19bc18cc9e
- kvm-vdpa-Skip-the-maps-not-in-the-iova-tree.patch [RHELX-57] - kvm-vdpa-do-not-save-failed-dma-maps-in-SVQ-iova-tree.patch [RHELX-57] - kvm-util-accept-iova_tree_remove_parameter-by-value.patch [RHELX-57] - kvm-vdpa-Remove-SVQ-vring-from-iova_tree-at-shutdown.patch [RHELX-57] - kvm-vdpa-Make-SVQ-vring-unmapping-return-void.patch [RHELX-57] - kvm-vhost-Always-store-new-kick-fd-on-vhost_svq_set_svq_.patch [RHELX-57] - kvm-vdpa-Use-ring-hwaddr-at-vhost_vdpa_svq_unmap_ring.patch [RHELX-57] - kvm-vhost-stop-transfer-elem-ownership-in-vhost_handle_g.patch [RHELX-57] - kvm-vhost-use-SVQ-element-ndescs-instead-of-opaque-data-.patch [RHELX-57] - kvm-vhost-Delete-useless-read-memory-barrier.patch [RHELX-57] - kvm-vhost-Do-not-depend-on-NULL-VirtQueueElement-on-vhos.patch [RHELX-57] - kvm-vhost_net-Add-NetClientInfo-start-callback.patch [RHELX-57] - kvm-vhost_net-Add-NetClientInfo-stop-callback.patch [RHELX-57] - kvm-vdpa-add-net_vhost_vdpa_cvq_info-NetClientInfo.patch [RHELX-57] - kvm-vdpa-Move-command-buffers-map-to-start-of-net-device.patch [RHELX-57] - kvm-vdpa-extract-vhost_vdpa_net_cvq_add-from-vhost_vdpa_.patch [RHELX-57] - kvm-vhost_net-add-NetClientState-load-callback.patch [RHELX-57] - kvm-vdpa-Add-virtio-net-mac-address-via-CVQ-at-start.patch [RHELX-57] - kvm-vdpa-Delete-CVQ-migration-blocker.patch [RHELX-57] - kvm-vdpa-Make-VhostVDPAState-cvq_cmd_in_buffer-control-a.patch [RHELX-57] - kvm-vdpa-extract-vhost_vdpa_net_load_mac-from-vhost_vdpa.patch [RHELX-57] - kvm-vdpa-Add-vhost_vdpa_net_load_mq.patch [RHELX-57] - kvm-vdpa-validate-MQ-CVQ-commands.patch [RHELX-57] - kvm-virtio-net-Update-virtio-net-curr_queue_pairs-in-vdp.patch [RHELX-57] - kvm-vdpa-Allow-MQ-feature-in-SVQ.patch [RHELX-57] - kvm-i386-reset-KVM-nested-state-upon-CPU-reset.patch [bz#2125281] - kvm-i386-do-kvm_put_msr_feature_control-first-thing-when.patch [bz#2125281] - kvm-Revert-Re-enable-capstone-internal-build.patch [bz#2127825] - kvm-spec-Use-capstone-package.patch [bz#2127825] - Resolves: RHELX-57 (vDPA SVQ Multiqueue support ) - Resolves: bz#2125281 ([RHEL9.1] Guests in VMX root operation fail to reboot with QEMU's 'system_reset' command [rhel-9.2.0]) - Resolves: bz#2127825 (Use capstone for qemu-kvm build)
56 lines
2.2 KiB
Diff
56 lines
2.2 KiB
Diff
From cf08dbe33683a66a79ec07b8450f9d3d27cff1c4 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= <eperezma@redhat.com>
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Date: Tue, 23 Aug 2022 20:30:27 +0200
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Subject: [PATCH 09/29] vhost: use SVQ element ndescs instead of opaque data
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for desc validation
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: Laurent Vivier <lvivier@redhat.com>
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RH-MergeRequest: 117: vDPA SVQ Multiqueue support
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RH-Jira: RHELX-57
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RH-Acked-by: Jason Wang <jasowang@redhat.com>
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RH-Acked-by: Cindy Lu <lulu@redhat.com>
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RH-Acked-by: Eugenio Pérez <eperezma@redhat.com>
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RH-Commit: [9/25] 071eb2a0db612d516d630a15a1f0fd908ed86fd3 (redhat/centos-stream/src/qemu-kvm)
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Since we're going to allow SVQ to add elements without the guest's
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knowledge and without its own VirtQueueElement, it's easier to check if
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an element is a valid head checking a different thing than the
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VirtQueueElement.
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Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
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Acked-by: Jason Wang <jasowang@redhat.com>
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Signed-off-by: Jason Wang <jasowang@redhat.com>
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(cherry picked from commit 86f5f2546f03a3dfde421c715187b262e29b2848)
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Signed-off-by: Laurent Vivier <lvivier@redhat.com>
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---
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hw/virtio/vhost-shadow-virtqueue.c | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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diff --git a/hw/virtio/vhost-shadow-virtqueue.c b/hw/virtio/vhost-shadow-virtqueue.c
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index a1261d4a0f..b35aeef4bd 100644
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--- a/hw/virtio/vhost-shadow-virtqueue.c
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+++ b/hw/virtio/vhost-shadow-virtqueue.c
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@@ -414,7 +414,7 @@ static VirtQueueElement *vhost_svq_get_buf(VhostShadowVirtqueue *svq,
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return NULL;
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}
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- if (unlikely(!svq->desc_state[used_elem.id].elem)) {
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+ if (unlikely(!svq->desc_state[used_elem.id].ndescs)) {
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qemu_log_mask(LOG_GUEST_ERROR,
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"Device %s says index %u is used, but it was not available",
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svq->vdev->name, used_elem.id);
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@@ -422,6 +422,7 @@ static VirtQueueElement *vhost_svq_get_buf(VhostShadowVirtqueue *svq,
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}
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num = svq->desc_state[used_elem.id].ndescs;
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+ svq->desc_state[used_elem.id].ndescs = 0;
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last_used_chain = vhost_svq_last_desc_of_chain(svq, num, used_elem.id);
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svq->desc_next[last_used_chain] = svq->free_head;
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svq->free_head = used_elem.id;
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--
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2.31.1
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