Re: [PATCH v4] video: hyperv: hyperv_fb: refresh the VM screen by force on VM panic

2014-08-03 Thread Tomi Valkeinen
On 01/08/14 14:27, Dexuan Cui wrote: > Currently the VSC has no chance to notify the VSP of the dirty rectangle on VM > panic because the notification work is done in a workqueue, and in panic() the > kernel typically ends up in an infinite loop, and a typical kernel config has > CONFIG_PREEMPT_VOL

[PATCH v4] video: hyperv: hyperv_fb: refresh the VM screen by force on VM panic

2014-08-01 Thread Dexuan Cui
Currently the VSC has no chance to notify the VSP of the dirty rectangle on VM panic because the notification work is done in a workqueue, and in panic() the kernel typically ends up in an infinite loop, and a typical kernel config has CONFIG_PREEMPT_VOLUNTARY=y and CONFIG_PREEMPT is not set, so a