From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:39998) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fQDsl-00083u-OI for qemu-devel@nongnu.org; Tue, 05 Jun 2018 11:28:24 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fQDsj-0003mH-DN for qemu-devel@nongnu.org; Tue, 05 Jun 2018 11:28:23 -0400 Received: from mail-pl0-x230.google.com ([2607:f8b0:400e:c01::230]:46320) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1fQDsj-0003lt-67 for qemu-devel@nongnu.org; Tue, 05 Jun 2018 11:28:21 -0400 Received: by mail-pl0-x230.google.com with SMTP id 30-v6so1720750pld.13 for ; Tue, 05 Jun 2018 08:28:21 -0700 (PDT) From: Lidong Chen Date: Tue, 5 Jun 2018 23:28:00 +0800 Message-Id: <1528212489-19137-2-git-send-email-lidongchen@tencent.com> In-Reply-To: <1528212489-19137-1-git-send-email-lidongchen@tencent.com> References: <1528212489-19137-1-git-send-email-lidongchen@tencent.com> Subject: [Qemu-devel] [PATCH v5 01/10] migration: disable RDMA WRITE after postcopy started List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: zhang.zhanghailiang@huawei.com, quintela@redhat.com, dgilbert@redhat.com, berrange@redhat.com, aviadye@mellanox.com, pbonzini@redhat.com Cc: qemu-devel@nongnu.org, adido@mellanox.com, galsha@mellanox.com, Lidong Chen , Lidong Chen From: Lidong Chen RDMA WRITE operations are performed with no notification to the destination qemu, then the destination qemu can not wakeup. This patch disable RDMA WRITE after postcopy started. Signed-off-by: Lidong Chen Reviewed-by: Dr. David Alan Gilbert --- migration/qemu-file.c | 8 ++++++-- migration/rdma.c | 12 ++++++++++++ 2 files changed, 18 insertions(+), 2 deletions(-) diff --git a/migration/qemu-file.c b/migration/qemu-file.c index 0463f4c..977b9ae 100644 --- a/migration/qemu-file.c +++ b/migration/qemu-file.c @@ -253,8 +253,12 @@ size_t ram_control_save_page(QEMUFile *f, ram_addr_t block_offset, if (f->hooks && f->hooks->save_page) { int ret = f->hooks->save_page(f, f->opaque, block_offset, offset, size, bytes_sent); - f->bytes_xfer += size; - if (ret != RAM_SAVE_CONTROL_DELAYED) { + if (ret != RAM_SAVE_CONTROL_NOT_SUPP) { + f->bytes_xfer += size; + } + + if (ret != RAM_SAVE_CONTROL_DELAYED && + ret != RAM_SAVE_CONTROL_NOT_SUPP) { if (bytes_sent && *bytes_sent > 0) { qemu_update_position(f, *bytes_sent); } else if (ret < 0) { diff --git a/migration/rdma.c b/migration/rdma.c index 05aee3d..185ed98 100644 --- a/migration/rdma.c +++ b/migration/rdma.c @@ -2921,6 +2921,10 @@ static size_t qemu_rdma_save_page(QEMUFile *f, void *opaque, CHECK_ERROR_STATE(); + if (migrate_get_current()->state == MIGRATION_STATUS_POSTCOPY_ACTIVE) { + return RAM_SAVE_CONTROL_NOT_SUPP; + } + qemu_fflush(f); if (size > 0) { @@ -3480,6 +3484,10 @@ static int qemu_rdma_registration_start(QEMUFile *f, void *opaque, CHECK_ERROR_STATE(); + if (migrate_get_current()->state == MIGRATION_STATUS_POSTCOPY_ACTIVE) { + return 0; + } + trace_qemu_rdma_registration_start(flags); qemu_put_be64(f, RAM_SAVE_FLAG_HOOK); qemu_fflush(f); @@ -3502,6 +3510,10 @@ static int qemu_rdma_registration_stop(QEMUFile *f, void *opaque, CHECK_ERROR_STATE(); + if (migrate_get_current()->state == MIGRATION_STATUS_POSTCOPY_ACTIVE) { + return 0; + } + qemu_fflush(f); ret = qemu_rdma_drain_cq(f, rdma); -- 1.8.3.1