ACRN Project Technical Community Meeting Minutes

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ACRN Project Technical Community Meeting Minutes - 05/29/2019

Wang, Hongbo

#313

Meeting Minutes Archive: Google doc: https://drive.google.com/drive/u/2/folders/111m6iU3PjSZebOOKzLagYPUWMvseGLeU

ACRN Project TCM - 29th May 2019

Location

Online conference link: https://zoom.us/j/45717121

Zoom Meeting ID: 457-171-121

Agenda

ACRN project update

2nd ACRN Meetup schedule on 6/11-12 in Shanghai, as part of IoT open source community seminar. You’re welcome to register and join! http://meetu.ps/e/GFgCC/FPJRx/f

HE, Min: AcrnGT Virtual Display Deep Dive

Download foil from ACRN Presentation->ACRN_TCM->WW22’19

Q1: GVT-s support multiple users in UOS?

A1: Multiple users support in UOS doesn’t rely on GVT-g

Q2: Can UOS detect virtual display dynamically?

A2: No. Right now GVT-g doesn’t support hot plug in UOS.

Q3: is there any limitation on display resolution?

A3: Yes. To balance the plane numbers and resolution, we had to limit the display resolutions because of limited DDB resource in GPU hardware. Right now we support maximum three monitors with 1080p resolution.

Q4: Is there a monitor and a vdisplay device both in the UOS?

A4: There’s no vdisplay device in UOS. Only a virtual GPU hardware and monitors reported by virtual GPU.

Q5: As far as physical monitor is concerned, how do we switch between display from SOS/UOS-1/UOS-2? Do all of them share the same screen or we need to switch?

A5: The AcrnGT framework doesn’t limit dynamic switch usage, but customers need to modify the code to implement such scenario. For example, users can implement a sysfs node to expose the plane ownership variables so that they can be modify in runtime.

If users want to share one screen, right now, they can set the SOS display on plane 1, UOS display on plane 2, etc.

Q6: does this degrade compositor performance?

A6: Plane restriction will degrade compositor’s performance, because if limited planes exposed to the driver, sometime driver will not be able to leverage the HW composing.

Q7: Do you have a photo of showing displays from SOS and UOS?

A7: No live demo for this TCM talk this week.

All: Community open discussion.

Next meeting agenda proposal:

WW	Topic	Presenter	Status
WW02	TPM2.0 virtualization in ACRN	DENG, Wei	1/9
WW03	Polling mode Virtio and its advantage for RT VM	DENG, Jie	1/16
WW04	Buffer sharing from UOS to SOS, HyperDMA usage	LIU, Xinyun	1/23
WW05	USB HUB Virtualization	WU, Xiaoguang	1/30
WW07	ACRN Device Model QoS Design	LIU, Long	2/13
WW08	ACRN Debug Tips	CHEN, Jason	2/20
WW09	GVT-g debug trace tool	GONG, Zhipeng	2/27
WW10	Kata Container Architecture: First Steps with ACRN	Dhanraj, Vijay	3/6
WW11	One ACRN hypervisor to support multi-platform	WU, Xiangyang	3/13
WW12	Power button key mediator design in ACRN	LIU, Yuan	3/20
WW13	Local APIC Virtualization Enhancement for Intel KBL platform	LI, Fei	3/27
WW14	Safety VM Support	YIN, FengWei	4/3
WW15	How to customize GPIO in ACRN	LIU, Yuan	4/10
WW16	ACRN Cache QoS support based on CAT	TAO, Yuhong	4/17
WW17	ACRN Real-Time measurement Methodology	LI, Wilson	4/24
WW19	I2C Virtualization	CHEN, Conghui	5/8
WW20	SGX Virtualization in ACRN	WU, Binbin	5/15
WW21	Logger Improvement on acrn-dm	CAO, Minggui	5/22
WW22	AcrnGT Virtual Display Deep Dive	HE, Min	5/29
	Decouple VM configs and board configs
	S5 support for dm-launched RTVM
	High speed UART share between UOS/SOS
	I2C Virtualization
	GPIO Virtualization Update
	Open vSwitch Design for ACRN
	OVMF to support secure boot