diff options
Diffstat (limited to 'migration')
| -rw-r--r-- | migration/multifd.c | 34 | ||||
| -rw-r--r-- | migration/multifd.h | 8 |
2 files changed, 30 insertions, 12 deletions
diff --git a/migration/multifd.c b/migration/multifd.c index 4d62850..f75bd3c 100644 --- a/migration/multifd.c +++ b/migration/multifd.c @@ -86,7 +86,16 @@ static void nocomp_send_cleanup(MultiFDSendParams *p, Error **errp) */ static int nocomp_send_prepare(MultiFDSendParams *p, Error **errp) { - p->next_packet_size = p->pages->num * qemu_target_page_size(); + MultiFDPages_t *pages = p->pages; + size_t page_size = qemu_target_page_size(); + + for (int i = 0; i < p->pages->num; i++) { + p->iov[p->iovs_num].iov_base = pages->block->host + pages->offset[i]; + p->iov[p->iovs_num].iov_len = page_size; + p->iovs_num++; + } + + p->next_packet_size = p->pages->num * page_size; p->flags |= MULTIFD_FLAG_NOCOMP; return 0; } @@ -104,7 +113,7 @@ static int nocomp_send_prepare(MultiFDSendParams *p, Error **errp) */ static int nocomp_send_write(MultiFDSendParams *p, uint32_t used, Error **errp) { - return qio_channel_writev_all(p->c, p->pages->iov, used, errp); + return qio_channel_writev_all(p->c, p->iov, p->iovs_num, errp); } /** @@ -146,13 +155,18 @@ static void nocomp_recv_cleanup(MultiFDRecvParams *p) static int nocomp_recv_pages(MultiFDRecvParams *p, Error **errp) { uint32_t flags = p->flags & MULTIFD_FLAG_COMPRESSION_MASK; + size_t page_size = qemu_target_page_size(); if (flags != MULTIFD_FLAG_NOCOMP) { error_setg(errp, "multifd %u: flags received %x flags expected %x", p->id, flags, MULTIFD_FLAG_NOCOMP); return -1; } - return qio_channel_readv_all(p->c, p->pages->iov, p->pages->num, errp); + for (int i = 0; i < p->pages->num; i++) { + p->iov[i].iov_base = p->pages->block->host + p->pages->offset[i]; + p->iov[i].iov_len = page_size; + } + return qio_channel_readv_all(p->c, p->iov, p->pages->num, errp); } static MultiFDMethods multifd_nocomp_ops = { @@ -242,7 +256,6 @@ static MultiFDPages_t *multifd_pages_init(size_t size) MultiFDPages_t *pages = g_new0(MultiFDPages_t, 1); pages->allocated = size; - pages->iov = g_new0(struct iovec, size); pages->offset = g_new0(ram_addr_t, size); return pages; @@ -254,8 +267,6 @@ static void multifd_pages_clear(MultiFDPages_t *pages) pages->allocated = 0; pages->packet_num = 0; pages->block = NULL; - g_free(pages->iov); - pages->iov = NULL; g_free(pages->offset); pages->offset = NULL; g_free(pages); @@ -365,8 +376,6 @@ static int multifd_recv_unfill_packet(MultiFDRecvParams *p, Error **errp) return -1; } p->pages->offset[i] = offset; - p->pages->iov[i].iov_base = block->host + offset; - p->pages->iov[i].iov_len = page_size; } return 0; @@ -470,8 +479,6 @@ int multifd_queue_page(QEMUFile *f, RAMBlock *block, ram_addr_t offset) if (pages->block == block) { pages->offset[pages->num] = offset; - pages->iov[pages->num].iov_base = block->host + offset; - pages->iov[pages->num].iov_len = qemu_target_page_size(); pages->num++; if (pages->num < pages->allocated) { @@ -567,6 +574,8 @@ void multifd_save_cleanup(void) p->packet_len = 0; g_free(p->packet); p->packet = NULL; + g_free(p->iov); + p->iov = NULL; multifd_send_state->ops->send_cleanup(p, &local_err); if (local_err) { migrate_set_error(migrate_get_current(), local_err); @@ -654,6 +663,7 @@ static void *multifd_send_thread(void *opaque) uint32_t used = p->pages->num; uint64_t packet_num = p->packet_num; uint32_t flags = p->flags; + p->iovs_num = 0; if (used) { ret = multifd_send_state->ops->send_prepare(p, &local_err); @@ -922,6 +932,7 @@ int multifd_save_setup(Error **errp) p->packet->version = cpu_to_be32(MULTIFD_VERSION); p->name = g_strdup_printf("multifdsend_%d", i); p->tls_hostname = g_strdup(s->hostname); + p->iov = g_new0(struct iovec, page_count); socket_send_channel_create(multifd_new_send_channel_async, p); } @@ -1021,6 +1032,8 @@ int multifd_load_cleanup(Error **errp) p->packet_len = 0; g_free(p->packet); p->packet = NULL; + g_free(p->iov); + p->iov = NULL; multifd_recv_state->ops->recv_cleanup(p); } qemu_sem_destroy(&multifd_recv_state->sem_sync); @@ -1161,6 +1174,7 @@ int multifd_load_setup(Error **errp) + sizeof(uint64_t) * page_count; p->packet = g_malloc0(p->packet_len); p->name = g_strdup_printf("multifdrecv_%d", i); + p->iov = g_new0(struct iovec, page_count); } for (i = 0; i < thread_count; i++) { diff --git a/migration/multifd.h b/migration/multifd.h index e57adc7..c3f18af 100644 --- a/migration/multifd.h +++ b/migration/multifd.h @@ -62,8 +62,6 @@ typedef struct { uint64_t packet_num; /* offset of each page */ ram_addr_t *offset; - /* pointer to each page */ - struct iovec *iov; RAMBlock *block; } MultiFDPages_t; @@ -110,6 +108,10 @@ typedef struct { uint64_t num_pages; /* syncs main thread and channels */ QemuSemaphore sem_sync; + /* buffers to send */ + struct iovec *iov; + /* number of iovs used */ + uint32_t iovs_num; /* used for compression methods */ void *data; } MultiFDSendParams; @@ -149,6 +151,8 @@ typedef struct { uint64_t num_pages; /* syncs main thread and channels */ QemuSemaphore sem_sync; + /* buffers to recv */ + struct iovec *iov; /* used for de-compression methods */ void *data; } MultiFDRecvParams; |