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wangyanan55@huawei.com, zhao1.liu@intel.com, joao.m.martins@oracle.com
Subject: [PATCH v7 4/6] numa: Introduce and use ram_block_notify_remap()
Date: Sat, 1 Feb 2025 09:57:24 +0000
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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 --git a/hw/core/numa.c b/hw/core/numa.c
index 218576f745..003bcd8a66 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_si=
ze, 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 off=
set,
+ size_t size);
QLIST_ENTRY(RAMBlockNotifier) next;
};
=20
@@ -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);
=20
GString *ram_block_format(void);
=20
diff --git a/system/physmem.c b/system/physmem.c
index 686f569270..561b2c38c0 100644
--- a/system/physmem.c
+++ b/system/physmem.c
@@ -2259,6 +2259,7 @@ void qemu_ram_remap(ram_addr_t addr)
}
memory_try_enable_merging(vaddr, page_size);
qemu_ram_setup_dump(vaddr, page_size);
+ ram_block_notify_remap(block->host, offset, page_size);
}
=20
break;
--=20
2.43.5