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-rw-r--r--migration/rdma.c18
1 files changed, 16 insertions, 2 deletions
diff --git a/migration/rdma.c b/migration/rdma.c
index ec45d33..bbe6f36 100644
--- a/migration/rdma.c
+++ b/migration/rdma.c
@@ -29,6 +29,7 @@
#include "qemu/sockets.h"
#include "qemu/bitmap.h"
#include "qemu/coroutine.h"
+#include "exec/memory.h"
#include <sys/socket.h>
#include <netdb.h>
#include <arpa/inet.h>
@@ -4017,8 +4018,14 @@ void rdma_start_incoming_migration(const char *host_port, Error **errp)
Error *local_err = NULL;
trace_rdma_start_incoming_migration();
- rdma = qemu_rdma_data_init(host_port, &local_err);
+ /* Avoid ram_block_discard_disable(), cannot change during migration. */
+ if (ram_block_discard_is_required()) {
+ error_setg(errp, "RDMA: cannot disable RAM discard");
+ return;
+ }
+
+ rdma = qemu_rdma_data_init(host_port, &local_err);
if (rdma == NULL) {
goto err;
}
@@ -4067,10 +4074,17 @@ void rdma_start_outgoing_migration(void *opaque,
const char *host_port, Error **errp)
{
MigrationState *s = opaque;
- RDMAContext *rdma = qemu_rdma_data_init(host_port, errp);
RDMAContext *rdma_return_path = NULL;
+ RDMAContext *rdma;
int ret = 0;
+ /* Avoid ram_block_discard_disable(), cannot change during migration. */
+ if (ram_block_discard_is_required()) {
+ error_setg(errp, "RDMA: cannot disable RAM discard");
+ return;
+ }
+
+ rdma = qemu_rdma_data_init(host_port, errp);
if (rdma == NULL) {
goto err;
}