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[1/2] qemu-kvm: Introduce wrapper functions to access phys_ram_dirty.

Message ID 1268805108-27433-2-git-send-email-tamura.yoshiaki@lab.ntt.co.jp
State New
Headers show

Commit Message

Yoshiaki Tamura March 17, 2010, 5:51 a.m. UTC 
Adds wrapper functions to prevent direct access to the phys_ram_dirty bitmap.

Signed-off-by: Yoshiaki Tamura <tamura.yoshiaki@lab.ntt.co.jp>
Signed-off-by: OHMURA Kei <ohmura.kei@lab.ntt.co.jp>
---
 cpu-all.h |   25 +++++++++++++++++++++++++
 1 files changed, 25 insertions(+), 0 deletions(-)
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Patch

diff --git a/cpu-all.h b/cpu-all.h
index 9bc01b9..c279c0a 100644
--- a/cpu-all.h
+++ b/cpu-all.h
@@ -882,6 +882,11 @@  static inline int cpu_physical_memory_is_dirty(ram_addr_t addr)
     return phys_ram_dirty[addr >> TARGET_PAGE_BITS] == 0xff;
 }
 
+static inline int cpu_physical_memory_get_dirty_flags(ram_addr_t addr)
+{
+    return phys_ram_dirty[addr >> TARGET_PAGE_BITS];
+}
+
 static inline int cpu_physical_memory_get_dirty(ram_addr_t addr,
                                                 int dirty_flags)
 {
@@ -893,6 +898,26 @@  static inline void cpu_physical_memory_set_dirty(ram_addr_t addr)
     phys_ram_dirty[addr >> TARGET_PAGE_BITS] = 0xff;
 }
 
+static inline int cpu_physical_memory_set_dirty_flags(ram_addr_t addr,
+                                                      int dirty_flags)
+{
+    return phys_ram_dirty[addr >> TARGET_PAGE_BITS] |= dirty_flags;
+}
+
+static inline void cpu_physical_memory_mask_dirty_range(ram_addr_t start,
+                                                        int length,
+                                                        int dirty_flags)
+{
+    int i, mask, len;
+    uint8_t *p;
+
+    len = length >> TARGET_PAGE_BITS;
+    mask = ~dirty_flags;
+    p = phys_ram_dirty + (start >> TARGET_PAGE_BITS);
+    for (i = 0; i < len; i++)
+        p[i] &= mask;
+}
+
 void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t end,
                                      int dirty_flags);
 void cpu_tlb_update_dirty(CPUState *env);