183 lines
6.8 KiB
Diff
183 lines
6.8 KiB
Diff
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From 3320d1883222bc551cf8ffd048882be4a97e872f 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 20:20:04 +0200
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Subject: [PATCH 03/29] util: accept iova_tree_remove_parameter by value
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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: [3/25] 98190376f758aed31bc31ce3e478438787eb357c (redhat/centos-stream/src/qemu-kvm)
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It's convenient to call iova_tree_remove from a map returned from
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iova_tree_find or iova_tree_find_iova. With the current code this is not
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possible, since we will free it, and then we will try to search for it
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again.
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Fix it making accepting the map by value, forcing a copy of the
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argument. Not applying a fixes tag, since there is no use like that at
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the moment.
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Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
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Signed-off-by: Jason Wang <jasowang@redhat.com>
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(cherry picked from commit 69292a8e40f4dae8af5f04724e06392cdf03c09e)
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Signed-off-by: Laurent Vivier <lvivier@redhat.com>
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---
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hw/i386/intel_iommu.c | 6 +++---
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hw/virtio/vhost-iova-tree.c | 2 +-
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hw/virtio/vhost-iova-tree.h | 2 +-
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hw/virtio/vhost-vdpa.c | 6 +++---
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include/qemu/iova-tree.h | 2 +-
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net/vhost-vdpa.c | 4 ++--
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util/iova-tree.c | 4 ++--
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7 files changed, 13 insertions(+), 13 deletions(-)
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diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
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index 2162394e08..05d53a1aa9 100644
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--- a/hw/i386/intel_iommu.c
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+++ b/hw/i386/intel_iommu.c
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@@ -1187,7 +1187,7 @@ static int vtd_page_walk_one(IOMMUTLBEvent *event, vtd_page_walk_info *info)
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return ret;
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}
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/* Drop any existing mapping */
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- iova_tree_remove(as->iova_tree, &target);
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+ iova_tree_remove(as->iova_tree, target);
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/* Recover the correct type */
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event->type = IOMMU_NOTIFIER_MAP;
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entry->perm = cache_perm;
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@@ -1200,7 +1200,7 @@ static int vtd_page_walk_one(IOMMUTLBEvent *event, vtd_page_walk_info *info)
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trace_vtd_page_walk_one_skip_unmap(entry->iova, entry->addr_mask);
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return 0;
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}
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- iova_tree_remove(as->iova_tree, &target);
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+ iova_tree_remove(as->iova_tree, target);
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}
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trace_vtd_page_walk_one(info->domain_id, entry->iova,
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@@ -3563,7 +3563,7 @@ static void vtd_address_space_unmap(VTDAddressSpace *as, IOMMUNotifier *n)
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map.iova = n->start;
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map.size = size;
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- iova_tree_remove(as->iova_tree, &map);
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+ iova_tree_remove(as->iova_tree, map);
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}
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static void vtd_address_space_unmap_all(IntelIOMMUState *s)
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diff --git a/hw/virtio/vhost-iova-tree.c b/hw/virtio/vhost-iova-tree.c
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index 67bf6d57ab..3d03395a77 100644
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--- a/hw/virtio/vhost-iova-tree.c
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+++ b/hw/virtio/vhost-iova-tree.c
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@@ -104,7 +104,7 @@ int vhost_iova_tree_map_alloc(VhostIOVATree *tree, DMAMap *map)
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* @iova_tree: The vhost iova tree
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* @map: The map to remove
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*/
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-void vhost_iova_tree_remove(VhostIOVATree *iova_tree, const DMAMap *map)
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+void vhost_iova_tree_remove(VhostIOVATree *iova_tree, DMAMap map)
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{
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iova_tree_remove(iova_tree->iova_taddr_map, map);
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}
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diff --git a/hw/virtio/vhost-iova-tree.h b/hw/virtio/vhost-iova-tree.h
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index 6a4f24e0f9..4adfd79ff0 100644
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--- a/hw/virtio/vhost-iova-tree.h
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+++ b/hw/virtio/vhost-iova-tree.h
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@@ -22,6 +22,6 @@ G_DEFINE_AUTOPTR_CLEANUP_FUNC(VhostIOVATree, vhost_iova_tree_delete);
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const DMAMap *vhost_iova_tree_find_iova(const VhostIOVATree *iova_tree,
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const DMAMap *map);
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int vhost_iova_tree_map_alloc(VhostIOVATree *iova_tree, DMAMap *map);
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-void vhost_iova_tree_remove(VhostIOVATree *iova_tree, const DMAMap *map);
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+void vhost_iova_tree_remove(VhostIOVATree *iova_tree, DMAMap map);
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#endif
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diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c
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index 7e28d2f674..87e0ad393f 100644
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--- a/hw/virtio/vhost-vdpa.c
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+++ b/hw/virtio/vhost-vdpa.c
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@@ -240,7 +240,7 @@ static void vhost_vdpa_listener_region_add(MemoryListener *listener,
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fail_map:
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if (v->shadow_vqs_enabled) {
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- vhost_iova_tree_remove(v->iova_tree, &mem_region);
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+ vhost_iova_tree_remove(v->iova_tree, mem_region);
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}
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fail:
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@@ -300,7 +300,7 @@ static void vhost_vdpa_listener_region_del(MemoryListener *listener,
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return;
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}
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iova = result->iova;
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- vhost_iova_tree_remove(v->iova_tree, result);
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+ vhost_iova_tree_remove(v->iova_tree, *result);
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}
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vhost_vdpa_iotlb_batch_begin_once(v);
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ret = vhost_vdpa_dma_unmap(v, iova, int128_get64(llsize));
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@@ -944,7 +944,7 @@ static bool vhost_vdpa_svq_map_ring(struct vhost_vdpa *v, DMAMap *needle,
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needle->perm == IOMMU_RO);
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if (unlikely(r != 0)) {
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error_setg_errno(errp, -r, "Cannot map region to device");
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- vhost_iova_tree_remove(v->iova_tree, needle);
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+ vhost_iova_tree_remove(v->iova_tree, *needle);
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}
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return r == 0;
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diff --git a/include/qemu/iova-tree.h b/include/qemu/iova-tree.h
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index 16bbfdf5f8..8528e5c98f 100644
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--- a/include/qemu/iova-tree.h
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+++ b/include/qemu/iova-tree.h
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@@ -73,7 +73,7 @@ int iova_tree_insert(IOVATree *tree, const DMAMap *map);
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* all the mappings that are included in the provided range will be
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* removed from the tree. Here map->translated_addr is meaningless.
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*/
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-void iova_tree_remove(IOVATree *tree, const DMAMap *map);
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+void iova_tree_remove(IOVATree *tree, DMAMap map);
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/**
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* iova_tree_find:
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diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c
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index 303447a68e..a49e7e649d 100644
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--- a/net/vhost-vdpa.c
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+++ b/net/vhost-vdpa.c
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@@ -244,7 +244,7 @@ static void vhost_vdpa_cvq_unmap_buf(struct vhost_vdpa *v, void *addr)
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error_report("Device cannot unmap: %s(%d)", g_strerror(r), r);
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}
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- vhost_iova_tree_remove(tree, map);
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+ vhost_iova_tree_remove(tree, *map);
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}
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static size_t vhost_vdpa_net_cvq_cmd_len(void)
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@@ -297,7 +297,7 @@ static bool vhost_vdpa_cvq_map_buf(struct vhost_vdpa *v,
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return true;
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dma_map_err:
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- vhost_iova_tree_remove(v->iova_tree, &map);
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+ vhost_iova_tree_remove(v->iova_tree, map);
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return false;
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}
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diff --git a/util/iova-tree.c b/util/iova-tree.c
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index fee530a579..536789797e 100644
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--- a/util/iova-tree.c
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+++ b/util/iova-tree.c
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@@ -164,11 +164,11 @@ void iova_tree_foreach(IOVATree *tree, iova_tree_iterator iterator)
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g_tree_foreach(tree->tree, iova_tree_traverse, iterator);
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}
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-void iova_tree_remove(IOVATree *tree, const DMAMap *map)
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+void iova_tree_remove(IOVATree *tree, DMAMap map)
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{
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const DMAMap *overlap;
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- while ((overlap = iova_tree_find(tree, map))) {
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+ while ((overlap = iova_tree_find(tree, &map))) {
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g_tree_remove(tree->tree, overlap);
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}
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}
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--
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2.31.1
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