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[PATCH v4 13/18] migration/rdma: Add the function for dynamic page regis
From: |
Chuan Zheng |
Subject: |
[PATCH v4 13/18] migration/rdma: Add the function for dynamic page registration |
Date: |
Wed, 3 Feb 2021 16:01:46 +0800 |
Add the 'qemu_rdma_registration' function, multifd send threads
call it to register memory.
Signed-off-by: Zhimin Feng <fengzhimin1@huawei.com>
Signed-off-by: Chuan Zheng <zhengchuan@huawei.com>
---
migration/rdma.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 51 insertions(+)
diff --git a/migration/rdma.c b/migration/rdma.c
index cff9446..1095a8f 100644
--- a/migration/rdma.c
+++ b/migration/rdma.c
@@ -3739,6 +3739,57 @@ out:
return ret;
}
+/*
+ * Dynamic page registrations for multifd RDMA threads.
+ */
+static int qemu_rdma_registration(void *opaque)
+{
+ RDMAContext *rdma = opaque;
+ RDMAControlHeader resp = {.type = RDMA_CONTROL_RAM_BLOCKS_RESULT };
+ RDMALocalBlocks *local = &rdma->local_ram_blocks;
+ int reg_result_idx, i, nb_dest_blocks;
+ RDMAControlHeader head = { .len = 0, .repeat = 1 };
+ int ret = 0;
+
+ head.type = RDMA_CONTROL_RAM_BLOCKS_REQUEST;
+
+ ret = qemu_rdma_exchange_send(rdma, &head, NULL, &resp,
+ ®_result_idx, rdma->pin_all ?
+ qemu_rdma_reg_whole_ram_blocks : NULL);
+ if (ret < 0) {
+ goto out;
+ }
+
+ nb_dest_blocks = resp.len / sizeof(RDMADestBlock);
+
+ if (local->nb_blocks != nb_dest_blocks) {
+ rdma->error_state = -EINVAL;
+ ret = -1;
+ goto out;
+ }
+
+ qemu_rdma_move_header(rdma, reg_result_idx, &resp);
+ memcpy(rdma->dest_blocks,
+ rdma->wr_data[reg_result_idx].control_curr, resp.len);
+
+ for (i = 0; i < nb_dest_blocks; i++) {
+ network_to_dest_block(&rdma->dest_blocks[i]);
+
+ /* We require that the blocks are in the same order */
+ if (rdma->dest_blocks[i].length != local->block[i].length) {
+ rdma->error_state = -EINVAL;
+ ret = -1;
+ goto out;
+ }
+ local->block[i].remote_host_addr =
+ rdma->dest_blocks[i].remote_host_addr;
+ local->block[i].remote_rkey = rdma->dest_blocks[i].remote_rkey;
+ }
+
+out:
+ return ret;
+}
+
/* Destination:
* Called via a ram_control_load_hook during the initial RAM load section which
* lists the RAMBlocks by name. This lets us know the order of the RAMBlocks
--
1.8.3.1
- [PATCH v4 00/18] Support Multifd for RDMA migration, Chuan Zheng, 2021/02/03
- [PATCH v4 04/18] migration/rdma: add multifd_setup_ops for rdma, Chuan Zheng, 2021/02/03
- [PATCH v4 01/18] migration/rdma: add the 'migrate_rdma_pin_all' function, Chuan Zheng, 2021/02/03
- [PATCH v4 05/18] migration/rdma: do not need sync main for rdma, Chuan Zheng, 2021/02/03
- [PATCH v4 12/18] migration/rdma: Create the multifd send channels for RDMA, Chuan Zheng, 2021/02/03
- [PATCH v4 13/18] migration/rdma: Add the function for dynamic page registration,
Chuan Zheng <=
- [PATCH v4 11/18] migration/rdma: record host_port for multifd RDMA, Chuan Zheng, 2021/02/03
- [PATCH v4 07/18] migration/rdma: add rdma field into multifd send/recv param, Chuan Zheng, 2021/02/03
- [PATCH v4 02/18] migration/rdma: judge whether or not the RDMA is used for migration, Chuan Zheng, 2021/02/03
- [PATCH v4 03/18] migration/rdma: create multifd_setup_ops for Tx/Rx thread, Chuan Zheng, 2021/02/03
- [PATCH v4 15/18] migration/rdma: only register the memory for multifd channels, Chuan Zheng, 2021/02/03