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a="67685146" X-IronPort-AV: E=Sophos;i="6.17,312,1747724400"; d="scan'208";a="67685146" X-CSE-ConnectionGUID: lkHz89efQBqT/UNKHyOUew== X-CSE-MsgGUID: LecCX/G6T1e4nO4X0X1RRA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,263,1754982000"; d="scan'208";a="185529902" From: Zhenzhong Duan To: qemu-devel@nongnu.org Cc: alex@shazbot.org, clg@redhat.com, mst@redhat.com, jasowang@redhat.com, yi.l.liu@intel.com, clement.mathieu--drif@eviden.com, eric.auger@redhat.com, joao.m.martins@oracle.com, avihaih@nvidia.com, xudong.hao@intel.com, giovanni.cabiddu@intel.com, rohith.s.r@intel.com, mark.gross@intel.com, arjan.van.de.ven@intel.com, Zhenzhong Duan Subject: [PATCH v4 08/10] vfio/migration: Fix a check on vbasedev->iommu_dirty_tracking Date: Wed, 29 Oct 2025 05:53:51 -0400 Message-ID: <20251029095354.56305-9-zhenzhong.duan@intel.com> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20251029095354.56305-1-zhenzhong.duan@intel.com> References: <20251029095354.56305-1-zhenzhong.duan@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=198.175.65.14; envelope-from=zhenzhong.duan@intel.com; helo=mgamail.intel.com X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 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: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @intel.com) X-ZM-MESSAGEID: 1761731790549158500 Content-Type: text/plain; charset="utf-8" VFIO IOMMU type1 claims to support IOMMU dirty tracking by setting bcontainer->dirty_pages_supported, but in vfio_migration_realize() vbasedev->iommu_dirty_tracking is checked, we should pass bcontainer->dirty_pages_supported to vbasedev->iommu_dirty_tracking in legacy backend so that the check is accurate. Fixes: 30b916778517 ("vfio/common: Allow disabling device dirty page tracki= ng") Signed-off-by: Zhenzhong Duan --- hw/vfio/container-legacy.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/hw/vfio/container-legacy.c b/hw/vfio/container-legacy.c index dd9c4a6a5a..fa726a2733 100644 --- a/hw/vfio/container-legacy.c +++ b/hw/vfio/container-legacy.c @@ -845,6 +845,7 @@ static bool vfio_device_get(VFIOGroup *group, const cha= r *name, VFIODevice *vbasedev, Error **errp) { g_autofree struct vfio_device_info *info =3D NULL; + VFIOContainer *bcontainer =3D VFIO_IOMMU(group->container); int fd; =20 fd =3D vfio_cpr_group_get_device_fd(group->fd, name); @@ -883,7 +884,8 @@ static bool vfio_device_get(VFIOGroup *group, const cha= r *name, } } =20 - vfio_device_prepare(vbasedev, VFIO_IOMMU(group->container), info); + vfio_device_prepare(vbasedev, bcontainer, info); + vbasedev->iommu_dirty_tracking =3D bcontainer->dirty_pages_supported; =20 vbasedev->fd =3D fd; vbasedev->group =3D group; --=20 2.47.1