Re: [nVMX w/ Haswell] KVM unit-tests in L1 - eventinj test fails trying to send NMI

[Jan Kiszka <jan.kiszka@web.de>]

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On 2013-06-05 11:06, Kashyap Chamarthy wrote:
> Adding Jan, Jun, to see if they have any inputs here.

Thanks for the note, it's very helpful! This test actually fails on
older CPUs as well, and I can finally reproduce the issue that Jay also
reported. I'm not able to "cure" it by going back to 3b656cf764^, just
alter the error report. Anyway, a start. Now I just need time to debug it...

Jan

> 
> /kashyap
> 
> On Tue, Jun 4, 2013 at 6:14 PM, Kashyap Chamarthy <kashyap.cv@gmail.com> wrote:
>> Heya,
>>
>> So, I invoked this in L1 with:
>> =======================
>> [test@foo kvm-unit-tests]$ time qemu-system-x86_64 -enable-kvm -device
>> pc-testdev -serial stdio -nographic -no-user-config -nodefaults
>> -device
>> isa-debug-exit,iobase=0xf4,iosize=0x4 -kernel ./x86/eventinj.flat |
>> tee /var/tmp/eventinj-test.txt
>> enabling apic
>> paging enabled
>> cr0 = 80010011
>> cr3 = 7fff000
>> cr4 = 20
>> Try to divide by 0
>> DE isr running divider is 0
>> Result is 150
>> DE exception: PASS
>> Try int 3
>> BP isr running
>> After int 3
>> BP exception: PASS
>> Try send vec 33 to itself
>> irq1 running
>> After vec 33 to itself
>> vec 33: PASS
>> Try int $33
>> irq1 running
>> After int $33
>> int $33: PASS
>> Try send vec 32 and 33 to itself
>> irq1 running
>> irq0 running
>> After vec 32 and 33 to itself
>> vec 32/33: PASS
>> Try send vec 32 and int $33
>> irq1 running
>> irq0 running
>> After vec 32 and int $33
>> vec 32/int $33: PASS
>> Try send vec 33 and 62 and mask one with TPR
>> irq1 running
>> After 33/62 TPR test
>> TPR: PASS
>> irq0 running
>> Try send NMI to itself
>> After NMI to itself
>> NMI: FAIL
>> Try int 33 with shadowed stack
>> irq1 running
>> After int 33 with shadowed stack
>> int 33 with shadowed stack: PASS
>>
>> summary: 9 tests, 1 failures
>>
>> real    0m0.647s
>> user    0m0.164s
>> sys     0m0.146s
>> [test@foo kvm-unit-tests]$
>> =======================
>>
>> Any hints on further debugging this ?
>>
>>
>> Other info:
>> --------------
>>
>> - L1's qemu-kvm CLI
>> =======================
>> # ps -ef | grep -i qemu
>> qemu      5455     1 94 Jun02 ?        1-07:14:29
>> /usr/bin/qemu-system-x86_64 -machine accel=kvm -name regular-guest -S
>> -machine pc-i440fx-1.4,accel=kvm,usb=off -cpu Haswell,+vmx -m 10240
>> -smp 4,sockets=4,cores=1,threads=1 -uuid
>> 4ed9ac0b-7f72-dfcf-68b3-e6fe2ac588b2 -nographic -no-user-config
>> -nodefaults -chardev
>> socket,id=charmonitor,path=/var/lib/libvirt/qemu/regular-guest.monitor,server,nowait
>> -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc
>> -no-shutdown -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2
>> -drive file=/home/test/vmimages/regular-guest.qcow2,if=none,id=drive-virtio-disk0,format=qcow2,cache=none
>> -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1
>> -netdev tap,fd=23,id=hostnet0,vhost=on,vhostfd=24 -device
>> virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:80:c1:34,bus=pci.0,addr=0x3
>> -chardev pty,id=charserial0 -device
>> isa-serial,chardev=charserial0,id=serial0 -device usb-tablet,id=input0
>> -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5
>> root     12255  5419  0 08:41 pts/2    00:00:00 grep --color=auto -i qemu
>> =======================
>>
>> - Setup details --
>> https://github.com/kashyapc/nvmx-haswell/blob/master/SETUP-nVMX.rst
>>
>> /kashyap


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