Xiong Zhang b24881e0b0 drm/i915/gvt: Add runtime_pm_get/put into gvt_switch_mmio ... If user continuously create vgpu, boot guest, shoutdown guest and destroy vgpu from remote, the following calltrace exists in dmesg sometimes: [ 6412.954721] RPM wakelock ref not held during HW access [ 6412.954795] WARNING: CPU: 7 PID: 11941 at linux/drivers/gpu/drm/i915/intel_drv.h:1800 intel_uncore_forcewake_get.part.7+0x96/0xa0 [i915] [ 6412.954915] Call Trace: [ 6412.954951] intel_uncore_forcewake_get+0x18/0x20 [i915] [ 6412.954989] intel_gvt_switch_mmio+0x8e/0x770 [i915] [ 6412.954996] ? __slab_free+0x14d/0x2c0 [ 6412.955001] ? __slab_free+0x14d/0x2c0 [ 6412.955006] ? __slab_free+0x14d/0x2c0 [ 6412.955041] intel_vgpu_stop_schedule+0x92/0xd0 [i915] [ 6412.955073] intel_gvt_deactivate_vgpu+0x48/0x60 [i915] [ 6412.955078] __intel_vgpu_release+0x55/0x260 [kvmgt] when this happens, gvt_switch_mmio is called at vgpu destroy, host i915 is idle and doesn't hold RPM wakelock, igd is in powersave mode, but gvt_switch_mmio require igd power on to access register, so intel_runtime_pm_get should be added to make sure igd power on before gvt_switch_mmio. v2: Move runtime_pm_get/put into gvt_switch_mmio.(Zhenyu) Signed-off-by: Xiong Zhang <xiong.y.zhang@intel.com> Signed-off-by: Zhi Wang <zhi.a.wang@intel.com>		2018-03-09 21:53:18 +08:00
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drm	drm/i915/gvt: Add runtime_pm_get/put into gvt_switch_mmio	2018-03-09 21:53:18 +08:00
host1x	gpu: host1x: Use IOMMU groups	2017-12-21 14:52:36 +01:00
ipu-v3	gpu: ipu-csi: add 10/12-bit grayscale support to mbus_code_to_bus_cfg	2018-02-19 15:13:05 +01:00
vga	vfs: do bulk POLL* -> EPOLL* replacement	2018-02-11 14:34:03 -08:00
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