diff mbox series

[v2,4/7] numa: Introduce and use ram_block_notify_remap()

Message ID 20241107102126.2183152-5-william.roche@oracle.com (mailing list archive)
State New
Headers show
Series [v2,1/7] accel/kvm: Keep track of the HWPoisonPage page_size | expand

Commit Message

William Roche Nov. 7, 2024, 10:21 a.m. UTC 
From: David Hildenbrand <david@redhat.com>

Notify registered listeners about the remap at the end of
qemu_ram_remap() so e.g., a memory backend can re-apply its
settings correctly.

Signed-off-by: David Hildenbrand <david@redhat.com>
Signed-off-by: William Roche <william.roche@oracle.com>
---
 hw/core/numa.c         | 11 +++++++++++
 include/exec/ramlist.h |  3 +++
 system/physmem.c       |  1 +
 3 files changed, 15 insertions(+)
diff mbox series

Patch

diff --git a/hw/core/numa.c b/hw/core/numa.c
index 1b5f44baea..4ca67db483 100644
--- a/hw/core/numa.c
+++ b/hw/core/numa.c
@@ -895,3 +895,14 @@  void ram_block_notify_resize(void *host, size_t old_size, size_t new_size)
         }
     }
 }
+
+void ram_block_notify_remap(void *host, size_t offset, size_t size)
+{
+    RAMBlockNotifier *notifier;
+
+    QLIST_FOREACH(notifier, &ram_list.ramblock_notifiers, next) {
+        if (notifier->ram_block_remapped) {
+            notifier->ram_block_remapped(notifier, host, offset, size);
+        }
+    }
+}
diff --git a/include/exec/ramlist.h b/include/exec/ramlist.h
index d9cfe530be..c1dc785a57 100644
--- a/include/exec/ramlist.h
+++ b/include/exec/ramlist.h
@@ -72,6 +72,8 @@  struct RAMBlockNotifier {
                               size_t max_size);
     void (*ram_block_resized)(RAMBlockNotifier *n, void *host, size_t old_size,
                               size_t new_size);
+    void (*ram_block_remapped)(RAMBlockNotifier *n, void *host, size_t offset,
+                               size_t size);
     QLIST_ENTRY(RAMBlockNotifier) next;
 };
 
@@ -80,6 +82,7 @@  void ram_block_notifier_remove(RAMBlockNotifier *n);
 void ram_block_notify_add(void *host, size_t size, size_t max_size);
 void ram_block_notify_remove(void *host, size_t size, size_t max_size);
 void ram_block_notify_resize(void *host, size_t old_size, size_t new_size);
+void ram_block_notify_remap(void *host, size_t offset, size_t size);
 
 GString *ram_block_format(void);
 
diff --git a/system/physmem.c b/system/physmem.c
index dfea120cc5..e72ca31451 100644
--- a/system/physmem.c
+++ b/system/physmem.c
@@ -2228,6 +2228,7 @@  void qemu_ram_remap(ram_addr_t addr, ram_addr_t length)
                     memory_try_enable_merging(vaddr, length);
                     qemu_ram_setup_dump(vaddr, length);
                 }
+                ram_block_notify_remap(block->host, offset, length);
             }
         }
     }