Patchwork [RFC,v3,26/56] Integrate I/O memory regions into qemu

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Submitter Avi Kivity
Date July 10, 2011, 6:14 p.m.
Message ID <1310321709-30770-27-git-send-email-avi@redhat.com>
Download mbox | patch
Permalink /patch/104092/
State New
Headers show

Comments

Avi Kivity - July 10, 2011, 6:14 p.m.
get_system_io() returns the root I/O memory region.

Signed-off-by: Avi Kivity <avi@redhat.com>
---
 exec-memory.h |    2 ++
 exec.c        |   10 ++++++++++
 2 files changed, 12 insertions(+), 0 deletions(-)

Patch

diff --git a/exec-memory.h b/exec-memory.h
index aad21b5..3acb15f 100644
--- a/exec-memory.h
+++ b/exec-memory.h
@@ -15,6 +15,8 @@ 
  */
 MemoryRegion *get_system_memory(void);
 
+MemoryRegion *get_system_io(void);
+
 /* Set the root memory region.  This region is the system memory map. */
 void set_system_memory_map(MemoryRegion *mr);
 
diff --git a/exec.c b/exec.c
index f274ec9..e949c91 100644
--- a/exec.c
+++ b/exec.c
@@ -113,6 +113,7 @@  static int in_migration;
 RAMList ram_list = { .blocks = QLIST_HEAD_INITIALIZER(ram_list) };
 
 static MemoryRegion *system_memory;
+static MemoryRegion *system_io;
 
 #endif
 
@@ -3817,6 +3818,10 @@  static void memory_map_init(void)
     system_memory = qemu_malloc(sizeof(*system_memory));
     memory_region_init(system_memory, "system", UINT64_MAX);
     set_system_memory_map(system_memory);
+
+    system_io = qemu_malloc(sizeof(*system_io));
+    memory_region_init(system_memory, "io", 65536);
+    set_system_io_map(system_io);
 }
 
 MemoryRegion *get_system_memory(void)
@@ -3824,6 +3829,11 @@  MemoryRegion *get_system_memory(void)
     return system_memory;
 }
 
+MemoryRegion *get_system_io(void)
+{
+    return system_io;
+}
+
 #endif /* !defined(CONFIG_USER_ONLY) */
 
 /* physical memory access (slow version, mainly for debug) */