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From: Dmitry Osipenko <dmitry.osipenko@collabora.com>
To: Akihiko Odaki <akihiko.odaki@daynix.com>, Huang Rui <ray.huang@amd.com>,
=?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= <marcandre.lureau@redhat.com>,
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"Michael S . Tsirkin" <mst@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>
Cc: Gert Wollny <gert.wollny@collabora.com>, qemu-devel@nongnu.org,
Gurchetan Singh <gurchetansingh@chromium.org>, Alyssa Ross <hi@alyssa.is>,
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Chen Jiqian <Jiqian.Chen@amd.com>, Rob Clark <robdclark@gmail.com>,
Yiwei Zhang <zzyiwei@chromium.org>, Sergio Lopez Pascual <slp@redhat.com>
Subject: [PATCH v11 03/10] virtio-gpu: Handle virgl fence creation errors
Date: Mon, 10 Mar 2025 15:05:48 +0300
Message-ID: <20250310120555.150077-4-dmitry.osipenko@collabora.com>
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Print out error messages when virgl fence creation fails to aid debugging
of the fence-related bugs.
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Alex Benn=C3=A9e <alex.bennee@linaro.org>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
---
hw/display/virtio-gpu-virgl.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/hw/display/virtio-gpu-virgl.c b/hw/display/virtio-gpu-virgl.c
index 145a0b387956..2eb6aaab4e84 100644
--- a/hw/display/virtio-gpu-virgl.c
+++ b/hw/display/virtio-gpu-virgl.c
@@ -872,6 +872,7 @@ void virtio_gpu_virgl_process_cmd(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
bool cmd_suspended =3D false;
+ int ret;
=20
VIRTIO_GPU_FILL_CMD(cmd->cmd_hdr);
=20
@@ -970,7 +971,17 @@ void virtio_gpu_virgl_process_cmd(VirtIOGPU *g,
}
=20
trace_virtio_gpu_fence_ctrl(cmd->cmd_hdr.fence_id, cmd->cmd_hdr.type);
- virgl_renderer_create_fence(cmd->cmd_hdr.fence_id, cmd->cmd_hdr.type);
+
+ /*
+ * Unlike other virglrenderer functions, this one returns a positive
+ * error code.
+ */
+ ret =3D virgl_renderer_create_fence(cmd->cmd_hdr.fence_id, 0);
+ if (ret) {
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: virgl_renderer_create_fence error: %s",
+ __func__, strerror(ret));
+ }
}
=20
static void virgl_write_fence(void *opaque, uint32_t fence)
--=20
2.48.1