* [Qemu-devel] [PATCH v3 1/2] console: introduce dpy_gfx_update_full
2018-04-26 8:21 [Qemu-devel] [PATCH v3 0/2] Add vfio dma-buf based display reset handling Tina Zhang
@ 2018-04-26 8:21 ` Tina Zhang
2018-04-26 8:21 ` [Qemu-devel] [PATCH v3 2/2] ui: introduce vfio_display_reset Tina Zhang
1 sibling, 0 replies; 4+ messages in thread
From: Tina Zhang @ 2018-04-26 8:21 UTC (permalink / raw)
To: alex.williamson, kraxel, zhenyuw, hang.yuan
Cc: Tina Zhang, intel-gvt-dev, qemu-devel
dpy_gfx_update_full is used to do the whole display surface update.
This function is proposed by Gerd Hoffmann.
Signed-off-by: Tina Zhang <tina.zhang@intel.com>
---
include/ui/console.h | 1 +
ui/console.c | 10 ++++++++++
2 files changed, 11 insertions(+)
diff --git a/include/ui/console.h b/include/ui/console.h
index 37a8d68..981b519 100644
--- a/include/ui/console.h
+++ b/include/ui/console.h
@@ -291,6 +291,7 @@ bool dpy_ui_info_supported(QemuConsole *con);
int dpy_set_ui_info(QemuConsole *con, QemuUIInfo *info);
void dpy_gfx_update(QemuConsole *con, int x, int y, int w, int h);
+void dpy_gfx_update_full(QemuConsole *con);
void dpy_gfx_replace_surface(QemuConsole *con,
DisplaySurface *surface);
void dpy_text_cursor(QemuConsole *con, int x, int y);
diff --git a/ui/console.c b/ui/console.c
index 3fb2f4e..b02510c 100644
--- a/ui/console.c
+++ b/ui/console.c
@@ -1574,6 +1574,16 @@ void dpy_gfx_update(QemuConsole *con, int x, int y, int w, int h)
}
}
+void dpy_gfx_update_full(QemuConsole *con)
+{
+ if (!con->surface) {
+ return;
+ }
+ dpy_gfx_update(con, 0, 0,
+ surface_width(con->surface),
+ surface_height(con->surface));
+}
+
void dpy_gfx_replace_surface(QemuConsole *con,
DisplaySurface *surface)
{
--
2.7.4
^ permalink raw reply related [flat|nested] 4+ messages in thread
* [Qemu-devel] [PATCH v3 2/2] ui: introduce vfio_display_reset
2018-04-26 8:21 [Qemu-devel] [PATCH v3 0/2] Add vfio dma-buf based display reset handling Tina Zhang
2018-04-26 8:21 ` [Qemu-devel] [PATCH v3 1/2] console: introduce dpy_gfx_update_full Tina Zhang
@ 2018-04-26 8:21 ` Tina Zhang
2018-04-26 13:02 ` Gerd Hoffmann
1 sibling, 1 reply; 4+ messages in thread
From: Tina Zhang @ 2018-04-26 8:21 UTC (permalink / raw)
To: alex.williamson, kraxel, zhenyuw, hang.yuan
Cc: Tina Zhang, intel-gvt-dev, qemu-devel
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 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>
---
hw/vfio/display.c | 10 ++++++++++
hw/vfio/pci.c | 7 +++++++
hw/vfio/pci.h | 1 +
3 files changed, 18 insertions(+)
diff --git a/hw/vfio/display.c b/hw/vfio/display.c
index 7d727ce..dc4b1e9 100644
--- a/hw/vfio/display.c
+++ b/hw/vfio/display.c
@@ -198,6 +198,16 @@ static void vfio_display_dmabuf_exit(VFIODisplay *dpy)
}
/* ---------------------------------------------------------------------- */
+void vfio_display_reset(VFIOPCIDevice *vdev)
+{
+ if (!vdev || !vdev->dpy || !vdev->dpy->con) {
+ return;
+ }
+
+ dpy_gl_scanout_disable(vdev->dpy->con);
+ vfio_display_dmabuf_exit(vdev->dpy);
+ dpy_gfx_update_full(vdev->dpy->con);
+}
static void vfio_display_region_update(void *opaque)
{
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index b9bc6cd..648b29d 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -3098,11 +3098,18 @@ static void vfio_pci_reset(DeviceState *dev)
{
PCIDevice *pdev = DO_UPCAST(PCIDevice, qdev, dev);
VFIOPCIDevice *vdev = DO_UPCAST(VFIOPCIDevice, pdev, pdev);
+ VFIODisplay *dpy = vdev->dpy;
trace_vfio_pci_reset(vdev->vbasedev.name);
vfio_pci_pre_reset(vdev);
+ /* vfio_display_reset is needed by dma-buf based vfio display */
+ if (vdev->display != ON_OFF_AUTO_OFF && dpy &&
+ dpy->dmabuf.primary) {
+ vfio_display_reset(vdev);
+ }
+
if (vdev->resetfn && !vdev->resetfn(vdev)) {
goto post_reset;
}
diff --git a/hw/vfio/pci.h b/hw/vfio/pci.h
index 629c875..59ab775 100644
--- a/hw/vfio/pci.h
+++ b/hw/vfio/pci.h
@@ -176,6 +176,7 @@ int vfio_pci_igd_opregion_init(VFIOPCIDevice *vdev,
struct vfio_region_info *info,
Error **errp);
+void vfio_display_reset(VFIOPCIDevice *vdev);
int vfio_display_probe(VFIOPCIDevice *vdev, Error **errp);
void vfio_display_finalize(VFIOPCIDevice *vdev);
--
2.7.4
^ permalink raw reply related [flat|nested] 4+ messages in thread