From nobody Mon Feb 9 09:09:14 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1527870965118562.3452216231211; Fri, 1 Jun 2018 09:36:05 -0700 (PDT) Received: from localhost ([::1]:56613 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fOn23-0000fq-Gm for importer@patchew.org; Fri, 01 Jun 2018 12:36:03 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:38493) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fOmt3-0001vp-37 for qemu-devel@nongnu.org; Fri, 01 Jun 2018 12:26:46 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fOmt0-000732-9O for qemu-devel@nongnu.org; Fri, 01 Jun 2018 12:26:45 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:52684 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fOmt0-00072b-0z for qemu-devel@nongnu.org; Fri, 01 Jun 2018 12:26:42 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 4624540BC04E; Fri, 1 Jun 2018 16:26:41 +0000 (UTC) Received: from redhat.com (ovpn-121-148.rdu2.redhat.com [10.10.121.148]) by smtp.corp.redhat.com (Postfix) with SMTP id D90F820244E0; Fri, 1 Jun 2018 16:26:40 +0000 (UTC) Date: Fri, 1 Jun 2018 19:26:40 +0300 From: "Michael S. Tsirkin" To: qemu-devel@nongnu.org Message-ID: <20180601162620.32362-2-mst@redhat.com> References: <20180601162620.32362-1-mst@redhat.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20180601162620.32362-1-mst@redhat.com> X-Mutt-Fcc: =sent X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 01 Jun 2018 16:26:41 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 01 Jun 2018 16:26:41 +0000 (UTC) for IP:'10.11.54.4' DOMAIN:'int-mx04.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'mst@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PULL 01/31] vhost: allow backends to filter memory sections X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Maydell , Tiwei Bie Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Tiwei Bie This patch introduces a vhost op for vhost backends to allow them to filter the memory sections that they can handle. Signed-off-by: Tiwei Bie Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- include/hw/virtio/vhost-backend.h | 4 ++++ hw/virtio/vhost-user.c | 11 +++++++++++ hw/virtio/vhost.c | 9 +++++++-- 3 files changed, 22 insertions(+), 2 deletions(-) diff --git a/include/hw/virtio/vhost-backend.h b/include/hw/virtio/vhost-ba= ckend.h index 5dac61f9ea..81283ec50f 100644 --- a/include/hw/virtio/vhost-backend.h +++ b/include/hw/virtio/vhost-backend.h @@ -101,6 +101,9 @@ typedef int (*vhost_crypto_create_session_op)(struct vh= ost_dev *dev, typedef int (*vhost_crypto_close_session_op)(struct vhost_dev *dev, uint64_t session_id); =20 +typedef bool (*vhost_backend_mem_section_filter_op)(struct vhost_dev *dev, + MemoryRegionSection *secti= on); + typedef struct VhostOps { VhostBackendType backend_type; vhost_backend_init vhost_backend_init; @@ -138,6 +141,7 @@ typedef struct VhostOps { vhost_set_config_op vhost_set_config; vhost_crypto_create_session_op vhost_crypto_create_session; vhost_crypto_close_session_op vhost_crypto_close_session; + vhost_backend_mem_section_filter_op vhost_backend_mem_section_filter; } VhostOps; =20 extern const VhostOps user_ops; diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c index ca554d4ff1..da0756effe 100644 --- a/hw/virtio/vhost-user.c +++ b/hw/virtio/vhost-user.c @@ -1620,6 +1620,16 @@ vhost_user_crypto_close_session(struct vhost_dev *de= v, uint64_t session_id) return 0; } =20 +static bool vhost_user_mem_section_filter(struct vhost_dev *dev, + MemoryRegionSection *section) +{ + bool result; + + result =3D memory_region_get_fd(section->mr) >=3D 0; + + return result; +} + const VhostOps user_ops =3D { .backend_type =3D VHOST_BACKEND_TYPE_USER, .vhost_backend_init =3D vhost_user_init, @@ -1650,4 +1660,5 @@ const VhostOps user_ops =3D { .vhost_set_config =3D vhost_user_set_config, .vhost_crypto_create_session =3D vhost_user_crypto_create_session, .vhost_crypto_close_session =3D vhost_user_crypto_close_session, + .vhost_backend_mem_section_filter =3D vhost_user_mem_section_filte= r, }; diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index b08290036d..624ade9682 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -386,7 +386,7 @@ static int vhost_verify_ring_mappings(struct vhost_dev = *dev, return r; } =20 -static bool vhost_section(MemoryRegionSection *section) +static bool vhost_section(struct vhost_dev *dev, MemoryRegionSection *sect= ion) { bool result; bool log_dirty =3D memory_region_get_dirty_log_mask(section->mr) & @@ -399,6 +399,11 @@ static bool vhost_section(MemoryRegionSection *section) */ result &=3D !log_dirty; =20 + if (result && dev->vhost_ops->vhost_backend_mem_section_filter) { + result &=3D + dev->vhost_ops->vhost_backend_mem_section_filter(dev, section); + } + trace_vhost_section(section->mr->name, result); return result; } @@ -632,7 +637,7 @@ static void vhost_region_addnop(MemoryListener *listene= r, struct vhost_dev *dev =3D container_of(listener, struct vhost_dev, memory_listener); =20 - if (!vhost_section(section)) { + if (!vhost_section(dev, section)) { return; } vhost_region_add_section(dev, section); --=20 MST