[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH 02/11 v10] Add API to check whether a physical addre
From: |
Wen Congyang |
Subject: |
[Qemu-devel] [PATCH 02/11 v10] Add API to check whether a physical address is I/O address |
Date: |
Tue, 20 Mar 2012 11:44:21 +0800 |
User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100413 Fedora/3.0.4-2.fc13 Thunderbird/3.0.4 |
This API will be used in the following patch.
Signed-off-by: Wen Congyang <address@hidden>
---
cpu-common.h | 2 ++
exec.c | 9 +++++++++
2 files changed, 11 insertions(+), 0 deletions(-)
diff --git a/cpu-common.h b/cpu-common.h
index dca5175..fcd50dc 100644
--- a/cpu-common.h
+++ b/cpu-common.h
@@ -71,6 +71,8 @@ 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);
+bool cpu_physical_memory_is_io(target_phys_addr_t phys_addr);
+
/* 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 265e895..4ce2ba7 100644
--- a/exec.c
+++ b/exec.c
@@ -4656,3 +4656,12 @@ bool virtio_is_big_endian(void)
#undef env
#endif
+
+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);
+}
--
1.7.1
[Prev in Thread] |
Current Thread |
[Next in Thread] |
- [Qemu-devel] [PATCH 02/11 v10] Add API to check whether a physical address is I/O address,
Wen Congyang <=