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[PATCH v3 04/13] migration/rdma: Remove all uses of RAM_CONTROL_HOOK
From: |
Juan Quintela |
Subject: |
[PATCH v3 04/13] migration/rdma: Remove all uses of RAM_CONTROL_HOOK |
Date: |
Wed, 11 Oct 2023 22:35:18 +0200 |
Instead of going trhough ram_control_load_hook(), call
qemu_rdma_registration_handle() directly.
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
---
migration/qemu-file.h | 1 -
migration/rdma.h | 3 +++
migration/ram.c | 5 ++++-
migration/rdma.c | 12 +++++++-----
4 files changed, 14 insertions(+), 7 deletions(-)
diff --git a/migration/qemu-file.h b/migration/qemu-file.h
index 35e671a01e..14ff0d9cc4 100644
--- a/migration/qemu-file.h
+++ b/migration/qemu-file.h
@@ -41,7 +41,6 @@ typedef int (QEMURamHookFunc)(QEMUFile *f, uint64_t flags,
void *data);
*/
#define RAM_CONTROL_SETUP 0
#define RAM_CONTROL_ROUND 1
-#define RAM_CONTROL_HOOK 2
#define RAM_CONTROL_FINISH 3
#define RAM_CONTROL_BLOCK_REG 4
diff --git a/migration/rdma.h b/migration/rdma.h
index c13b94c782..8bd277efb9 100644
--- a/migration/rdma.h
+++ b/migration/rdma.h
@@ -24,10 +24,13 @@ void rdma_start_incoming_migration(const char *host_port,
Error **errp);
#ifdef CONFIG_RDMA
+int qemu_rdma_registration_handle(QEMUFile *f);
int qemu_rdma_registration_start(QEMUFile *f, uint64_t flags);
int qemu_rdma_registration_stop(QEMUFile *f, uint64_t flags);
#else
static inline
+int qemu_rdma_registration_handle(QEMUFile *f) { return 0; }
+static inline
int qemu_rdma_registration_start(QEMUFile *f, uint64_t flags) { return 0; }
static inline
int qemu_rdma_registration_stop(QEMUFile *f, uint64_t flags) { return 0; }
diff --git a/migration/ram.c b/migration/ram.c
index 15bd4ad697..ee8bdcdc82 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -4072,7 +4072,10 @@ static int ram_load_precopy(QEMUFile *f)
}
break;
case RAM_SAVE_FLAG_HOOK:
- ram_control_load_hook(f, RAM_CONTROL_HOOK, NULL);
+ ret = qemu_rdma_registration_handle(f);
+ if (ret < 0) {
+ qemu_file_set_error(f, ret);
+ }
break;
default:
error_report("Unknown combination of migration flags: 0x%x",
flags);
diff --git a/migration/rdma.c b/migration/rdma.c
index 99c0914a23..e533814599 100644
--- a/migration/rdma.c
+++ b/migration/rdma.c
@@ -3522,7 +3522,7 @@ static int dest_ram_sort_func(const void *a, const void
*b)
*
* Keep doing this until the source tells us to stop.
*/
-static int qemu_rdma_registration_handle(QEMUFile *f)
+int qemu_rdma_registration_handle(QEMUFile *f)
{
RDMAControlHeader reg_resp = { .len = sizeof(RDMARegisterResult),
.type = RDMA_CONTROL_REGISTER_RESULT,
@@ -3534,7 +3534,7 @@ static int qemu_rdma_registration_handle(QEMUFile *f)
};
RDMAControlHeader blocks = { .type = RDMA_CONTROL_RAM_BLOCKS_RESULT,
.repeat = 1 };
- QIOChannelRDMA *rioc = QIO_CHANNEL_RDMA(qemu_file_get_ioc(f));
+ QIOChannelRDMA *rioc;
Error *err = NULL;
RDMAContext *rdma;
RDMALocalBlocks *local;
@@ -3550,7 +3550,12 @@ static int qemu_rdma_registration_handle(QEMUFile *f)
int count = 0;
int i = 0;
+ if (!migrate_rdma()) {
+ return 0;
+ }
+
RCU_READ_LOCK_GUARD();
+ rioc = QIO_CHANNEL_RDMA(qemu_file_get_ioc(f));
rdma = qatomic_rcu_read(&rioc->rdmain);
if (!rdma) {
@@ -3841,9 +3846,6 @@ static int rdma_load_hook(QEMUFile *f, uint64_t flags,
void *data)
case RAM_CONTROL_BLOCK_REG:
return rdma_block_notification_handle(f, data);
- case RAM_CONTROL_HOOK:
- return qemu_rdma_registration_handle(f);
-
default:
/* Shouldn't be called with any other values */
abort();
--
2.41.0
- [PATCH v3 00/13] Removal of QEMUFileHooks, Juan Quintela, 2023/10/11
- [PATCH v3 01/13] migration: Create migrate_rdma(), Juan Quintela, 2023/10/11
- [PATCH v3 03/13] migration/rdma: Unfold ram_control_after_iterate(), Juan Quintela, 2023/10/11
- [PATCH v3 04/13] migration/rdma: Remove all uses of RAM_CONTROL_HOOK,
Juan Quintela <=
- [PATCH v3 05/13] migration/rdma: Unfold hook_ram_load(), Juan Quintela, 2023/10/11
- [PATCH v3 06/13] migration/rdma: Create rdma_control_save_page(), Juan Quintela, 2023/10/11
- [PATCH v3 07/13] qemu-file: Remove QEMUFileHooks, Juan Quintela, 2023/10/11
- [PATCH v3 09/13] migration/rdma: Remove qemu_ prefix from exported functions, Juan Quintela, 2023/10/11
- [PATCH v3 02/13] migration/rdma: Unfold ram_control_before_iterate(), Juan Quintela, 2023/10/11