On 2023/09/20 14:50, Huang Rui wrote:
On Sat, Sep 16, 2023 at 12:37:29AM +0800, Akihiko Odaki wrote:
On 2023/09/16 1:04, Akihiko Odaki wrote:
On 2023/09/15 20:11, Huang Rui wrote:
From: Antonio Caggiano <antonio.caggi...@collabora.com>
Support BLOB resources creation, mapping and unmapping by calling the
new stable virglrenderer 0.10 interface. Only enabled when available and
via the blob config. E.g. -device virtio-vga-gl,blob=true
Signed-off-by: Antonio Caggiano <antonio.caggi...@collabora.com>
Signed-off-by: Dmitry Osipenko <dmitry.osipe...@collabora.com>
Signed-off-by: Xenia Ragiadakou <xenia.ragiada...@amd.com>
Signed-off-by: Huang Rui <ray.hu...@amd.com>
---
V4 -> V5:
- Use memory_region_init_ram_ptr() instead of
memory_region_init_ram_device_ptr() (Akihiko)
hw/display/virtio-gpu-virgl.c | 213 +++++++++++++++++++++++++++++++++
hw/display/virtio-gpu.c | 4 +-
include/hw/virtio/virtio-gpu.h | 5 +
meson.build | 4 +
4 files changed, 225 insertions(+), 1 deletion(-)
diff --git a/hw/display/virtio-gpu-virgl.c
b/hw/display/virtio-gpu-virgl.c
index 312953ec16..563a6f2f58 100644
--- a/hw/display/virtio-gpu-virgl.c
+++ b/hw/display/virtio-gpu-virgl.c
@@ -17,6 +17,7 @@
#include "trace.h"
#include "hw/virtio/virtio.h"
#include "hw/virtio/virtio-gpu.h"
+#include "hw/virtio/virtio-gpu-bswap.h"
#include "ui/egl-helpers.h"
@@ -78,9 +79,24 @@ static void virgl_cmd_create_resource_3d(VirtIOGPU *g,
virgl_renderer_resource_create(&args, NULL, 0);
}
+static void virgl_resource_destroy(VirtIOGPU *g,
+ struct virtio_gpu_simple_resource
*res)
+{
+ if (!res)
+ return;
+
+ QTAILQ_REMOVE(&g->reslist, res, next);
+
+ virtio_gpu_cleanup_mapping_iov(g, res->iov, res->iov_cnt);
+ g_free(res->addrs);
+
+ g_free(res);
+}
+
static void virgl_cmd_resource_unref(VirtIOGPU *g,
struct virtio_gpu_ctrl_command
*cmd)
{
+ struct virtio_gpu_simple_resource *res;
struct virtio_gpu_resource_unref unref;
struct iovec *res_iovs = NULL;
int num_iovs = 0;
@@ -88,13 +104,22 @@ static void virgl_cmd_resource_unref(VirtIOGPU *g,
VIRTIO_GPU_FILL_CMD(unref);
trace_virtio_gpu_cmd_res_unref(unref.resource_id);
+ res = virtio_gpu_find_resource(g, unref.resource_id);
+
virgl_renderer_resource_detach_iov(unref.resource_id,
&res_iovs,
&num_iovs);
if (res_iovs != NULL && num_iovs != 0) {
virtio_gpu_cleanup_mapping_iov(g, res_iovs, num_iovs);
+ if (res) {
+ res->iov = NULL;
+ res->iov_cnt = 0;
+ }
}
+
virgl_renderer_resource_unref(unref.resource_id);
+
+ virgl_resource_destroy(g, res);
This may leak memory region.
The memory region should be freed under virgl_cmd_resource_unmap_blob()
which is calling memory_region_del_subregion(&b->hostmem, res->region).
Because this region is created by map_blob(). Do we have the case to call
virgl_cmd_resource_unref() without calling virgl_cmd_resource_unmap_blob()
for blob memory?
Calling virgl_cmd_resource_unmap_blob() and virgl_cmd_resource_unref()
in order is a guest's responsibility, and we are required to prepare for
broken guests.
