Re: [PATCH 0/9] kvm-unit-tests/arm: initial drop

["María Soler Heredia" <maria.solher@gmail.com>]

Andrew Jones <drjones <at> redhat.com> writes:

 
> This series introduces arm to kvm-unit-tests.

> To use this you need an arm platform or simulator capable
> of running kvmarm and a qemu with the mach-virt patches[2], as
> well as the previously mentioned virtio-testdev.

Hello,

I have been playing with your tests for a while and I cannot seem to get
them to work all right. When I run them disabling kvm on the arm-run script,
they do work, but when I run them with kvm enabled they fail.

This is my output:

./arm-run arm/boot.flat -smp 1 -m 256 -append 'info 0x10000000 0x1000'
qemu-system-arm -device virtio-testdev -display none -serial stdio -M virt
-cpu cortex-a15 -enable-kvm -kernel arm/boot.flat -smp 1 -m 256 -append info
0x10000000 0x1000
kvm [1252]: load/store instruction decoding not implemented
error: kvm run failed Function not implemented
./arm-run: line 16:  1251 Aborted                 $command "$@"
Return value from qemu: 134
FAIL boot_info
./arm-run arm/boot.flat -smp 1 -append 'vectors'
qemu-system-arm -device virtio-testdev -display none -serial stdio -M virt
-cpu cortex-a15 -enable-kvm -kernel arm/boot.flat -smp 1 -append vectors
kvm [1257]: load/store instruction decoding not implemented
error: kvm run failed Function not implemented
./arm-run: line 16:  1256 Aborted                 $command "$@"
Return value from qemu: 134
FAIL boot_vectors

I am using FastModels Model Debugger version 8.2.028, with a model of this
characteristics:

Model:
------
Model name: ARM_Cortex-A15
Instance: cluster.cpu0
Using CADI 2.0 interface revision 0.
Version: 8.2.72
Generated by Core Generator: No
Needs SimGen License: No

running the latest stable linux release and qemu-devel's latest qemu with
the patches indicated here
https://lists.gnu.org/archive/html/qemu-devel/2013-10/msg02428.html plus
> [1] http://lists.nongnu.org/archive/html/qemu-devel/2013-10/msg01815.html

I tested the instalation by running a linux with the same setup using this call:
qemu-system-arm \
        -display none \
        -enable-kvm \
        -kernel zImage\
        -m 128 -M virt -cpu cortex-a15 \
        -drive if=none,file=linux.img,id=fs \
        -device virtio-blk-device,drive=fs

As I said, the tests pass if the kvm is not enabled and fail otherwise. I
have added a few printfs for debugging and I can tell that the code in
boot.c runs ok, but then when virtio_testdev is called (from
virtio_testdev_exit) the execution throws an exception (more specifically
the line  *tdp++ = cpu_to_le32(va_arg(va, unsigned)); inside the first while.

I am not used to sending emails to this kind of list, so I don't know if I
am being too specific, too little or maybe not even giving the right
information. Please tell me what else you need and if you can help me solve
this problem. 

Thank you very much,
María.