This API will be used in the following patch.
Signed-off-by: Wen Congyang <we...@cn.fujitsu.com>
---
cpu-common.h | 4 ++++
exec.c | 11 +++++++++++
2 files changed, 15 insertions(+), 0 deletions(-)
diff --git a/cpu-common.h b/cpu-common.h
index dca5175..1fe3280 100644
--- a/cpu-common.h
+++ b/cpu-common.h
@@ -71,6 +71,10 @@ void cpu_physical_memory_unmap(void *buffer,
target_phys_addr_t len,
void *cpu_register_map_client(void *opaque, void (*callback)(void *opaque));
void cpu_unregister_map_client(void *cookie);
+#ifndef CONFIG_USER_ONLY
+bool cpu_physical_memory_is_io(target_phys_addr_t phys_addr);
+#endif
+
/* Coalesced MMIO regions are areas where write operations can be reordered.
* This usually implies that write operations are side-effect free. This
allows
* batching which can make a major impact on performance when using
diff --git a/exec.c b/exec.c
index 77d6866..eb6491b 100644
--- a/exec.c
+++ b/exec.c
@@ -4662,3 +4662,14 @@ bool virtio_is_big_endian(void)
#undef env
#endif
+
+#ifndef CONFIG_USER_ONLY
+bool cpu_physical_memory_is_io(target_phys_addr_t phys_addr)
+{
+ MemoryRegionSection *section;
+
+ section = phys_page_find(phys_addr >> TARGET_PAGE_BITS);
+
+ return !is_ram_rom_romd(section);
+}
+#endif
--
1.7.1
