[Xen-devel] [PATCHv5 4/6] exec: Introduce helper to set dirty flags.

[Alex Bligh <alex@xxxxxxxxxxx>]

This new helper/hook is used in the next patch to add an extra call in a single
place.

Backport of 51d7a9eb2b64e787c90bea1027308087eac22065

Signed-off-by: Alex Bligh <alex@xxxxxxxxxxx>
---
 exec.c |   52 +++++++++++++++++-----------------------------------
 1 files changed, 17 insertions(+), 35 deletions(-)

diff --git a/exec.c b/exec.c
index 2a35944..07a6f68 100644
--- a/exec.c
+++ b/exec.c
@@ -3951,6 +3951,18 @@ int cpu_memory_rw_debug(CPUState *env, target_ulong addr,
 }
 
 #else
+
+static void invalidate_and_set_dirty(target_phys_addr_t addr,
+                                     target_phys_addr_t length)
+{
+    if (!cpu_physical_memory_is_dirty(addr)) {
+        /* invalidate code */
+        tb_invalidate_phys_page_range(addr, addr + length, 0);
+        /* set dirty bit */
+        cpu_physical_memory_set_dirty_flags(addr, (0xff & ~CODE_DIRTY_FLAG));
+    }
+}
+
 void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf,
                             int len, int is_write)
 {
@@ -4003,13 +4015,7 @@ void cpu_physical_memory_rw(target_phys_addr_t addr, 
uint8_t *buf,
                 /* RAM case */
                 ptr = qemu_get_ram_ptr(addr1);
                 memcpy(ptr, buf, l);
-                if (!cpu_physical_memory_is_dirty(addr1)) {
-                    /* invalidate code */
-                    tb_invalidate_phys_page_range(addr1, addr1 + l, 0);
-                    /* set dirty bit */
-                    cpu_physical_memory_set_dirty_flags(
-                        addr1, (0xff & ~CODE_DIRTY_FLAG));
-                }
+                invalidate_and_set_dirty(addr1, l);
                 qemu_put_ram_ptr(ptr);
             }
         } else {
@@ -4081,13 +4087,7 @@ void cpu_physical_memory_write_rom(target_phys_addr_t 
addr,
             /* ROM/RAM case */
             ptr = qemu_get_ram_ptr(addr1);
             memcpy(ptr, buf, l);
-            if (!cpu_physical_memory_is_dirty(addr1)) {
-                /* invalidate code */
-                tb_invalidate_phys_page_range(addr1, addr1 + l, 0);
-                /* set dirty bit */
-                cpu_physical_memory_set_dirty_flags(
-                    addr1, (0xff & ~CODE_DIRTY_FLAG));
-            }
+            invalidate_and_set_dirty(addr1, l);
             qemu_put_ram_ptr(ptr);
         }
         len -= l;
@@ -4218,13 +4218,7 @@ void cpu_physical_memory_unmap(void *buffer, 
target_phys_addr_t len,
                 l = TARGET_PAGE_SIZE;
                 if (l > access_len)
                     l = access_len;
-                if (!cpu_physical_memory_is_dirty(addr1)) {
-                    /* invalidate code */
-                    tb_invalidate_phys_page_range(addr1, addr1 + l, 0);
-                    /* set dirty bit */
-                    cpu_physical_memory_set_dirty_flags(
-                        addr1, (0xff & ~CODE_DIRTY_FLAG));
-                }
+                invalidate_and_set_dirty(addr1, l);
                 addr1 += l;
                 access_len -= l;
             }
@@ -4568,13 +4562,7 @@ static inline void stl_phys_internal(target_phys_addr_t 
addr, uint32_t val,
             stl_p(ptr, val);
             break;
         }
-        if (!cpu_physical_memory_is_dirty(addr1)) {
-            /* invalidate code */
-            tb_invalidate_phys_page_range(addr1, addr1 + 4, 0);
-            /* set dirty bit */
-            cpu_physical_memory_set_dirty_flags(addr1,
-                (0xff & ~CODE_DIRTY_FLAG));
-        }
+        invalidate_and_set_dirty(addr1, 4);
     }
 }
 
@@ -4646,13 +4634,7 @@ static inline void stw_phys_internal(target_phys_addr_t 
addr, uint32_t val,
             stw_p(ptr, val);
             break;
         }
-        if (!cpu_physical_memory_is_dirty(addr1)) {
-            /* invalidate code */
-            tb_invalidate_phys_page_range(addr1, addr1 + 2, 0);
-            /* set dirty bit */
-            cpu_physical_memory_set_dirty_flags(addr1,
-                (0xff & ~CODE_DIRTY_FLAG));
-        }
+        invalidate_and_set_dirty(addr1, 2);
     }
 }
 
-- 
1.7.4.1


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