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Re: [PATCH] virtio-gpu: Resource UUID
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From: |
Antonio Caggiano |
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Subject: |
Re: [PATCH] virtio-gpu: Resource UUID |
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Date: |
Fri, 23 Sep 2022 15:47:30 +0200 |
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User-agent: |
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.3.0 |
Hi Marc-André,
On 23/09/2022 10:38, Marc-André Lureau wrote:
Hi
On Wed, Sep 21, 2022 at 1:24 PM Antonio Caggiano
<antonio.caggiano@collabora.com <mailto:antonio.caggiano@collabora.com>>
wrote:
Enable resource UUID feature and implement command resource assign UUID.
This is done by introducing a hash table to map resource IDs to their
UUIDs.
Signed-off-by: Antonio Caggiano <antonio.caggiano@collabora.com
<mailto:antonio.caggiano@collabora.com>>
---
hw/display/trace-events | 1 +
hw/display/virtio-gpu-base.c | 2 ++
hw/display/virtio-gpu-virgl.c | 11 ++++++++++
hw/display/virtio-gpu.c | 40 ++++++++++++++++++++++++++++++++++
include/hw/virtio/virtio-gpu.h | 4 ++++
5 files changed, 58 insertions(+)
diff --git a/hw/display/trace-events b/hw/display/trace-events
index 0c0ffcbe42..6632344322 100644
--- a/hw/display/trace-events
+++ b/hw/display/trace-events
@@ -41,6 +41,7 @@ virtio_gpu_cmd_res_create_blob(uint32_t res,
uint64_t size) "res 0x%x, size %" P
virtio_gpu_cmd_res_unref(uint32_t res) "res 0x%x"
virtio_gpu_cmd_res_back_attach(uint32_t res) "res 0x%x"
virtio_gpu_cmd_res_back_detach(uint32_t res) "res 0x%x"
+virtio_gpu_cmd_res_assign_uuid(uint32_t res) "res 0x%x"
virtio_gpu_cmd_res_xfer_toh_2d(uint32_t res) "res 0x%x"
virtio_gpu_cmd_res_xfer_toh_3d(uint32_t res) "res 0x%x"
virtio_gpu_cmd_res_xfer_fromh_3d(uint32_t res) "res 0x%x"
diff --git a/hw/display/virtio-gpu-base.c b/hw/display/virtio-gpu-base.c
index a29f191aa8..157d280b14 100644
--- a/hw/display/virtio-gpu-base.c
+++ b/hw/display/virtio-gpu-base.c
@@ -216,6 +216,8 @@ virtio_gpu_base_get_features(VirtIODevice *vdev,
uint64_t features,
features |= (1 << VIRTIO_GPU_F_RESOURCE_BLOB);
}
+ features |= (1 << VIRTIO_GPU_F_RESOURCE_UUID);
+
return features;
}
diff --git a/hw/display/virtio-gpu-virgl.c
b/hw/display/virtio-gpu-virgl.c
index 73cb92c8d5..7adb6be993 100644
--- a/hw/display/virtio-gpu-virgl.c
+++ b/hw/display/virtio-gpu-virgl.c
@@ -43,6 +43,10 @@ static void
virgl_cmd_create_resource_2d(VirtIOGPU *g,
args.nr_samples = 0;
args.flags = VIRTIO_GPU_RESOURCE_FLAG_Y_0_TOP;
virgl_renderer_resource_create(&args, NULL, 0);
+
+ struct virtio_gpu_simple_resource *res = g_new0(struct
virtio_gpu_simple_resource, 1);
+ res->resource_id = c2d.resource_id;
+ QTAILQ_INSERT_HEAD(&g->reslist, res, next);
}
static void virgl_cmd_create_resource_3d(VirtIOGPU *g,
@@ -67,6 +71,10 @@ static void
virgl_cmd_create_resource_3d(VirtIOGPU *g,
args.nr_samples = c3d.nr_samples;
args.flags = c3d.flags;
virgl_renderer_resource_create(&args, NULL, 0);
+
+ struct virtio_gpu_simple_resource *res = g_new0(struct
virtio_gpu_simple_resource, 1);
+ res->resource_id = c3d.resource_id;
+ QTAILQ_INSERT_HEAD(&g->reslist, res, next);
}
static void virgl_cmd_resource_unref(VirtIOGPU *g,
@@ -452,6 +460,9 @@ void virtio_gpu_virgl_process_cmd(VirtIOGPU *g,
/* TODO add security */
virgl_cmd_ctx_detach_resource(g, cmd);
break;
+ case VIRTIO_GPU_CMD_RESOURCE_ASSIGN_UUID:
+ virtio_gpu_resource_assign_uuid(g, cmd);
+ break;
case VIRTIO_GPU_CMD_GET_CAPSET_INFO:
virgl_cmd_get_capset_info(g, cmd);
break;
diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c
index 20cc703dcc..67e39fa839 100644
--- a/hw/display/virtio-gpu.c
+++ b/hw/display/virtio-gpu.c
@@ -937,6 +937,37 @@ virtio_gpu_resource_detach_backing(VirtIOGPU *g,
virtio_gpu_cleanup_mapping(g, res);
}
+void virtio_gpu_resource_assign_uuid(VirtIOGPU *g,
+ struct virtio_gpu_ctrl_command
*cmd)
+{
+ struct virtio_gpu_simple_resource *res;
+ struct virtio_gpu_resource_assign_uuid assign;
+ struct virtio_gpu_resp_resource_uuid resp;
+ QemuUUID *uuid = NULL;
+
+ VIRTIO_GPU_FILL_CMD(assign);
+ virtio_gpu_bswap_32(&assign, sizeof(assign));
+ trace_virtio_gpu_cmd_res_assign_uuid(assign.resource_id);
+
+ res = virtio_gpu_find_check_resource(g, assign.resource_id,
false, __func__, &cmd->error);
+ if (!res) {
+ return;
I think we need:
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
That should be already handled by the virtio_gpu_find_check_resource
function.
+ }
+
+ memset(&resp, 0, sizeof(resp));
+ resp.hdr.type = VIRTIO_GPU_RESP_OK_RESOURCE_UUID;
+
+ uuid = g_hash_table_lookup(g->resource_uuids,
GUINT_TO_POINTER(assign.resource_id));
+ if (!uuid) {
+ uuid = g_new(QemuUUID, 1);
+ qemu_uuid_generate(uuid);
+ g_hash_table_insert(g->resource_uuids,
GUINT_TO_POINTER(assign.resource_id), uuid);
+ }
+
+ memcpy(resp.uuid, uuid, sizeof(QemuUUID));
+ virtio_gpu_ctrl_response(g, cmd, &resp.hdr, sizeof(resp));
+}
+
void virtio_gpu_simple_process_cmd(VirtIOGPU *g,
struct virtio_gpu_ctrl_command
*cmd)
{
@@ -985,6 +1016,9 @@ void virtio_gpu_simple_process_cmd(VirtIOGPU *g,
case VIRTIO_GPU_CMD_RESOURCE_DETACH_BACKING:
virtio_gpu_resource_detach_backing(g, cmd);
break;
+ case VIRTIO_GPU_CMD_RESOURCE_ASSIGN_UUID:
+ virtio_gpu_resource_assign_uuid(g, cmd);
+ break;
default:
cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
break;
@@ -1343,6 +1377,8 @@ void virtio_gpu_device_realize(DeviceState
*qdev, Error **errp)
QTAILQ_INIT(&g->reslist);
QTAILQ_INIT(&g->cmdq);
QTAILQ_INIT(&g->fenceq);
+
+ g->resource_uuids = g_hash_table_new_full(NULL, NULL, NULL,
g_free);
hmm, we are missing an unrealize function, we are leaking. Could you
look at fixing it?
Thanks for the hint! I submitted PATCH v2.
}
void virtio_gpu_reset(VirtIODevice *vdev)
@@ -1368,6 +1404,10 @@ void virtio_gpu_reset(VirtIODevice *vdev)
g_free(cmd);
}
+ if (g->resource_uuids) {
+ g_hash_table_remove_all(g->resource_uuids);
+ }
+
virtio_gpu_base_reset(VIRTIO_GPU_BASE(vdev));
}
diff --git a/include/hw/virtio/virtio-gpu.h
b/include/hw/virtio/virtio-gpu.h
index 2e28507efe..41aed312f5 100644
--- a/include/hw/virtio/virtio-gpu.h
+++ b/include/hw/virtio/virtio-gpu.h
@@ -189,6 +189,8 @@ struct VirtIOGPU {
QTAILQ_HEAD(, VGPUDMABuf) bufs;
VGPUDMABuf *primary[VIRTIO_GPU_MAX_SCANOUTS];
} dmabuf;
+
+ GHashTable *resource_uuids;
};
struct VirtIOGPUClass {
@@ -258,6 +260,8 @@ int virtio_gpu_create_mapping_iov(VirtIOGPU *g,
uint32_t *niov);
void virtio_gpu_cleanup_mapping_iov(VirtIOGPU *g,
struct iovec *iov, uint32_t
count);
+void virtio_gpu_resource_assign_uuid(VirtIOGPU *g,
+ struct virtio_gpu_ctrl_command
*cmd);
void virtio_gpu_process_cmdq(VirtIOGPU *g);
void virtio_gpu_device_realize(DeviceState *qdev, Error **errp);
void virtio_gpu_reset(VirtIODevice *vdev);
--
2.34.1
lgtm otherwise
--
Marc-André Lureau
--
Kind regards,
Antonio Caggiano