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From 6282a83619f274ca45a52d61577c10a05a0714dc 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: Thu, 15 Dec 2022 12:31:43 +0100
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Subject: [PATCH 11/14] vdpa: add shadow_data to vhost_vdpa
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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: Eugenio Pérez <eperezma@redhat.com>
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RH-MergeRequest: 136: vDPA ASID support in Qemu
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RH-Bugzilla: 2104412
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RH-Acked-by: Laurent Vivier <lvivier@redhat.com>
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RH-Acked-by: Cindy Lu <lulu@redhat.com>
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RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
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RH-Commit: [11/13] 9d317add1318b555ba06e19e4c67849069e047b9 (eperezmartin/qemu-kvm)
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The memory listener that thells the device how to convert GPA to qemu's
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va is registered against CVQ vhost_vdpa. memory listener translations
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are always ASID 0, CVQ ones are ASID 1 if supported.
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Let's tell the listener if it needs to register them on iova tree or
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not.
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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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Message-Id: <20221215113144.322011-12-eperezma@redhat.com>
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Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
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Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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(cherry picked from commit 6188d78a19894ac8f2bf9484d48a5235a529d3b7)
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---
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hw/virtio/vhost-vdpa.c | 6 +++---
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include/hw/virtio/vhost-vdpa.h | 2 ++
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net/vhost-vdpa.c | 1 +
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3 files changed, 6 insertions(+), 3 deletions(-)
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diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c
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index 0ecf2bbaa0..dc3498e995 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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@@ -224,7 +224,7 @@ static void vhost_vdpa_listener_region_add(MemoryListener *listener,
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vaddr, section->readonly);
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llsize = int128_sub(llend, int128_make64(iova));
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- if (v->shadow_vqs_enabled) {
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+ if (v->shadow_data) {
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int r;
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mem_region.translated_addr = (hwaddr)(uintptr_t)vaddr,
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@@ -251,7 +251,7 @@ static void vhost_vdpa_listener_region_add(MemoryListener *listener,
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return;
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fail_map:
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- if (v->shadow_vqs_enabled) {
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+ if (v->shadow_data) {
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vhost_iova_tree_remove(v->iova_tree, mem_region);
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}
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@@ -296,7 +296,7 @@ static void vhost_vdpa_listener_region_del(MemoryListener *listener,
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llsize = int128_sub(llend, int128_make64(iova));
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- if (v->shadow_vqs_enabled) {
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+ if (v->shadow_data) {
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const DMAMap *result;
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const void *vaddr = memory_region_get_ram_ptr(section->mr) +
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section->offset_within_region +
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diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h
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index e57dfa1fd1..45b969a311 100644
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--- a/include/hw/virtio/vhost-vdpa.h
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+++ b/include/hw/virtio/vhost-vdpa.h
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@@ -40,6 +40,8 @@ typedef struct vhost_vdpa {
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struct vhost_vdpa_iova_range iova_range;
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uint64_t acked_features;
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bool shadow_vqs_enabled;
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+ /* Vdpa must send shadow addresses as IOTLB key for data queues, not GPA */
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+ bool shadow_data;
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/* IOVA mapping used by the Shadow Virtqueue */
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VhostIOVATree *iova_tree;
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GPtrArray *shadow_vqs;
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diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c
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index 1757f1d028..eea7a0df12 100644
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--- a/net/vhost-vdpa.c
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+++ b/net/vhost-vdpa.c
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@@ -581,6 +581,7 @@ static NetClientState *net_vhost_vdpa_init(NetClientState *peer,
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s->always_svq = svq;
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s->vhost_vdpa.shadow_vqs_enabled = svq;
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s->vhost_vdpa.iova_range = iova_range;
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+ s->vhost_vdpa.shadow_data = svq;
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s->vhost_vdpa.iova_tree = iova_tree;
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if (!is_datapath) {
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s->cvq_cmd_out_buffer = qemu_memalign(qemu_real_host_page_size(),
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--
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2.31.1
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