LayerscapeのトピックRe: SDK 1.7: Freescale Custom Embedded Hypervisor

SDK 1.7: Freescale Custom Embedded Hypervisor

cpark — Tue, 05 May 2015 18:05:44 GMT

Hi,

Does LS1021A support the following feature? If yes, could you share some information and documents?

Freescale Custom Embedded Hypervisor multicore system for AMP based partitioning

That was mentioned on the following web page:

Linux® SDK for QorIQ Processors v1.7|Freescale

Thanks,

Chan Park

Re: SDK 1.7: Freescale Custom Embedded Hypervisor

scottwood — Tue, 05 May 2015 22:10:42 GMT

The Freescale Embedded Hypervisor does not support ARM chips. KVM is supported on LS1021A.

Re: SDK 1.7: Freescale Custom Embedded Hypervisor

cpark — Wed, 06 May 2015 12:30:15 GMT

Is there any other alternative for AMP based partitioning for LS1021A? Technically, it seems feasible to run Linux on one core and RTOS on the other core. Can I use KVM for this partitioning too?

Re: SDK 1.7: Freescale Custom Embedded Hypervisor

lunminliang — Wed, 20 May 2015 05:01:46 GMT

Hello Chan Park,

KVM is kernel-based virtual machine, while AMP is asynchronous multi-processing, running multiple operating system images on different processors of the same machine without virtualization... What do you mean by AMP here?

Regards

Lunmin

Re: SDK 1.7: Freescale Custom Embedded Hypervisor

scottwood — Wed, 20 May 2015 22:03:39 GMT

I think they mean they want a lightweight partitioning hypervisor rather than something as heavy as Linux+KVM. We don't currently have a supported product for this on ARM, but you may want to look at the Jailhouse hypervisor.

Re: SDK 1.7: Freescale Custom Embedded Hypervisor

cpark — Thu, 21 May 2015 13:46:28 GMT

Thanks Lunmin and Scott for sharing information.

Yes, what I'm looking for is a lightweight partitioning (with or without Hypervisor) to run Linux on one core and RTOS(or bare metal) on the other core.

Jailhouse hypervisor looks great, but it seems to require PSCI support for CPU offlining, which is not supported by LS1, I guess.

Re: SDK 1.7: Freescale Custom Embedded Hypervisor

lunminliang — Mon, 15 Jun 2015 09:14:37 GMT

Hello Chan Park,

According to QorIQ-SDK-1.7 on line document, in Section 10.3 KVM/QEMU (ARM), options of enabling PSCI:

Kernel features --->

[*] Support for the ARM Power State Coordination Interface (PSCI)

Here is the link:

Freescale Technical Information Center

Have a great day,
Lunmin

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Re: SDK 1.7: Freescale Custom Embedded Hypervisor

scottwood — Mon, 15 Jun 2015 17:09:49 GMT

What are you claiming that this will accomplish?