Calling ramfb_display_update() might replace the DisplaySurface with the
boot display, which in turn will free the currently active
DisplaySurface.
So clear our DisplaySurface pinter (dpy->region.surface pointer) to (a)
avoid use-after-free and (b) force replacing the boot display with the
real display when switching back.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
Message-id: 20200713124520.23266-1-kraxel@redhat.com
This reverts commit f79081b4b7.
Patch has broken byteorder handling: RAMFBCfg fields are in bigendian
byteorder, the reset function doesn't care so native byteorder is used
instead. Given this went unnoticed so far the feature is obviously
unused, so just revert the patch.
Cc: Hou Qiming <hqm03ster@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Message-id: 20200429115236.28709-2-kraxel@redhat.com
Fixes: 8b818e059b
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Message-Id: <20200218094402.26625-9-philmd@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Fill the new QemuDmaBuf->modifier field properly from plane info.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
Message-id: 20190529072144.26737-3-kraxel@redhat.com
If xres / yres were specified in QEMU command line, write them as an initial
resolution to the fw-config space on guest reset, which a later BIOS / OVMF
patch can take advantage of.
Signed-off-by: HOU Qiming <hqm03ster@gmail.com>
Signed-off-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Message-id: 20190513115731.17588-4-marcel.apfelbaum@gmail.com
[fixed malformed patch]
Signed-off-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Kick the display link up event with a 0.1 sec delay,
so the guest has a chance to notice the link down first.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
[update for redefined macro]
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This allows configure the display resolution which the vgpu should use.
The information will be passed to the guest using EDID, so the mdev
driver must support the vfio edid region for this to work.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This patch adds EDID support to the vfio display (aka vgpu) code.
When supported by the mdev driver qemu will generate a EDID blob
and pass it on using the new vfio edid region. The EDID blob will
be updated on UI changes (i.e. window resize), so the guest can
adapt.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
[remove control flow via macro, use unsigned format specifier]
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
So we have a boot display when using a vgpu as primary display.
ramfb depends on a fw_cfg file. fw_cfg files can not be added and
removed at runtime, therefore a ramfb-enabled vfio device can't be
hotplugged.
Add a nohotplug variant of the vfio-pci device (as child class). Add
the ramfb property to the nohotplug variant only. So to enable the vgpu
display with boot support use this:
-device vfio-pci-nohotplug,display=on,ramfb=on,sysfsdev=...
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
During guest OS reboot, guest framebuffer is invalid. It will cause
bugs, if the invalid guest framebuffer is still used by host.
This patch is to introduce vfio_display_reset which is invoked
during vfio display reset. This vfio_display_reset function is used
to release the invalid display resource, disable scanout mode and
replace the invalid surface with QemuConsole's DisplaySurafce.
This patch can fix the GPU hang issue caused by gd_egl_draw during
guest OS reboot.
Changes v3->v4:
- Move dma-buf based display check into the vfio_display_reset().
(Gerd)
Changes v2->v3:
- Limit vfio_display_reset to dma-buf based vfio display. (Gerd)
Changes v1->v2:
- Use dpy_gfx_update_full() update screen after reset. (Gerd)
- Remove dpy_gfx_switch_surface(). (Gerd)
Signed-off-by: Tina Zhang <tina.zhang@intel.com>
Message-id: 1524820266-27079-3-git-send-email-tina.zhang@intel.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Infrastructure for display support. Must be enabled
using 'display' property.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed By: Kirti Wankhede <kwankhede@nvidia.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
