Merge tag 'block-pull-request' of https://gitlab.com/stefanha/qemu into staging

Pull request

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# gpg: Signature made Wed 26 Oct 2022 14:58:38 EDT
# gpg:                using RSA key 8695A8BFD3F97CDAAC35775A9CA4ABB381AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>" [ultimate]
# gpg:                 aka "Stefan Hajnoczi <stefanha@gmail.com>" [ultimate]
# Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35  775A 9CA4 ABB3 81AB 73C8

* tag 'block-pull-request' of https://gitlab.com/stefanha/qemu:
  virtio-blk: use BDRV_REQ_REGISTERED_BUF optimization hint
  blkio: implement BDRV_REQ_REGISTERED_BUF optimization
  stubs: add qemu_ram_block_from_host() and qemu_ram_get_fd()
  exec/cpu-common: add qemu_ram_get_fd()
  block: add BlockRAMRegistrar
  numa: use QLIST_FOREACH_SAFE() for RAM block notifiers
  block: return errors from bdrv_register_buf()
  block: add BDRV_REQ_REGISTERED_BUF request flag
  block: use BdrvRequestFlags type for supported flag fields
  block: pass size to bdrv_unregister_buf()
  numa: call ->ram_block_removed() in ram_block_notifer_remove()
  blkio: add libblkio block driver
  coroutine: add flag to re-queue at front of CoQueue

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

1 files changed, 23 insertions, 3 deletions

diff --git a/hw/core/numa.c b/hw/core/numa.c
index 26d8e5f616..ea24a5fa8c 100644
--- a/hw/core/numa.c
+++ b/hw/core/numa.c
@@ -822,6 +822,19 @@ static int ram_block_notify_add_single(RAMBlock *rb, void *opaque)
     return 0;
 }
 
+static int ram_block_notify_remove_single(RAMBlock *rb, void *opaque)
+{
+    const ram_addr_t max_size = qemu_ram_get_max_length(rb);
+    const ram_addr_t size = qemu_ram_get_used_length(rb);
+    void *host = qemu_ram_get_host_addr(rb);
+    RAMBlockNotifier *notifier = opaque;
+
+    if (host) {
+        notifier->ram_block_removed(notifier, host, size, max_size);
+    }
+    return 0;
+}
+
 void ram_block_notifier_add(RAMBlockNotifier *n)
 {
     QLIST_INSERT_HEAD(&ram_list.ramblock_notifiers, n, next);
@@ -835,13 +848,18 @@ void ram_block_notifier_add(RAMBlockNotifier *n)
 void ram_block_notifier_remove(RAMBlockNotifier *n)
 {
     QLIST_REMOVE(n, next);
+
+    if (n->ram_block_removed) {
+        qemu_ram_foreach_block(ram_block_notify_remove_single, n);
+    }
 }
 
 void ram_block_notify_add(void *host, size_t size, size_t max_size)
 {
     RAMBlockNotifier *notifier;
+    RAMBlockNotifier *next;
 
-    QLIST_FOREACH(notifier, &ram_list.ramblock_notifiers, next) {
+    QLIST_FOREACH_SAFE(notifier, &ram_list.ramblock_notifiers, next, next) {
         if (notifier->ram_block_added) {
             notifier->ram_block_added(notifier, host, size, max_size);
         }
@@ -851,8 +869,9 @@ 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)
 {
     RAMBlockNotifier *notifier;
+    RAMBlockNotifier *next;
 
-    QLIST_FOREACH(notifier, &ram_list.ramblock_notifiers, next) {
+    QLIST_FOREACH_SAFE(notifier, &ram_list.ramblock_notifiers, next, next) {
         if (notifier->ram_block_removed) {
             notifier->ram_block_removed(notifier, host, size, max_size);
         }
@@ -862,8 +881,9 @@ 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)
 {
     RAMBlockNotifier *notifier;
+    RAMBlockNotifier *next;
 
-    QLIST_FOREACH(notifier, &ram_list.ramblock_notifiers, next) {
+    QLIST_FOREACH_SAFE(notifier, &ram_list.ramblock_notifiers, next, next) {
         if (notifier->ram_block_resized) {
             notifier->ram_block_resized(notifier, host, old_size, new_size);
         }