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s=corp-2023-11-20; bh=00rhp7sEaBao9fZK25CsubWytfXi59TieXd0DCtSP+Y=; b=HHmKDcZKyreqPuhtgNagUT359M3XnUNUZ1GYOtrMqFcBLFRF7bj7rWecDuGZscnqSsPz Xt8ZcFrjfGOFVOdK/0l1qD7uDlO/SUEZP8ZloJGxeu2tBTETlEstHxUanJ60vFCJnRC5 h0EiFDaA3ZvVeSpX6zE8T5E+9/qRUFMSBk7Ikgw/uPZPOEir1D8Rn9Z6I+t4DSFTHtTy h0S7GCsGvFfDLEkDU762KCZEm65QgVMcHSY+zePAg71NQKRMIOSfbGHGRyI89Po5k9aB Ot5QO8V7p9e/C7MXVhGVOyNevE6OgbBjtsPrxRQYxjJJMyIEf1nNCJLjmcrHegT10zPf Cg== From: Si-Wei Liu To: eperezma@redhat.com, jasowang@redhat.com, mst@redhat.com, dtatulea@nvidia.com, leiyang@redhat.com, yin31149@gmail.com Cc: qemu-devel@nongnu.org Subject: [PATCH 01/12] vdpa: add back vhost_vdpa_net_first_nc_vdpa Date: Wed, 14 Feb 2024 03:27:51 -0800 Message-Id: <1707910082-10243-2-git-send-email-si-wei.liu@oracle.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1707910082-10243-1-git-send-email-si-wei.liu@oracle.com> References: <1707910082-10243-1-git-send-email-si-wei.liu@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-02-14_05,2024-02-14_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxlogscore=999 adultscore=0 suspectscore=0 mlxscore=0 phishscore=0 bulkscore=0 malwarescore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2402140098 X-Proofpoint-ORIG-GUID: H0f9qVX8WpN2k86BmatKwxOeQF43BlWH X-Proofpoint-GUID: H0f9qVX8WpN2k86BmatKwxOeQF43BlWH 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=205.220.165.32; envelope-from=si-wei.liu@oracle.com; helo=mx0a-00069f02.pphosted.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-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: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @oracle.com) X-ZM-MESSAGEID: 1707914565325100001 Previous commits had it removed. Now adding it back because this function will be needed by future patches. Reviewed-by: Eugenio P=C3=A9rez Signed-off-by: Si-Wei Liu --- net/vhost-vdpa.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index 46e350a..4479ffa 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -280,6 +280,16 @@ static ssize_t vhost_vdpa_receive(NetClientState *nc, = const uint8_t *buf, return size; } =20 + +/** From any vdpa net client, get the netclient of the first queue pair */ +static VhostVDPAState *vhost_vdpa_net_first_nc_vdpa(VhostVDPAState *s) +{ + NICState *nic =3D qemu_get_nic(s->nc.peer); + NetClientState *nc0 =3D qemu_get_peer(nic->ncs, 0); + + return DO_UPCAST(VhostVDPAState, nc, nc0); +} + static void vhost_vdpa_net_log_global_enable(VhostVDPAState *s, bool enabl= e) { struct vhost_vdpa *v =3D &s->vhost_vdpa; @@ -492,7 +502,7 @@ dma_map_err: =20 static int vhost_vdpa_net_cvq_start(NetClientState *nc) { - VhostVDPAState *s; + VhostVDPAState *s, *s0; struct vhost_vdpa *v; int64_t cvq_group; int r; @@ -503,7 +513,8 @@ static int vhost_vdpa_net_cvq_start(NetClientState *nc) s =3D DO_UPCAST(VhostVDPAState, nc, nc); v =3D &s->vhost_vdpa; =20 - v->shadow_vqs_enabled =3D v->shared->shadow_data; + s0 =3D vhost_vdpa_net_first_nc_vdpa(s); + v->shadow_vqs_enabled =3D s0->vhost_vdpa.shadow_vqs_enabled; s->vhost_vdpa.address_space_id =3D VHOST_VDPA_GUEST_PA_ASID; =20 if (v->shared->shadow_data) { --=20 1.8.3.1 From nobody Tue May 14 00:43:09 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=oracle.com ARC-Seal: i=1; a=rsa-sha256; t=1707914390; cv=none; d=zohomail.com; s=zohoarc; b=mjO4grMxLqUay5p8VAnAPc1T+ukmJRB3oPFaqQpKcy3HWPk9KenbKxSpZC7Tb76cts4KLYetoJs7ffNW/SAnOeNe4hsdfdILYgtQMJhrCUGNKIUVQ2zd6ItUg0ahP23O2c0NTh6uO//xSKyiYsE0DNERcChnsqC3rSHuMlKGA38= ARC-Message-Signature: i=1; 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Wed, 14 Feb 2024 12:39:03 GMT Received: from ban25x6uut24.us.oracle.com (ban25x6uut24.us.oracle.com [10.153.73.24]) by phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTP id 3w6apbnn3q-3; Wed, 14 Feb 2024 12:39:02 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type : content-transfer-encoding; s=corp-2023-11-20; bh=STWJ7ECmBZeZOtWDj6UGZDwt9pyMiy2oR85yJjqbplw=; b=DEObugQaCXsthHEhim4jK2NyNqHbvqMGrRJFJtF6KkiHzXuh9KHPpdhVxuN++pD14LQD 22ID19PHNsyPvyK1ZESRJ7htxIYgZiszxC+hqQWR41ZYvoVqbOllZjxvpfMS2i6gQTLp 7BtlecXuqhSOcrxXihS3TDcaCgOIo6ldqdtVMdqls49kMIiUQRyluY6RljazH/DHz+Ax C44xg5NxawGF7XqZ+Yg+iZOnsjjU7zy1OTrXD73zBRkyFFH2OlkDnx4IRAku7xAmd7BM lDMbJ5j3hv9NCAZtfpwqzNYFtSTCKhsgrl+Gyg5g9GVY/uy7bEenlUmwilFL2vR+5kbk WQ== From: Si-Wei Liu To: eperezma@redhat.com, jasowang@redhat.com, mst@redhat.com, dtatulea@nvidia.com, leiyang@redhat.com, yin31149@gmail.com Cc: qemu-devel@nongnu.org Subject: [PATCH 02/12] vdpa: no repeat setting shadow_data Date: Wed, 14 Feb 2024 03:27:52 -0800 Message-Id: <1707910082-10243-3-git-send-email-si-wei.liu@oracle.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1707910082-10243-1-git-send-email-si-wei.liu@oracle.com> References: <1707910082-10243-1-git-send-email-si-wei.liu@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-02-14_05,2024-02-14_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxlogscore=999 adultscore=0 suspectscore=0 mlxscore=0 phishscore=0 bulkscore=0 malwarescore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2402140098 X-Proofpoint-ORIG-GUID: _GafGPdEB4lUmlzG6leXM0X_4_Ye5L2F X-Proofpoint-GUID: _GafGPdEB4lUmlzG6leXM0X_4_Ye5L2F 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=205.220.165.32; envelope-from=si-wei.liu@oracle.com; helo=mx0a-00069f02.pphosted.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-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: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @oracle.com) X-ZM-MESSAGEID: 1707914391209100002 Since shadow_data is now shared in the parent data struct, it just needs to be set only once by the first vq. This change will make shadow_data independent of svq enabled state, which can be optionally turned off when SVQ descritors and device driver areas are all isolated to a separate address space. Reviewed-by: Eugenio P=C3=A9rez Acked-by: Jason Wang Signed-off-by: Si-Wei Liu --- net/vhost-vdpa.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index 4479ffa..06c83b4 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -354,13 +354,12 @@ static int vhost_vdpa_net_data_start(NetClientState *= nc) if (s->always_svq || migration_is_setup_or_active(migrate_get_current()->state)) { v->shadow_vqs_enabled =3D true; - v->shared->shadow_data =3D true; } else { v->shadow_vqs_enabled =3D false; - v->shared->shadow_data =3D false; } =20 if (v->index =3D=3D 0) { + v->shared->shadow_data =3D v->shadow_vqs_enabled; vhost_vdpa_net_data_start_first(s); return 0; } --=20 1.8.3.1 From nobody Tue May 14 00:43:09 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; 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b=TQbQauxQ6YHdY78YZsXlR4aEyFXf49xcR7UxKZoiWAWkIDado8FaTRFvxDLKT0jnUqum q3+rnCL4+3P/jWJHnClwoOTBw6IWzowq2hA7cfQAXD+KOSbpfzPMXoCH8cqJg/n0v27E nRZyK9E1c6l4IMKtB7i6bwIc+AhNZtn73T2DI2G2qLi7nJbLJt0jq1HsA6KAfClnWeOB d1Qo7rc9g6W3rxhhIVyt7U0WTuFQgWkS26huNF94iVDcKGC16QNUJzwaGgrw0rPo3ZZ1 p/wn1H95b09PjlF1qO+0PHbFAW75YM5VrGpuqCdMUuPpTzeTeg1l575qANH/w/LgmkdL wA== From: Si-Wei Liu To: eperezma@redhat.com, jasowang@redhat.com, mst@redhat.com, dtatulea@nvidia.com, leiyang@redhat.com, yin31149@gmail.com Cc: qemu-devel@nongnu.org Subject: [PATCH 03/12] vdpa: factor out vhost_vdpa_last_dev Date: Wed, 14 Feb 2024 03:27:53 -0800 Message-Id: <1707910082-10243-4-git-send-email-si-wei.liu@oracle.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1707910082-10243-1-git-send-email-si-wei.liu@oracle.com> References: <1707910082-10243-1-git-send-email-si-wei.liu@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-02-14_05,2024-02-14_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxlogscore=999 adultscore=0 suspectscore=0 mlxscore=0 phishscore=0 bulkscore=0 malwarescore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2402140098 X-Proofpoint-ORIG-GUID: Y0Kldbkss8FoBFo2idCgpbRCEQT4-WyS X-Proofpoint-GUID: Y0Kldbkss8FoBFo2idCgpbRCEQT4-WyS Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; 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Reviewed-by: Eugenio P=C3=A9rez Acked-by: Jason Wang Signed-off-by: Si-Wei Liu --- hw/virtio/vhost-vdpa.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index f7162da..1d3154a 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -551,6 +551,11 @@ static bool vhost_vdpa_first_dev(struct vhost_dev *dev) return v->index =3D=3D 0; } =20 +static bool vhost_vdpa_last_dev(struct vhost_dev *dev) +{ + return dev->vq_index + dev->nvqs =3D=3D dev->vq_index_end; +} + static int vhost_vdpa_get_dev_features(struct vhost_dev *dev, uint64_t *features) { @@ -1317,7 +1322,7 @@ static int vhost_vdpa_dev_start(struct vhost_dev *dev= , bool started) vhost_vdpa_host_notifiers_uninit(dev, dev->nvqs); } =20 - if (dev->vq_index + dev->nvqs !=3D dev->vq_index_end) { + if (!vhost_vdpa_last_dev(dev)) { return 0; } =20 @@ -1347,7 +1352,7 @@ static void vhost_vdpa_reset_status(struct vhost_dev = *dev) { struct vhost_vdpa *v =3D dev->opaque; =20 - if (dev->vq_index + dev->nvqs !=3D dev->vq_index_end) { + if (!vhost_vdpa_last_dev(dev)) { return; } =20 --=20 1.8.3.1 From nobody Tue May 14 00:43:09 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=oracle.com ARC-Seal: i=1; a=rsa-sha256; t=1707914409; cv=none; d=zohomail.com; s=zohoarc; b=k8AgQHE+WV1aMXInS5NDQtNc0ZXCGadjcrX0ijNO1H48YObY39ZI5PtcoymN8C4pBCdM+YL3JXrugBvB2is1F6Fgx9PrjAvgWYPwcwAy945lgQzQcsaBHTkxvD8970lWFgv/tp16sdTbvVR12UT7w/4d54dYvs/GvnpQQ491IK4= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1707914409; h=Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=fNUPkUaoC1M3EfiBrG5gFlCzG2ZQFXeSo/ZczHr6Nm0=; 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charset="utf-8" Introduce new API. No functional change on existing API. Acked-by: Jason Wang Signed-off-by: Si-Wei Liu Reviewed-by: Eugenio P=C3=A9rez --- net/vhost-vdpa.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index 06c83b4..4168cad 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -281,13 +281,18 @@ static ssize_t vhost_vdpa_receive(NetClientState *nc,= const uint8_t *buf, } =20 =20 -/** From any vdpa net client, get the netclient of the first queue pair */ -static VhostVDPAState *vhost_vdpa_net_first_nc_vdpa(VhostVDPAState *s) +/** From any vdpa net client, get the netclient of the i-th queue pair */ +static VhostVDPAState *vhost_vdpa_net_get_nc_vdpa(VhostVDPAState *s, int i) { NICState *nic =3D qemu_get_nic(s->nc.peer); - NetClientState *nc0 =3D qemu_get_peer(nic->ncs, 0); + NetClientState *nc_i =3D qemu_get_peer(nic->ncs, i); + + return DO_UPCAST(VhostVDPAState, nc, nc_i); +} =20 - return DO_UPCAST(VhostVDPAState, nc, nc0); +static VhostVDPAState *vhost_vdpa_net_first_nc_vdpa(VhostVDPAState *s) +{ + return vhost_vdpa_net_get_nc_vdpa(s, 0); 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Reviewed-by: Eugenio P=C3=A9rez Signed-off-by: Si-Wei Liu --- net/trace-events | 3 +++ net/vhost-vdpa.c | 3 +++ 2 files changed, 6 insertions(+) diff --git a/net/trace-events b/net/trace-events index 823a071..aab666a 100644 --- a/net/trace-events +++ b/net/trace-events @@ -23,3 +23,6 @@ colo_compare_tcp_info(const char *pkt, uint32_t seq, uint= 32_t ack, int hdlen, in # filter-rewriter.c colo_filter_rewriter_pkt_info(const char *func, const char *src, const cha= r *dst, uint32_t seq, uint32_t ack, uint32_t flag) "%s: src/dst: %s/%s p: s= eq/ack=3D%u/%u flags=3D0x%x" colo_filter_rewriter_conn_offset(uint32_t offset) ": offset=3D%u" + +# vhost-vdpa.c +vhost_vdpa_set_address_space_id(void *v, unsigned vq_group, unsigned asid_= num) "vhost_vdpa: %p vq_group: %u asid: %u" diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index 4168cad..48a5608 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -29,6 +29,7 @@ #include "migration/migration.h" #include "migration/misc.h" #include "hw/virtio/vhost.h" +#include "trace.h" =20 /* Todo:need to add the multiqueue support here */ typedef struct VhostVDPAState { @@ -440,6 +441,8 @@ static int vhost_vdpa_set_address_space_id(struct vhost= _vdpa *v, }; int r; =20 + trace_vhost_vdpa_set_address_space_id(v, vq_group, asid_num); + r =3D ioctl(v->shared->device_fd, VHOST_VDPA_SET_GROUP_ASID, &asid); if (unlikely(r < 0)) { error_report("Can't set vq group %u asid %u, errno=3D%d (%s)", --=20 1.8.3.1 From nobody Tue May 14 00:43:09 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=oracle.com ARC-Seal: i=1; a=rsa-sha256; t=1707914483; cv=none; d=zohomail.com; s=zohoarc; b=bJcGg0jrh8XrtKYLVJJQAr5eZqkSwplKrmAQ9XxPxK4zH10bc52dmbPoW7X5NR+n8jtGDY2Bm/G5OphDrFLd1kMywEUxV/a4aKtpdwQaQZwZHfD+nGPRznwtiYlKeh/dUDidmHR9uQgSDhNNOl2PTczbIIfKteOsulHVXQNn9Ag= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1707914483; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; 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Reviewed-by: Eugenio P=C3=A9rez Acked-by: Jason Wang Signed-off-by: Si-Wei Liu --- hw/virtio/trace-events | 2 +- hw/virtio/vhost-vdpa.c | 3 ++- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/hw/virtio/trace-events b/hw/virtio/trace-events index 77905d1..28d6d78 100644 --- a/hw/virtio/trace-events +++ b/hw/virtio/trace-events @@ -58,7 +58,7 @@ vhost_vdpa_set_log_base(void *dev, uint64_t base, unsigne= d long long size, int r vhost_vdpa_set_vring_addr(void *dev, unsigned int index, unsigned int flag= s, uint64_t desc_user_addr, uint64_t used_user_addr, uint64_t avail_user_ad= dr, uint64_t log_guest_addr) "dev: %p index: %u flags: 0x%x desc_user_addr:= 0x%"PRIx64" used_user_addr: 0x%"PRIx64" avail_user_addr: 0x%"PRIx64" log_g= uest_addr: 0x%"PRIx64 vhost_vdpa_set_vring_num(void *dev, unsigned int index, unsigned int num) = "dev: %p index: %u num: %u" vhost_vdpa_set_vring_base(void *dev, unsigned int index, unsigned int num)= "dev: %p index: %u num: %u" -vhost_vdpa_get_vring_base(void *dev, unsigned int index, unsigned int num)= "dev: %p index: %u num: %u" +vhost_vdpa_get_vring_base(void *dev, unsigned int index, unsigned int num,= bool svq) "dev: %p index: %u num: %u svq: %d" vhost_vdpa_set_vring_kick(void *dev, unsigned int index, int fd) "dev: %p = index: %u fd: %d" vhost_vdpa_set_vring_call(void *dev, unsigned int index, int fd) "dev: %p = index: %u fd: %d" vhost_vdpa_get_features(void *dev, uint64_t features) "dev: %p features: 0= x%"PRIx64 diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 1d3154a..0de7bdf 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -1424,6 +1424,7 @@ static int vhost_vdpa_get_vring_base(struct vhost_dev= *dev, =20 if (v->shadow_vqs_enabled) { ring->num =3D virtio_queue_get_last_avail_idx(dev->vdev, ring->ind= ex); + trace_vhost_vdpa_get_vring_base(dev, ring->index, ring->num, true); return 0; } =20 @@ -1436,7 +1437,7 @@ static int vhost_vdpa_get_vring_base(struct vhost_dev= *dev, } =20 ret =3D vhost_vdpa_call(dev, VHOST_GET_VRING_BASE, ring); - trace_vhost_vdpa_get_vring_base(dev, ring->index, ring->num); + trace_vhost_vdpa_get_vring_base(dev, ring->index, ring->num, false); return ret; } =20 --=20 1.8.3.1 From nobody Tue May 14 00:43:09 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=oracle.com ARC-Seal: i=1; a=rsa-sha256; t=1707914527; cv=none; d=zohomail.com; s=zohoarc; b=gYBXS93ThInc5Y4K7fq+X+hb3wKqVeZ8AJuUs08fm/df8QJyKeKLXkvkvtjwQb4hhaY1GM6PflrIic2PWITvqHLPJJFt0qHSVVXSFtSbaKP+jc1zjm85Axcrhnm+KHmYmy02SqwBUI2YMsME7t7C/dFUqFNZiHp2VUjHWjjC6NE= ARC-Message-Signature: i=1; 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Wed, 14 Feb 2024 12:39:09 GMT Received: from ban25x6uut24.us.oracle.com (ban25x6uut24.us.oracle.com [10.153.73.24]) by phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTP id 3w6apbnn3q-8; Wed, 14 Feb 2024 12:39:09 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type : content-transfer-encoding; s=corp-2023-11-20; bh=D1+WcSGEoC3bI1zoR2QKwGGpNmJHUDNN467lbXVCSGM=; b=JYA32NxKBYbsSmo6TnB9+3OA5mLxbfgy1dvt3GzcnpyQ0IzEh9aPU+2LjMlHcm/Efpyl iZAMQai1kgP7urFy6WyomRbMHRHUpUt4g10nySkCghgkzGIDp9bGmaz5a8zfcVcemktu r5Mr1blHdWJa7y+q2VwyT9XlbMCu3rHFdirEramVtyb+8FC5Xuwq/5r4zyy6ElS5Dz+4 3h+ygzuxGtQ1SpQRkm1gcGfi62wneOMmEGF0cWgIYCYGPiHcl7KyKsnNAgUnhFvie0aJ XpsBAxlpc8+GYE/qXL6jr4aX+n/Je1DLyUbqPe+XwAh3Wk5nMKrr5UoUFNFqQknjQVdo Kg== From: Si-Wei Liu To: eperezma@redhat.com, jasowang@redhat.com, mst@redhat.com, dtatulea@nvidia.com, leiyang@redhat.com, yin31149@gmail.com Cc: qemu-devel@nongnu.org Subject: [PATCH 07/12] vdpa: add vhost_vdpa_set_dev_vring_base trace for svq mode Date: Wed, 14 Feb 2024 03:27:57 -0800 Message-Id: <1707910082-10243-8-git-send-email-si-wei.liu@oracle.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1707910082-10243-1-git-send-email-si-wei.liu@oracle.com> References: <1707910082-10243-1-git-send-email-si-wei.liu@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-02-14_05,2024-02-14_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxlogscore=999 adultscore=0 suspectscore=0 mlxscore=0 phishscore=0 bulkscore=0 malwarescore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2402140098 X-Proofpoint-GUID: KuRMhGS3BFAHqfXYYdkH9AyXNXwtkeH3 X-Proofpoint-ORIG-GUID: KuRMhGS3BFAHqfXYYdkH9AyXNXwtkeH3 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=205.220.177.32; envelope-from=si-wei.liu@oracle.com; helo=mx0b-00069f02.pphosted.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_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-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: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @oracle.com) X-ZM-MESSAGEID: 1707914529242100005 For better debuggability and observability. Reviewed-by: Eugenio P=C3=A9rez Acked-by: Jason Wang Signed-off-by: Si-Wei Liu --- hw/virtio/trace-events | 2 +- hw/virtio/vhost-vdpa.c | 5 ++++- 2 files changed, 5 insertions(+), 2 deletions(-) diff --git a/hw/virtio/trace-events b/hw/virtio/trace-events index 28d6d78..20577aa 100644 --- a/hw/virtio/trace-events +++ b/hw/virtio/trace-events @@ -57,7 +57,7 @@ vhost_vdpa_dev_start(void *dev, bool started) "dev: %p st= arted: %d" vhost_vdpa_set_log_base(void *dev, uint64_t base, unsigned long long size,= int refcnt, int fd, void *log) "dev: %p base: 0x%"PRIx64" size: %llu refcn= t: %d fd: %d log: %p" vhost_vdpa_set_vring_addr(void *dev, unsigned int index, unsigned int flag= s, uint64_t desc_user_addr, uint64_t used_user_addr, uint64_t avail_user_ad= dr, uint64_t log_guest_addr) "dev: %p index: %u flags: 0x%x desc_user_addr:= 0x%"PRIx64" used_user_addr: 0x%"PRIx64" avail_user_addr: 0x%"PRIx64" log_g= uest_addr: 0x%"PRIx64 vhost_vdpa_set_vring_num(void *dev, unsigned int index, unsigned int num) = "dev: %p index: %u num: %u" -vhost_vdpa_set_vring_base(void *dev, unsigned int index, unsigned int num)= "dev: %p index: %u num: %u" +vhost_vdpa_set_dev_vring_base(void *dev, unsigned int index, unsigned int = num, bool svq) "dev: %p index: %u num: %u svq: %d" vhost_vdpa_get_vring_base(void *dev, unsigned int index, unsigned int num,= bool svq) "dev: %p index: %u num: %u svq: %d" vhost_vdpa_set_vring_kick(void *dev, unsigned int index, int fd) "dev: %p = index: %u fd: %d" vhost_vdpa_set_vring_call(void *dev, unsigned int index, int fd) "dev: %p = index: %u fd: %d" diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 0de7bdf..004110f 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -972,7 +972,10 @@ static int vhost_vdpa_get_config(struct vhost_dev *dev= , uint8_t *config, static int vhost_vdpa_set_dev_vring_base(struct vhost_dev *dev, struct vhost_vring_state *ring) { - trace_vhost_vdpa_set_vring_base(dev, ring->index, ring->num); + struct vhost_vdpa *v =3D dev->opaque; + + trace_vhost_vdpa_set_dev_vring_base(dev, ring->index, ring->num, + v->shadow_vqs_enabled); return vhost_vdpa_call(dev, VHOST_SET_VRING_BASE, ring); } =20 --=20 1.8.3.1 From nobody Tue May 14 00:43:09 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=oracle.com ARC-Seal: i=1; a=rsa-sha256; t=1707914522; cv=none; d=zohomail.com; s=zohoarc; b=fe+FIjvzQnyZCVq34yMnIlUSqdvwQL0m8wblzFb4bXCMBoi5S6sMjaXaQh1UFoto73P4Y763RBM4+jhB3suPxw/hqlXOPqbrMNoKxKFX6nc48UTEICMkN3Tx/zB71ZokRFyfiDNlsviGXdlcbY8julwjVYUqp+U4Wb7+RHkiGSI= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1707914522; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; 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charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-02-14_05,2024-02-14_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxlogscore=999 adultscore=0 suspectscore=0 mlxscore=0 phishscore=0 bulkscore=0 malwarescore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2402140098 X-Proofpoint-GUID: -Q6c3R_7N9i7KacBjFSTLfxBFxQ8F95H X-Proofpoint-ORIG-GUID: -Q6c3R_7N9i7KacBjFSTLfxBFxQ8F95H 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=205.220.177.32; envelope-from=si-wei.liu@oracle.com; helo=mx0b-00069f02.pphosted.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_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-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: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @oracle.com) X-ZM-MESSAGEID: 1707914523361100004 For better debuggability and observability. Reviewed-by: Eugenio P=C3=A9rez Signed-off-by: Si-Wei Liu --- net/trace-events | 2 ++ net/vhost-vdpa.c | 2 ++ 2 files changed, 4 insertions(+) diff --git a/net/trace-events b/net/trace-events index aab666a..88f56f2 100644 --- a/net/trace-events +++ b/net/trace-events @@ -26,3 +26,5 @@ colo_filter_rewriter_conn_offset(uint32_t offset) ": offs= et=3D%u" =20 # vhost-vdpa.c vhost_vdpa_set_address_space_id(void *v, unsigned vq_group, unsigned asid_= num) "vhost_vdpa: %p vq_group: %u asid: %u" +vhost_vdpa_net_load_cmd(void *s, uint8_t class, uint8_t cmd, int data_num,= int data_size) "vdpa state: %p class: %u cmd: %u sg_num: %d size: %d" +vhost_vdpa_net_load_cmd_retval(void *s, uint8_t class, uint8_t cmd, int r)= "vdpa state: %p class: %u cmd: %u retval: %d" diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index 48a5608..6ee438f 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -677,6 +677,7 @@ static ssize_t vhost_vdpa_net_load_cmd(VhostVDPAState *= s, =20 assert(data_size < vhost_vdpa_net_cvq_cmd_page_len() - sizeof(ctrl)); cmd_size =3D sizeof(ctrl) + data_size; + trace_vhost_vdpa_net_load_cmd(s, class, cmd, data_num, data_size); if (vhost_svq_available_slots(svq) < 2 || iov_size(out_cursor, 1) < cmd_size) { /* @@ -708,6 +709,7 @@ static ssize_t vhost_vdpa_net_load_cmd(VhostVDPAState *= s, =20 r =3D vhost_vdpa_net_cvq_add(s, &out, 1, &in, 1); if (unlikely(r < 0)) { + trace_vhost_vdpa_net_load_cmd_retval(s, class, cmd, r); return r; } =20 --=20 1.8.3.1 From nobody Tue May 14 00:43:09 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=oracle.com ARC-Seal: i=1; a=rsa-sha256; t=1707914524; cv=none; d=zohomail.com; s=zohoarc; b=XcpKPNx142/btipKvyJUv4VB4x0YN1rUyG2UHUETGyowOwuvCjzIzmSO68BXek0IdDjxA/+MWF8Tg1ODUocDS1bQ6QHD2rECcxEsW2KBczizKDvl9myhQZDwhq8S/MyAfYW890KhC5GlhvSD4WQUzKGQiWjL9ooHPdJ7N0V0vIs= ARC-Message-Signature: i=1; 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Reviewed-by: Eugenio P=C3=A9rez Signed-off-by: Si-Wei Liu --- net/trace-events | 1 + net/vhost-vdpa.c | 2 ++ 2 files changed, 3 insertions(+) diff --git a/net/trace-events b/net/trace-events index 88f56f2..cda960f 100644 --- a/net/trace-events +++ b/net/trace-events @@ -28,3 +28,4 @@ colo_filter_rewriter_conn_offset(uint32_t offset) ": offs= et=3D%u" vhost_vdpa_set_address_space_id(void *v, unsigned vq_group, unsigned asid_= num) "vhost_vdpa: %p vq_group: %u asid: %u" vhost_vdpa_net_load_cmd(void *s, uint8_t class, uint8_t cmd, int data_num,= int data_size) "vdpa state: %p class: %u cmd: %u sg_num: %d size: %d" vhost_vdpa_net_load_cmd_retval(void *s, uint8_t class, uint8_t cmd, int r)= "vdpa state: %p class: %u cmd: %u retval: %d" +vhost_vdpa_net_load_mq(void *s, int ncurqps) "vdpa state: %p current_qpair= s: %d" diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index 6ee438f..9f25221 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -901,6 +901,8 @@ static int vhost_vdpa_net_load_mq(VhostVDPAState *s, return 0; } =20 + trace_vhost_vdpa_net_load_mq(s, n->curr_queue_pairs); + mq.virtqueue_pairs =3D cpu_to_le16(n->curr_queue_pairs); const struct iovec data =3D { .iov_base =3D &mq, --=20 1.8.3.1 From nobody Tue May 14 00:43:09 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=oracle.com ARC-Seal: i=1; a=rsa-sha256; t=1707914538; cv=none; d=zohomail.com; s=zohoarc; b=nH2xVrSlgk5EXoMNTZi7Vry+3mfm3dSKSN0XdUmJDcBHujJQP6nvHO3wFh4sewBj2KzsP0oqge7lyQAeJgh3I9RR3DHjUdQQ//SUBpRUrHTRXsoHj6snx7CxLc/GQhCfUXREbqhMpXTjm/Iev4mwn1BxZiQF+o1zBGxEsJNTaUM= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1707914538; h=Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; 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charset="utf-8" Will be used in following patches. DISABLING(-1) means SVQ is being switched off to passthrough mode. ENABLING(1) means passthrough VQs are being switched to SVQ. DONE(0) means SVQ switching is completed. Signed-off-by: Si-Wei Liu --- include/hw/virtio/vhost-vdpa.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h index ad754eb..449bf5c 100644 --- a/include/hw/virtio/vhost-vdpa.h +++ b/include/hw/virtio/vhost-vdpa.h @@ -30,6 +30,12 @@ typedef struct VhostVDPAHostNotifier { void *addr; } VhostVDPAHostNotifier; =20 +typedef enum SVQTransitionState { + SVQ_TSTATE_DISABLING =3D -1, + SVQ_TSTATE_DONE, + SVQ_TSTATE_ENABLING +} SVQTransitionState; + /* Info shared by all vhost_vdpa device models */ typedef struct vhost_vdpa_shared { int device_fd; @@ -67,6 +73,9 @@ typedef struct vhost_vdpa_shared { =20 /* Vdpa must send shadow addresses as IOTLB key for data queues, not G= PA */ bool shadow_data; + + /* SVQ switching is in progress, or already completed? */ + SVQTransitionState svq_switching; } VhostVDPAShared; =20 typedef struct vhost_vdpa { --=20 1.8.3.1 From nobody Tue May 14 00:43:09 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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charset="utf-8" svq_switching indicates the transitional state whether or not SVQ mode switching is in progress, and towards which direction. Add the neccessary state around where the switching would take place. Signed-off-by: Si-Wei Liu --- net/vhost-vdpa.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index 9f25221..96d95b9 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -317,6 +317,8 @@ static void vhost_vdpa_net_log_global_enable(VhostVDPAS= tate *s, bool enable) data_queue_pairs =3D n->multiqueue ? n->max_queue_pairs : 1; cvq =3D virtio_vdev_has_feature(vdev, VIRTIO_NET_F_CTRL_VQ) ? n->max_ncs - n->max_queue_pairs : 0; + v->shared->svq_switching =3D enable ? + SVQ_TSTATE_ENABLING : SVQ_TSTATE_DISABLING; /* * TODO: vhost_net_stop does suspend, get_base and reset. We can be sm= arter * in the future and resume the device if read-only operations between @@ -329,6 +331,7 @@ static void vhost_vdpa_net_log_global_enable(VhostVDPAS= tate *s, bool enable) if (unlikely(r < 0)) { error_report("unable to start vhost net: %s(%d)", g_strerror(-r), = -r); } + v->shared->svq_switching =3D SVQ_TSTATE_DONE; } =20 static void vdpa_net_migration_state_notifier(Notifier *notifier, void *da= ta) --=20 1.8.3.1 From nobody Tue May 14 00:43:09 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=oracle.com ARC-Seal: i=1; a=rsa-sha256; t=1707914459; cv=none; d=zohomail.com; s=zohoarc; b=S4km5LUINvyGifh9cggM/+SIS1xQfTJYjxfK+RxfFMh5Sl49nJ8bkyJ57v6iNrKLAfdsFdFWJZ5KaJGK7Ej28KX2Yv/7nuA7A7C6rrPTIDZyaTw6KMc9E+AowpOl/bWrSjdM4ZIpPbR5N4ZpmETh6zBsdyQ7psbBW2sy/UuyA04= ARC-Message-Signature: i=1; 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Wed, 14 Feb 2024 12:39:17 GMT Received: from ban25x6uut24.us.oracle.com (ban25x6uut24.us.oracle.com [10.153.73.24]) by phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTP id 3w6apbnn3q-13; Wed, 14 Feb 2024 12:39:17 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type : content-transfer-encoding; s=corp-2023-11-20; bh=MwyvA3gq7GPBR5S7Fs2XooWtR7OGtNIfR+fNtKH8n8U=; b=gb/xlPRaElYD7w5jXCUwzc8Xm+oXEE39rh9xvQNMEZ5PAOr0CdeTUCY4fzEwH4GU9Bib bcgbAT60vVRPnAXWnlh+2gA/OMLwPYr+VxrRF33TxacENh3Mqu4pgu+KbPUFfLlRNsCZ Ir4Bxp8NObpXlowS4sZ8Mnciale0P2IoHjxy0VvULc6kdLX35A6IPeInOX29FmZGOhcp JM8/zaeKLs49LAavTAVRk610ScHg/6uU4SoHPexZ1SOQR8GbwvogYqVWuLUmzQ4aD0Qm mPnlBu2gjFrDHj3ko2jCVn/yglmJOhewQnHlHzWxeaoxoTOciRCzMepftlxCsHduyFt+ KQ== From: Si-Wei Liu To: eperezma@redhat.com, jasowang@redhat.com, mst@redhat.com, dtatulea@nvidia.com, leiyang@redhat.com, yin31149@gmail.com Cc: qemu-devel@nongnu.org Subject: [PATCH 12/12] vdpa: fix network breakage after cancelling migration Date: Wed, 14 Feb 2024 03:28:02 -0800 Message-Id: <1707910082-10243-13-git-send-email-si-wei.liu@oracle.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1707910082-10243-1-git-send-email-si-wei.liu@oracle.com> References: <1707910082-10243-1-git-send-email-si-wei.liu@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-02-14_05,2024-02-14_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxlogscore=999 adultscore=0 suspectscore=0 mlxscore=0 phishscore=0 bulkscore=0 malwarescore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2402140098 X-Proofpoint-GUID: 7KPI141GI8qmONnyZoY-Wz-43a4XyM8V X-Proofpoint-ORIG-GUID: 7KPI141GI8qmONnyZoY-Wz-43a4XyM8V 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=205.220.177.32; envelope-from=si-wei.liu@oracle.com; helo=mx0b-00069f02.pphosted.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_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-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: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @oracle.com) X-ZM-MESSAGEID: 1707914461268100003 Fix an issue where cancellation of ongoing migration ends up with no network connectivity. When canceling migration, SVQ will be switched back to the passthrough mode, but the right call fd is not programed to the device and the svq's own call fd is still used. At the point of this transitioning period, the shadow_vqs_enabled hadn't been set back to false yet, causing the installation of call fd inadvertently bypassed. Fixes: a8ac88585da1 ("vhost: Add Shadow VirtQueue call forwarding capabilit= ies") Cc: Eugenio P=C3=A9rez Acked-by: Jason Wang Signed-off-by: Si-Wei Liu --- hw/virtio/vhost-vdpa.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 004110f..dfeca8b 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -1468,7 +1468,15 @@ static int vhost_vdpa_set_vring_call(struct vhost_de= v *dev, =20 /* Remember last call fd because we can switch to SVQ anytime. */ vhost_svq_set_svq_call_fd(svq, file->fd); - if (v->shadow_vqs_enabled) { + /* + * When SVQ is transitioning to off, shadow_vqs_enabled has + * not been set back to false yet, but the underlying call fd + * will have to switch back to the guest notifier to signal the + * passthrough virtqueues. In other situations, SVQ's own call + * fd shall be used to signal the device model. + */ + if (v->shadow_vqs_enabled && + v->shared->svq_switching !=3D SVQ_TSTATE_DISABLING) { return 0; } =20 --=20 1.8.3.1