From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: virtio-dev-return-5107-cohuck=redhat.com@lists.oasis-open.org Sender: List-Post: List-Help: List-Unsubscribe: List-Subscribe: Received: from lists.oasis-open.org (oasis-open.org [10.110.1.242]) by lists.oasis-open.org (Postfix) with ESMTP id B4D43985B2E for ; Mon, 3 Dec 2018 02:51:42 +0000 (UTC) From: Wei Wang Date: Mon, 3 Dec 2018 10:18:30 +0800 Message-Id: <1543803511-34793-7-git-send-email-wei.w.wang@intel.com> In-Reply-To: <1543803511-34793-1-git-send-email-wei.w.wang@intel.com> References: <1543803511-34793-1-git-send-email-wei.w.wang@intel.com> Subject: [virtio-dev] [PATCH v10 6/7] migration/ram.c: add a function to disable the bulk stage To: qemu-devel@nongnu.org, virtio-dev@lists.oasis-open.org, mst@redhat.com, quintela@redhat.com, dgilbert@redhat.com, peterx@redhat.com Cc: pbonzini@redhat.com, liliang.opensource@gmail.com, nilal@redhat.com, riel@redhat.com, wei.w.wang@intel.com List-ID: This patch adds a function to enable a precopy notifier callback outside the migration subsystem to disable the bulk stage flag. This is needed by the free page optimization offered by virtio-balloon. Signed-off-by: Wei Wang CC: Dr. David Alan Gilbert CC: Juan Quintela CC: Michael S. Tsirkin CC: Peter Xu --- include/migration/misc.h | 1 + migration/ram.c | 9 +++++++++ 2 files changed, 10 insertions(+) diff --git a/include/migration/misc.h b/include/migration/misc.h index 15f8d00..47e7ff5 100644 --- a/include/migration/misc.h +++ b/include/migration/misc.h @@ -37,6 +37,7 @@ void precopy_infrastructure_init(void); void precopy_add_notifier(NotifierWithReturn *n); void precopy_remove_notifier(NotifierWithReturn *n); int precopy_notify(PrecopyNotifyReason reason, Error **errp); +void precopy_disable_bulk_stage(void); void ram_mig_init(void); void qemu_guest_free_page_hint(void *addr, size_t len); diff --git a/migration/ram.c b/migration/ram.c index b90a3f2..739dc97 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -354,6 +354,15 @@ int precopy_notify(PrecopyNotifyReason reason, Error **errp) return notifier_with_return_list_notify(&precopy_notifier_list, &pnd); } +void precopy_disable_bulk_stage(void) +{ + if (!ram_state) { + return; + } + + ram_state->ram_bulk_stage = false; +} + uint64_t ram_bytes_remaining(void) { return ram_state ? (ram_state->migration_dirty_pages * TARGET_PAGE_SIZE) : -- 1.8.3.1 --------------------------------------------------------------------- To unsubscribe, e-mail: virtio-dev-unsubscribe@lists.oasis-open.org For additional commands, e-mail: virtio-dev-help@lists.oasis-open.org