From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 7DBE0C433F5 for ; Mon, 29 Nov 2021 03:40:03 +0000 (UTC) Received: from localhost ([::1]:54250 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mrXWK-00089s-N3 for qemu-devel@archiver.kernel.org; Sun, 28 Nov 2021 22:40:00 -0500 Received: from eggs.gnu.org ([209.51.188.92]:45776) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mrX2Y-0003Iy-F2 for qemu-devel@nongnu.org; Sun, 28 Nov 2021 22:09:15 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]:55335) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mrX2H-0000oM-R5 for qemu-devel@nongnu.org; Sun, 28 Nov 2021 22:09:13 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1638155336; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=y0kGTazpC1hjqZJ3ZITfcdKvTgElW1SKcXtZziw7R4Y=; b=ibqB2zbEExuo4LCkWvcNEt30m4jaytWN19AQyFan37eOF79ftpXxqjkBGFO5+URb9P6G/8 9/2RE9e6sBMzkSUs+XbXQtdCpX1PUohd5IqlV4WaqLL6MvX5NaezOmw1UejeXWKstlwoYm Z6PR08J+RmY80Sp/IX6M8nojoZEbbYc= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-231-3o_YLv-1O8G_mUtYqh37mw-1; Sun, 28 Nov 2021 22:08:54 -0500 X-MC-Unique: 3o_YLv-1O8G_mUtYqh37mw-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id CCCF1101AFA7; Mon, 29 Nov 2021 03:08:53 +0000 (UTC) Received: from localhost.localdomain (ovpn-13-14.pek2.redhat.com [10.72.13.14]) by smtp.corp.redhat.com (Postfix) with ESMTP id D3A3460BF1; Mon, 29 Nov 2021 03:08:43 +0000 (UTC) From: Jason Wang To: mst@redhat.com, david@redhat.com Subject: [PATCH V2 1/2] virtio-balloon: process all in sgs for free_page_vq Date: Mon, 29 Nov 2021 11:08:40 +0800 Message-Id: <20211129030841.3611-1-jasowang@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=jasowang@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset="US-ASCII" Received-SPF: pass client-ip=170.10.129.124; envelope-from=jasowang@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.716, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, T_SPF_TEMPERROR=0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jason Wang , wei.w.wang@intel.com, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" We only process the first in sg which may lead to the bitmap of the pages belongs to following sgs were not cleared. This may result more pages to be migrated. Fixing this by process all in sgs for free_page_vq. Acked-by: David Hildenbrand Signed-off-by: Jason Wang --- Changes since V1: - fix typo in the subject --- hw/virtio/virtio-balloon.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/hw/virtio/virtio-balloon.c b/hw/virtio/virtio-balloon.c index c6962fcbfe..17de2558cb 100644 --- a/hw/virtio/virtio-balloon.c +++ b/hw/virtio/virtio-balloon.c @@ -510,6 +510,7 @@ static bool get_free_page_hints(VirtIOBalloon *dev) VirtIODevice *vdev = VIRTIO_DEVICE(dev); VirtQueue *vq = dev->free_page_vq; bool ret = true; + int i; while (dev->block_iothread) { qemu_cond_wait(&dev->free_page_cond, &dev->free_page_lock); @@ -544,8 +545,10 @@ static bool get_free_page_hints(VirtIOBalloon *dev) } if (elem->in_num && dev->free_page_hint_status == FREE_PAGE_HINT_S_START) { - qemu_guest_free_page_hint(elem->in_sg[0].iov_base, - elem->in_sg[0].iov_len); + for (i = 0; i < elem->in_num; i++) { + qemu_guest_free_page_hint(elem->in_sg[i].iov_base, + elem->in_sg[i].iov_len); + } } out: -- 2.25.1