qemu-kvm/kvm-migration-Move-migrate_use_return-to-options.c.patch

From 145b630767dbc7020ddf39b20075f4691f71321a Mon Sep 17 00:00:00 2001
From: Juan Quintela <quintela@redhat.com>
Date: Wed, 1 Mar 2023 22:25:47 +0100
Subject: [PATCH 31/56] migration: Move migrate_use_return() to options.c
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

RH-Author: Peter Xu <peterx@redhat.com>
RH-MergeRequest: 162: migration: Pretty failures for postcopy on unsupported memory types
RH-Bugzilla: 2057267
RH-Acked-by: Leonardo Brás <leobras@redhat.com>
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
RH-Acked-by: quintela1 <quintela@redhat.com>
RH-Commit: [30/50] 5cc150188bcc61b69ea0844253597594ab18fc13 (peterx/qemu-kvm)

Once that we are there, we rename the function to migrate_return_path()
to be consistent with all other capabilities.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
(cherry picked from commit 38ad1110e368bf91453c0abbd657224d57b65d47)
Signed-off-by: Peter Xu <peterx@redhat.com>
---
 migration/migration.c | 11 +----------
 migration/migration.h |  1 -
 migration/options.c   |  9 +++++++++
 migration/options.h   |  1 +
 migration/rdma.c      |  6 +++---
 5 files changed, 14 insertions(+), 14 deletions(-)

diff --git a/migration/migration.c b/migration/migration.c
index 96f82bd165..f7facecd66 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -2622,15 +2622,6 @@ static int64_t migrate_max_postcopy_bandwidth(void)
     return s->parameters.max_postcopy_bandwidth;
 }
 
-bool migrate_use_return_path(void)
-{
-    MigrationState *s;
-
-    s = migrate_get_current();
-
-    return s->capabilities[MIGRATION_CAPABILITY_RETURN_PATH];
-}
-
 bool migrate_use_block_incremental(void)
 {
     MigrationState *s;
@@ -4175,7 +4166,7 @@ void migrate_fd_connect(MigrationState *s, Error *error_in)
      * precopy, only if user specified "return-path" capability would
      * QEMU uses the return path.
      */
-    if (migrate_postcopy_ram() || migrate_use_return_path()) {
+    if (migrate_postcopy_ram() || migrate_return_path()) {
         if (open_return_path_on_source(s, !resume)) {
             error_report("Unable to open return-path for postcopy");
             migrate_set_state(&s->state, s->state, MIGRATION_STATUS_FAILED);
diff --git a/migration/migration.h b/migration/migration.h
index d4b68b08a5..24184622a8 100644
--- a/migration/migration.h
+++ b/migration/migration.h
@@ -459,7 +459,6 @@ uint64_t migrate_xbzrle_cache_size(void);
 
 bool migrate_use_block_incremental(void);
 int migrate_max_cpu_throttle(void);
-bool migrate_use_return_path(void);
 
 uint64_t ram_get_total_transferred_pages(void);
 
diff --git a/migration/options.c b/migration/options.c
index fe1eadeed6..2003e413da 100644
--- a/migration/options.c
+++ b/migration/options.c
@@ -147,6 +147,15 @@ bool migrate_release_ram(void)
     return s->capabilities[MIGRATION_CAPABILITY_RELEASE_RAM];
 }
 
+bool migrate_return_path(void)
+{
+    MigrationState *s;
+
+    s = migrate_get_current();
+
+    return s->capabilities[MIGRATION_CAPABILITY_RETURN_PATH];
+}
+
 bool migrate_validate_uuid(void)
 {
     MigrationState *s;
diff --git a/migration/options.h b/migration/options.h
index e985a5233e..316efd1063 100644
--- a/migration/options.h
+++ b/migration/options.h
@@ -31,6 +31,7 @@ bool migrate_postcopy_blocktime(void);
 bool migrate_postcopy_preempt(void);
 bool migrate_postcopy_ram(void);
 bool migrate_release_ram(void);
+bool migrate_return_path(void);
 bool migrate_validate_uuid(void);
 bool migrate_xbzrle(void);
 bool migrate_zero_blocks(void);
diff --git a/migration/rdma.c b/migration/rdma.c
index f35f021963..bf55e2f163 100644
--- a/migration/rdma.c
+++ b/migration/rdma.c
@@ -3373,7 +3373,7 @@ static int qemu_rdma_accept(RDMAContext *rdma)
      * initialize the RDMAContext for return path for postcopy after first
      * connection request reached.
      */
-    if ((migrate_postcopy() || migrate_use_return_path())
+    if ((migrate_postcopy() || migrate_return_path())
         && !rdma->is_return_path) {
         rdma_return_path = qemu_rdma_data_init(rdma->host_port, NULL);
         if (rdma_return_path == NULL) {
@@ -3456,7 +3456,7 @@ static int qemu_rdma_accept(RDMAContext *rdma)
     }
 
     /* Accept the second connection request for return path */
-    if ((migrate_postcopy() || migrate_use_return_path())
+    if ((migrate_postcopy() || migrate_return_path())
         && !rdma->is_return_path) {
         qemu_set_fd_handler(rdma->channel->fd, rdma_accept_incoming_migration,
                             NULL,
@@ -4193,7 +4193,7 @@ void rdma_start_outgoing_migration(void *opaque,
     }
 
     /* RDMA postcopy need a separate queue pair for return path */
-    if (migrate_postcopy() || migrate_use_return_path()) {
+    if (migrate_postcopy() || migrate_return_path()) {
         rdma_return_path = qemu_rdma_data_init(host_port, errp);
 
         if (rdma_return_path == NULL) {
-- 
2.39.1