[Qemu-devel] [PATCH 1/5] cpu: add set_memory flag to request dirty logging

[Michael S. Tsirkin]

Pass the flag to all cpu notifiers, doing
nothing at this point. Will be used by
follow-up patches.

Signed-off-by: Michael S. Tsirkin <address@hidden>
---
 cpu-common.h |   22 +++++++++++++++++-----
 exec.c       |   14 ++++++++------
 hw/vhost.c   |    3 ++-
 kvm-all.c    |    3 ++-
 4 files changed, 29 insertions(+), 13 deletions(-)

diff --git a/cpu-common.h b/cpu-common.h
index ef4e8da..c239cc0 100644
--- a/cpu-common.h
+++ b/cpu-common.h
@@ -34,10 +34,21 @@ typedef unsigned long ram_addr_t;
 typedef void CPUWriteMemoryFunc(void *opaque, target_phys_addr_t addr, 
uint32_t value);
 typedef uint32_t CPUReadMemoryFunc(void *opaque, target_phys_addr_t addr);
 
-void cpu_register_physical_memory_offset(target_phys_addr_t start_addr,
-                                         ram_addr_t size,
-                                         ram_addr_t phys_offset,
-                                         ram_addr_t region_offset);
+void cpu_register_physical_memory_log(target_phys_addr_t start_addr,
+                                      ram_addr_t size,
+                                      ram_addr_t phys_offset,
+                                      ram_addr_t region_offset,
+                                      bool log_dirty);
+
+static inline void cpu_register_physical_memory_offset(target_phys_addr_t 
start_addr,
+                                                       ram_addr_t size,
+                                                       ram_addr_t phys_offset,
+                                                       ram_addr_t 
region_offset)
+{
+    cpu_register_physical_memory_log(start_addr, size, phys_offset,
+                                     region_offset, false);
+}
+
 static inline void cpu_register_physical_memory(target_phys_addr_t start_addr,
                                                 ram_addr_t size,
                                                 ram_addr_t phys_offset)
@@ -91,7 +102,8 @@ struct CPUPhysMemoryClient {
     void (*set_memory)(struct CPUPhysMemoryClient *client,
                        target_phys_addr_t start_addr,
                        ram_addr_t size,
-                       ram_addr_t phys_offset);
+                       ram_addr_t phys_offset,
+                       bool log_dirty);
     int (*sync_dirty_bitmap)(struct CPUPhysMemoryClient *client,
                              target_phys_addr_t start_addr,
                              target_phys_addr_t end_addr);
diff --git a/exec.c b/exec.c
index 964ce31..d1a066c 100644
--- a/exec.c
+++ b/exec.c
@@ -1711,11 +1711,12 @@ static QLIST_HEAD(memory_client_list, 
CPUPhysMemoryClient) memory_client_list
 
 static void cpu_notify_set_memory(target_phys_addr_t start_addr,
                                   ram_addr_t size,
-                                  ram_addr_t phys_offset)
+                                  ram_addr_t phys_offset,
+                                  bool log_dirty)
 {
     CPUPhysMemoryClient *client;
     QLIST_FOREACH(client, &memory_client_list, list) {
-        client->set_memory(client, start_addr, size, phys_offset);
+        client->set_memory(client, start_addr, size, phys_offset, log_dirty);
     }
 }
 
@@ -1755,7 +1756,7 @@ static void phys_page_for_each_1(CPUPhysMemoryClient 
*client,
         for (i = 0; i < L2_SIZE; ++i) {
             if (pd[i].phys_offset != IO_MEM_UNASSIGNED) {
                 client->set_memory(client, pd[i].region_offset,
-                                   TARGET_PAGE_SIZE, pd[i].phys_offset);
+                                   TARGET_PAGE_SIZE, pd[i].phys_offset, false);
             }
         }
     } else {
@@ -2600,10 +2601,11 @@ static subpage_t *subpage_init (target_phys_addr_t 
base, ram_addr_t *phys,
    start_addr and region_offset are rounded down to a page boundary
    before calculating this offset.  This should not be a problem unless
    the low bits of start_addr and region_offset differ.  */
-void cpu_register_physical_memory_offset(target_phys_addr_t start_addr,
+void cpu_register_physical_memory_log(target_phys_addr_t start_addr,
                                          ram_addr_t size,
                                          ram_addr_t phys_offset,
-                                         ram_addr_t region_offset)
+                                         ram_addr_t region_offset,
+                                         bool log_dirty)
 {
     target_phys_addr_t addr, end_addr;
     PhysPageDesc *p;
@@ -2611,7 +2613,7 @@ void 
cpu_register_physical_memory_offset(target_phys_addr_t start_addr,
     ram_addr_t orig_size = size;
     subpage_t *subpage;
 
-    cpu_notify_set_memory(start_addr, size, phys_offset);
+    cpu_notify_set_memory(start_addr, size, phys_offset, log_dirty);
 
     if (phys_offset == IO_MEM_UNASSIGNED) {
         region_offset = start_addr;
diff --git a/hw/vhost.c b/hw/vhost.c
index 14b571d..dc3d0e2 100644
--- a/hw/vhost.c
+++ b/hw/vhost.c
@@ -300,7 +300,8 @@ static int vhost_verify_ring_mappings(struct vhost_dev *dev,
 static void vhost_client_set_memory(CPUPhysMemoryClient *client,
                                     target_phys_addr_t start_addr,
                                     ram_addr_t size,
-                                    ram_addr_t phys_offset)
+                                    ram_addr_t phys_offset,
+                                    bool log_dirty)
 {
     struct vhost_dev *dev = container_of(client, struct vhost_dev, client);
     ram_addr_t flags = phys_offset & ~TARGET_PAGE_MASK;
diff --git a/kvm-all.c b/kvm-all.c
index 1d7e8ea..1647e1a 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -625,7 +625,8 @@ static void kvm_set_phys_mem(target_phys_addr_t start_addr, 
ram_addr_t size,
 
 static void kvm_client_set_memory(struct CPUPhysMemoryClient *client,
                                   target_phys_addr_t start_addr,
-                                  ram_addr_t size, ram_addr_t phys_offset)
+                                  ram_addr_t size, ram_addr_t phys_offset,
+                                  bool log_dirty)
 {
     kvm_set_phys_mem(start_addr, size, phys_offset);
 }
-- 
1.7.3.2.91.g446ac