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Yiwei Zhang 1fa2ffdbec virtio-gpu: support context init multiple timeline 
Venus and later native contexts have their own fence context along with
multiple timelines within. Fences wtih VIRTIO_GPU_FLAG_INFO_RING_IDX in
the flags must be dispatched to be created on the target context. Fence
signaling also has to be handled on the specific timeline within that
target context.

Before this change, venus fencing is completely broken if the host
driver doesn't support implicit fencing with external memory objects.
Frames can go backwards along with random artifacts on screen if the
host driver doesn't attach an implicit fence to the render target. The
symptom could be hidden by certain guest wsi backend that waits on a
venus native VkFence object for the actual payload with limited present
modes or under special configs. e.g. x11 mailbox or xwayland.

After this change, everything related to venus fencing starts making
sense. Confirmed this via guest and host side perfetto tracing.

Cc: qemu-stable@nongnu.org
Fixes: 94d0ea1c19 ("virtio-gpu: Support Venus context")
Signed-off-by: Yiwei Zhang <zzyiwei@gmail.com>
Reviewed-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Message-Id: <20250518152651.334115-1-zzyiwei@gmail.com>
[AJB: remove version history from commit message]
Tested-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Akihiko Odaki <odaki@rsg.ci.i.u-tokyo.ac.jp>
Message-ID: <20250627112512.1880708-16-alex.bennee@linaro.org>
2025-07-02 10:10:07 +01:00
..
acpi-vga-stub.c acpi: pc: vga: use AcpiDevAmlIf interface to build VGA device descriptors 2022-11-07 14:00:29 -05:00
acpi-vga.c acpi: pc: vga: use AcpiDevAmlIf interface to build VGA device descriptors 2022-11-07 14:00:29 -05:00
apple-gfx-mmio.m qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
apple-gfx-pci.m qom: Make InterfaceInfo[] uses const 2025-04-25 17:00:41 +02:00
apple-gfx.h include/system: Move exec/memory.h to system/memory.h 2025-04-23 14:08:21 -07:00
apple-gfx.m hw/display/apple-gfx: Replace QemuSemaphore with QemuEvent 2025-06-06 14:32:55 +02:00
artist.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
ati.c qom: Make InterfaceInfo[] uses const 2025-04-25 17:00:41 +02:00
ati_2d.c hw/display/ati: allow compiling without PIXMAN 2023-11-07 14:04:25 +04:00
ati_dbg.c ati-vga: Add 30 bit palette access register 2023-11-06 15:58:43 +04:00
ati_int.h ati-vga: Implement fallback for pixman routines 2023-11-06 15:58:45 +04:00
ati_regs.h ati-vga: Add 30 bit palette access register 2023-11-06 15:58:43 +04:00
bcm2835_fb.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
bochs-display.c qom: Make InterfaceInfo[] uses const 2025-04-25 17:00:41 +02:00
cg3.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
cirrus_vga.c qom: Make InterfaceInfo[] uses const 2025-04-25 17:00:41 +02:00
cirrus_vga_internal.h hw/display/cirrus_vga: Move "isa-cirrus-vga" device into a separate file 2018-10-15 09:57:33 +02:00
cirrus_vga_isa.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
cirrus_vga_rop.h cirrus: fix off-by-one in cirrus_bitblt_rop_bkwd_transp_*_16 2017-03-17 10:23:44 +01:00
cirrus_vga_rop2.h cirrus: fix PUTPIXEL macro 2017-03-27 12:14:45 +02:00
dm163.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
dpcd.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
edid-generate.c edid: Fix clock of Detailed Timing Descriptor 2022-03-04 11:31:46 +01:00
edid-region.c include/system: Move exec/memory.h to system/memory.h 2025-04-23 14:08:21 -07:00
exynos4210_fimd.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
framebuffer.c Include hw/hw.h exactly where needed 2019-08-16 13:31:52 +02:00
framebuffer.h include/system: Move exec/memory.h to system/memory.h 2025-04-23 14:08:21 -07:00
g364fb.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
i2c-ddc.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
jazz_led.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
Kconfig pvg: do not enable it on cross-architecture targets 2025-02-25 16:18:11 +01:00
macfb.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
meson.build pvg: add option to configure it out 2025-02-25 16:18:12 +01:00
next-fb.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
omap_lcdc.c hw/arm/omap: Drop useless casts from void * to pointer 2023-01-12 17:15:09 +00:00
pl110.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
pl110_template.h Replace config-time define HOST_WORDS_BIGENDIAN 2022-04-06 10:50:37 +02:00
qxl-logger.c hw/display/qxl: Pass requested buffer size to qxl_phys2virt() 2022-11-29 18:15:26 -05:00
qxl-render.c include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
qxl.c qom: Make InterfaceInfo[] uses const 2025-04-25 17:00:41 +02:00
qxl.h Replace "iothread lock" with "BQL" in comments 2024-01-08 10:45:43 -05:00
ramfb-standalone.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
ramfb-stubs.c ramfb: move stubs out of stubs/ 2024-04-18 11:17:27 +02:00
ramfb.c include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
sii9022.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
sm501.c qom: Make InterfaceInfo[] uses const 2025-04-25 17:00:41 +02:00
ssd0303.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
ssd0323.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
tcx.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
trace-events hw/display/apple-gfx: Adds configurable mode list 2024-12-31 21:21:34 +01:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00
vga-access.h vga: move access helpers to separate include file 2019-09-19 10:37:46 +02:00
vga-helpers.h vga: optimize horizontal pel panning in 256-color modes 2024-01-18 10:43:14 +01:00
vga-isa.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
vga-mmio.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
vga-pci.c qom: Make InterfaceInfo[] uses const 2025-04-25 17:00:41 +02:00
vga.c exec: Rename target_words_bigendian() -> target_big_endian() 2025-04-25 17:00:42 +02:00
vga_int.h include/system: Move exec/ioport.h to system/ioport.h 2025-04-23 14:08:21 -07:00
vga_regs.h vga: sort-of implement word and double-word access modes 2024-01-18 10:43:14 +01:00
vhost-user-gpu-pci.c modules: introduces module_kconfig directive 2022-06-06 09:26:53 +02:00
vhost-user-gpu.c vhost-user: return failure if backend crash when live migration 2025-05-14 05:39:15 -04:00
vhost-user-vga.c modules: introduces module_kconfig directive 2022-06-06 09:26:53 +02:00
virtio-dmabuf.c hw/display: fix memleak from virtio_add_resource 2023-10-22 05:18:16 -04:00
virtio-gpu-base.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
virtio-gpu-gl.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
virtio-gpu-pci-gl.c modules: introduces module_kconfig directive 2022-06-06 09:26:53 +02:00
virtio-gpu-pci-rutabaga.c qom: Make InterfaceInfo[] uses const 2025-04-25 17:00:41 +02:00
virtio-gpu-pci.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
virtio-gpu-rutabaga.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
virtio-gpu-udmabuf-stubs.c virtio-gpu: splitting one extended mode guest fb into n-scanouts 2021-11-05 12:29:19 +01:00
virtio-gpu-udmabuf.c ui/egl: use DRM_FORMAT_MOD_INVALID as default modifier 2025-05-06 11:57:38 +04:00
virtio-gpu-virgl.c virtio-gpu: support context init multiple timeline 2025-07-02 10:10:07 +01:00
virtio-gpu.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
virtio-vga-gl.c modules: introduces module_kconfig directive 2022-06-06 09:26:53 +02:00
virtio-vga-rutabaga.c gfxstream + rutabaga: add initial support for gfxstream 2023-10-16 11:29:56 +04:00
virtio-vga.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
virtio-vga.h hw/display/virtio-vga: Convert TYPE_VIRTIO_VGA_BASE to 3-phase reset 2022-12-16 15:59:07 +00:00
vmware_vga.c hw/display/vmware_vga: skip automatic zero-init of large struct 2025-06-12 13:40:15 -04:00
xenfb.c include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
xlnx_dp.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00