-    } else {
-        return memory_region_is_ram(mr) || memory_region_is_romd(mr);
-    }
-}
-
-/**
- * address_space_read: read from an address space.
- *
- * Return a MemTxResult indicating whether the operation succeeded
- * or failed (eg unassigned memory, device rejected the transaction,
- * IOMMU fault).
- *
- * @as: #AddressSpace to be accessed
- * @addr: address within that address space
- * @attrs: memory transaction attributes
- * @buf: buffer with the data transferred
- */
-static inline __attribute__((__always_inline__))
-MemTxResult address_space_read(AddressSpace *as, hwaddr addr, MemTxAttrs attrs,
-                               uint8_t *buf, int len)
-{
-    MemTxResult result = MEMTX_OK;
-    hwaddr l, addr1;
-    void *ptr;
-    MemoryRegion *mr;
-
-    if (__builtin_constant_p(len)) {
-        if (len) {
-            rcu_read_lock();
-            l = len;
-            mr = address_space_translate(as, addr, &addr1, &l, false);
-            if (len == l && memory_access_is_direct(mr, false)) {
-                addr1 += memory_region_get_ram_addr(mr);
-                ptr = qemu_get_ram_ptr(mr->ram_block, addr1);
-                memcpy(buf, ptr, len);
-            } else {
-                result = address_space_read_continue(as, addr, attrs, buf, len,
-                                                     addr1, l, mr);
-            }
-            rcu_read_unlock();
-        }
-    } else {
-        result = address_space_read_full(as, addr, attrs, buf, len);
-    }
-    return result;
-}
-
-#endif
-
-#endif