Hi, I am trying to run a guest Linux using seL4's vmm library on the rk3568 platform, which uses gicv3 as its irq controller. But there is only gicv2 emulation officially supported in the vm library. I did find that there are 2 "gicv3" branch of the repository, but they are all outdated and have not being maintained for a long time. Is there any plan to formally add the gicv3 support to vmm library? Thanks.
"colorglass4" == colorglass4 colorglass4@outlook.com writes:
colorglass4> Hi, I am trying to run a guest Linux using seL4's vmm colorglass4> library on the rk3568 platform, which uses gicv3 as its colorglass4> irq controller. But there is only gicv2 emulation colorglass4> officially supported in the vm library. I did find that colorglass4> there are 2 "gicv3" branch of the repository, but they colorglass4> are all outdated and have not being maintained for a long colorglass4> time. Is there any plan to formally add the gicv3 colorglass4> support to vmm library? Thanks.
We at UNSW currently building a new VMM library for the microkit. Right now, it's a port of the existing VMM, and is available in alpha-test state at https://github.com/Ivan-Velickovic/libvmm
We're targeting the Odroid C4 at the moment, which has a GIC-400 (GIC v3). The gic-v3 works as a basic GIC, but I'm really hoping that for good performance we'll be able to use some of the IRQ direct injection and other virtualisation features; right now there's noone working on it though.
We'd love to review pull requests from anyone else who's working in this area.
Peter C
"Peter" == Peter Chubb via Devel devel@sel4.systems writes:
"colorglass4" == colorglass4 colorglass4@outlook.com writes:
colorglass4> Hi, I am trying to run a guest Linux using seL4's vmm colorglass4> library on the rk3568 platform, which uses gicv3 as its colorglass4> irq controller. But there is only gicv2 emulation colorglass4> officially supported in the vm library. I did find that colorglass4> there are 2 "gicv3" branch of the repository, but they colorglass4> are all outdated and have not being maintained for a long colorglass4> time. Is there any plan to formally add the gicv3 colorglass4> support to vmm library? Thanks.
Peter> We're targeting the Odroid C4 at the moment, which has a Peter> GIC-400 (GIC v3). The gic-v3 works as a basic GIC, but I'm Peter> really hoping that for good performance we'll be able to use Peter> some of the IRQ direct injection and other virtualisation Peter> features; right now there's noone working on it though.
I was mistaken; the GIC-400 is a GIC v2, but with some hypervisor extensions.
Peter> We'd love to review pull requests from anyone else who's Peter> working in this area.
This is still true though ..
Peter C
Hi Peter, thanks for your response!
In fact, I had take some efforts to write the gic-v3 emulation codes that referred to the gic-v2 codes of the origin vmm library. Though it only has the basic functions of gic-v3, I still got the guest Linux ran based on it on the rk3568.
Now that you are working on a new vmm library, I will try to tend my work here and make contribution as possible as I can.
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colorglass4＠outlook.com -
Peter Chubb