(I trimmed the long CC list) On Fri, Jul 28, 2017 at 05:45:01PM -0400, Jintack Lim wrote: > On Fri, Jul 28, 2017 at 4:13 PM, Bandan Das <bsd@xxxxxxxxxx> wrote: > > Jintack Lim <jintack.lim@xxxxxxxxxx> writes: > > ... > >>> > >>> I'll share my experiment setup shortly. > >> > >> I summarized my experiment setup here. > >> > >> https://github.com/columbia/nesting-pub/wiki/Nested-virtualization-on-ARM-setup > > > > Thanks Jintack! I was able to test L2 boot up with these instructions. > > Thanks for the confirmation! > > > > > Next, I will try to run some simple tests. Any suggestions on reducing the L2 bootup > > time in my test setup ? I think I will try to make the L2 kernel print > > less messages; and maybe just get rid of some of the userspace services. > > I also applied the patch to reduce the timer frequency btw. > > I think you can try to use those kernel parameters: "loglevel=1", with > which the kernel print (almost) nothing during the boot process but > the init process will print something, or "console=none", with which > you don't see anything but the login message. I didn't used them > because I wanted to see the L2 boot message as soon as possible :) > For some quick testing, kvm-unit-tests can be used as an L2 guest. Just copy the repository with compiled unit tests to the L1 disk image and then run $ ./run_tests.sh Also, I've just added some support to it, available on this branch https://github.com/rhdrjones/kvm-unit-tests/commits/arm64/hyp-mode that may make it somewhat useful for L1 guest testing too. I've only tested on TCG (which supports starting CPUs in EL2 by setting the virt model's virtualization property) To use it for L1 guest testing, copy the repository with compiled unit tests to the L0 disk image and run $ QEMU=/path/to/nested-qemu ./run_tests -- -cpu host,nested=true I've also added tests that are specifically for L1 guest testing. Below is the output of running them on TCG $ ./run_tests.sh -g hyp -- -machine virtualization=on PASS hyp (4 tests) $ cat logs/hyp.log timeout -k 1s --foreground 90s /home/drjones/code/rhdrjones/build/q/aarch64-softmmu/qemu-system-aarch64 -nodefaults -machine virt,accel=tcg -cpu cortex-a57 -device virtio-serial-device -device virtconsole,chardev=ctd -chardev testdev,id=ctd -device pci-testdev -display none -serial stdio -kernel arm/hyp.flat -smp 4 -machine virtualization=on # -initrd /tmp/tmp.hDF1mV9Ck8 INFO: hyp: NR_CPUS=4 PASS: hyp: started EL2 PASS: hyp: el2: hvc PASS: hyp: eret to EL1 PASS: hyp: el1: hvc PASS: hyp: reset: started EL2 PASS: hyp: reset: el2: hvc PASS: hyp: reset: eret to EL1 PASS: hyp: reset: el1: hvc SUMMARY: 4 tests s/-machine virtualization=on/-cpu host,nested=true/ for the FastModel environment. Maybe it'll work... Thanks, drew _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
