From 51c1e9cf1612727ec4c6e795576ae8fa0c0b2d4c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= Date: Tue, 23 Aug 2022 20:20:05 +0200 Subject: [PATCH 07/23] vdpa: Remove SVQ vring from iova_tree at shutdown MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit RH-Author: Eugenio Pérez RH-MergeRequest: 116: vdpa: Restore device state on destination RH-Bugzilla: 2114060 RH-Acked-by: Cindy Lu RH-Acked-by: Miroslav Rezanina RH-Commit: [6/21] f72e67b9c90103151cbf86bff53e8f14b30f0e5b (eperezmartin/qemu-kvm) Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2114060 Upstream status: git@github.com:jasowang/qemu.git net-next Although the device will be reset before usage, the right thing to do is to clean it. Reported-by: Lei Yang Fixes: 34e3c94eda ("vdpa: Add custom IOTLB translations to SVQ") Signed-off-by: Eugenio Pérez Signed-off-by: Jason Wang (cherry picked from commit 0c45fa6c420ec3a1dd9ea9c40fa11bd943bb3be9) --- hw/virtio/vhost-vdpa.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 39aa70f52d..e5c264fb29 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -896,6 +896,12 @@ static bool vhost_vdpa_svq_unmap_ring(struct vhost_vdpa *v, size = ROUND_UP(result->size, qemu_real_host_page_size); r = vhost_vdpa_dma_unmap(v, result->iova, size); + if (unlikely(r < 0)) { + error_report("Unable to unmap SVQ vring: %s (%d)", g_strerror(-r), -r); + return false; + } + + vhost_iova_tree_remove(v->iova_tree, *result); return r == 0; } -- 2.31.1