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| author | Colin Xu <colin.xu@intel.com> | 2020-07-09 09:09:57 +0200 |
|---|---|---|
| committer | Zhenyu Wang <zhenyuw@linux.intel.com> | 2020-07-29 08:18:32 +0200 |
| commit | 9e7c0efadb86ddb58965561bbca638d44792d78f (patch) | |
| tree | 4b0f2f50f22ede6c1961dea82623c27fe0cf54f4 /drivers/gpu/drm/imx/dw_hdmi-imx.c | |
| parent | drm/i915/gvt: Do not destroy ppgtt_mm during vGPU D3->D0. (diff) | |
| download | linux-9e7c0efadb86ddb58965561bbca638d44792d78f.tar.xz linux-9e7c0efadb86ddb58965561bbca638d44792d78f.zip | |
drm/i915/gvt: Do not reset pv_notified when vGPU transit from D3->D0
Unlike full initialization like normal boot, guest driver won't
pv_notified GVT when vGPU transit from D3->D0. If pv_notified is reset,
later vGPU operations will trigger enter into failsafe mode.
Considering the fact that vGPU will at least notify GVT pv_notified once
before D3/D0 transition, it's safe to skip reset pv_notified in D3->D0.
To test this feature, make sure S3 is enabled in QEMU parameters:
i440fx: PIIX4_PM.disable_s3=0
q35: ICH9-LPC.disable_s3=0
Also need enable sleep option in guest OS if it's disabled.
v2:
- Revise commit message to more accurate description. (Kevin)
- Split patch by logic. (Zhenyu)
Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Hang Yuan <hang.yuan@linux.intel.com>
Signed-off-by: Colin Xu <colin.xu@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20200709071002.247960-3-colin.xu@intel.com
Diffstat (limited to 'drivers/gpu/drm/imx/dw_hdmi-imx.c')
0 files changed, 0 insertions, 0 deletions