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 X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 720AEC7618B for ; Thu, 25 Jul 2019 11:37:02 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 47760218F0 for ; Thu, 25 Jul 2019 11:37:02 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 47760218F0 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:58848 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hqc3Q-0001P3-VL for qemu-devel@archiver.kernel.org; Thu, 25 Jul 2019 07:37:00 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:51180) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hqc3F-0000z4-Lq for qemu-devel@nongnu.org; Thu, 25 Jul 2019 07:36:50 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hqc3E-00034s-Kx for qemu-devel@nongnu.org; Thu, 25 Jul 2019 07:36:49 -0400 Received: from mx1.redhat.com ([209.132.183.28]:39186) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hqc3E-00034Y-F6; Thu, 25 Jul 2019 07:36:48 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 705B73084248; Thu, 25 Jul 2019 11:36:47 +0000 (UTC) Received: from t460s.redhat.com (ovpn-117-70.ams2.redhat.com [10.36.117.70]) by smtp.corp.redhat.com (Postfix) with ESMTP id 0CAAB5B6A5; Thu, 25 Jul 2019 11:36:38 +0000 (UTC) From: David Hildenbrand To: qemu-devel@nongnu.org Date: Thu, 25 Jul 2019 13:36:31 +0200 Message-Id: <20190725113638.4702-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.40]); Thu, 25 Jul 2019 11:36:47 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH-for-4.1 v4 0/7] virtio-balloon: fixes X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "Michael S . Tsirkin" , David Hildenbrand , qemu-stable@nongnu.org, Stefan Hajnoczi , Igor Mammedov , David Gibson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" As we discovered yet another issue with current PBP code, we decided to use a temporary PBP only, limited to one series of inflation requests. Patch #1 is a fix for a wrong sign extension (MST brought this up but wasn't sure if it is broken - I think it is indeed broken). Patch #2 fixe= d QEMU segfaults. Patch #3 and #4 are cleanups that make follow-up fixes easier. Patch #5 avoids using RAMBlock addresses as tokens and patch #6 fixes all kinds of issues related to using a global PBP. Patch #7 gets rid of a temporary workaround from patch #5. We want to have patches 1-6 in 4.1 and backport them to 4.0. Patch #1 needs backports to basically all QEMU releases with virtio-balloon. Did a quick sanity test, hopefully no other BUG sneeked in. Will do some more testing. v3 -> v4: - Add "virtio-balloon: No need to track subpages for the PBP anymore", which doesn't need a stable backport Cc: Stefan Hajnoczi Cc: David Gibson Cc: Michael S. Tsirkin Cc: Igor Mammedov Cc: qemu-stable@nongnu.org David Hildenbrand (7): virtio-balloon: Fix wrong sign extension of PFNs virtio-balloon: Fix QEMU crashes on pagesize > BALLOON_PAGE_SIZE virtio-balloon: Simplify deflate with pbp virtio-balloon: Better names for offset variables in inflate/deflate code virtio-balloon: Rework pbp tracking data virtio-balloon: Use temporary PBP only virtio-balloon: No need to track subpages for the PBP anymore hw/virtio/virtio-balloon.c | 120 ++++++++++++++--------------- include/hw/virtio/virtio-balloon.h | 3 - 2 files changed, 60 insertions(+), 63 deletions(-) --=20 2.21.0