I'm now looking into kvm-unit-tests and encounted with some problems.

You should add kvm maillinglist too.

-----邮件原件-----
发件人: Jinjian (Ken)
发送时间: 2015年8月25日 21:42
收件人: [email protected]; [email protected]
抄送: Huangpeng (Peter); Gonglei (Arei); Zhanghailiang
主题: I'm now looking into kvm-unit-tests and encounted with some problems.

Hi all:
I'm now looking into kvm-unit-tests and encounted with some problems.

1. when I run run_test.sh, it reported "exec: {config_fd}: not found". how and where to define it?

2. all tests run with -smp 2(or 3) hang.
for example, run apic unittest, command as follows:
qemu-kvm --enable-kvm -device pc-testdev -device
isa-debug-exit,iobase=0xf4,iosize=0x4 -serial stdio -device pci-testdev -kernel x86/apic.flat -smp 2 -vnc none
result: enter into an endless loop
the related codes are:
x86/apic.c

    test_sti_nmi()
          on_cpu_async(1, sti_loop, 0);

    static void sti_loop(void *ignore)
    {
       unsigned k = 0;

       while (sti_loop_active) {
         sti_nop((char *)(ulong)((k++ * 4096) % (128 * 1024 * 1024)));
       }
    }

3. s3 kvm-unit-test hang
run s3 unittest, command as follows:
qemu-kvm --enable-kvm -device pc-testdev -device isa-debug-exit,iobase=0xf4,iosize=0x4 -serial stdio -device pci-testdev -kernel x86/s3.flat -vnc none s3 hang at resume event
logs:
RSDP is at f62c0
RSDT is at 7fe16a9
FADT is at 7fe0bda
FACS is at 7fe0000
resume vector addr is 7fe000c
copy resume code from 400350

4.qemu exit and fail even after the problematic code is commented, when we run emulate unittest. run emulate unittest,command as follows:
qemu-kvm --enable-kvm -device pc-testdev -device
isa-debug-exit,iobase=0xf4,iosize=0x4 -serial stdio -device pci-testdev -kernel x86/emulator.flat -vnc none
result: qemu exit when do test_muldiv
logs:
PASS: imul rax, mem, imm
unhandled cpu excecption 8

If The code which cause qemu exit is commented, the test also fail logs:
FAIL: mov null, %ss

Question:
What's the cause of the problem at your view? looking forward for your reply.

Thank you in advance.

Hi all:
I'm now looking into kvm-unit-tests and encounted with some problems.

1. when I run run_test.sh, it reported "exec: {config_fd}: not found". how and where to define it?

2. all tests run with -smp 2(or 3) hang.
for example, run apic unittest, command as follows:
qemu-kvm --enable-kvm -device pc-testdev -device isa-debug-exit,iobase=0xf4,iosize=0x4 -serial stdio -device pci-testdev -kernel x86/apic.flat -smp 2 -vnc none
result: enter into an endless loop
the related codes are:
x86/apic.c
test_sti_nmi()

         on_cpu_async(1, sti_loop, 0);

   static void sti_loop(void *ignore)
   {
      unsigned k = 0;

      while (sti_loop_active) {
        sti_nop((char *)(ulong)((k++ * 4096) % (128 * 1024 * 1024)));
      }

}

3. s3 kvm-unit-test hang
run s3 unittest, command as follows:
qemu-kvm --enable-kvm -device pc-testdev -device isa-debug-exit,iobase=0xf4,iosize=0x4 -serial stdio -device pci-testdev -kernel x86/s3.flat -vnc none
s3 hang at resume event
logs:
RSDP is at f62c0
RSDT is at 7fe16a9
FADT is at 7fe0bda
FACS is at 7fe0000
resume vector addr is 7fe000c
copy resume code from 400350

4.qemu exit and fail even after the problematic code is commented, when we run emulate unittest.
run emulate unittest,command as follows:
qemu-kvm --enable-kvm -device pc-testdev -device isa-debug-exit,iobase=0xf4,iosize=0x4 -serial stdio -device pci-testdev -kernel x86/emulator.flat -vnc none
result: qemu exit when do test_muldiv
logs:
PASS: imul rax, mem, imm
unhandled cpu excecption 8

If The code which cause qemu exit is commented, the test also fail logs:
FAIL: mov null, %ss

Question:
What's the cause of the problem at your view? looking forward for your reply.

Hello.

Quoted 5 lines

Hi all:
I'm now looking into kvm-unit-tests and encounted with some problems.

1. when I run run_test.sh, it reported "exec: {config_fd}: not found". how and where to define it?

Interesting, I don't know where this is coming from, maybe your shell?

Quoted 50 lines

2. all tests run with -smp 2(or 3) hang.
for example, run apic unittest, command as follows:
qemu-kvm --enable-kvm -device pc-testdev -device isa-debug-exit,iobase=0xf4,iosize=0x4 -serial stdio -device pci-testdev -kernel x86/apic.flat -smp 2 -vnc none
result: enter into an endless loop
the related codes are:
x86/apic.c

    test_sti_nmi()
          on_cpu_async(1, sti_loop, 0);

    static void sti_loop(void *ignore)
    {
       unsigned k = 0;

       while (sti_loop_active) {
         sti_nop((char *)(ulong)((k++ * 4096) % (128 * 1024 * 1024)));
       }
    }

3. s3 kvm-unit-test hang
run s3 unittest, command as follows:
qemu-kvm --enable-kvm -device pc-testdev -device isa-debug-exit,iobase=0xf4,iosize=0x4 -serial stdio -device pci-testdev -kernel x86/s3.flat -vnc none
s3 hang at resume event
logs:
RSDP is at f62c0
RSDT is at 7fe16a9
FADT is at 7fe0bda
FACS is at 7fe0000
resume vector addr is 7fe000c
copy resume code from 400350

4.qemu exit and fail even after the problematic code is commented, when we run emulate unittest.
run emulate unittest,command as follows:
qemu-kvm --enable-kvm -device pc-testdev -device isa-debug-exit,iobase=0xf4,iosize=0x4 -serial stdio -device pci-testdev -kernel x86/emulator.flat -vnc none
result: qemu exit when do test_muldiv
logs:
PASS: imul rax, mem, imm
unhandled cpu excecption 8

If The code which cause qemu exit is commented, the test also fail logs:
FAIL: mov null, %ss

Quoted 2 lines

Question:
What's the cause of the problem at your view? looking forward for your reply.

None of the commands fail for me on an x86_64 machine with QEMU 2.4.50 on Linux 4.1.5-200.fc22.x86_64 with kvm-unit-tests git-a5d12b9

I think a good next step would be to let us know your setup...

Thanks,
Levente

.

Hi, I found my code is old and I git the latest code from
<https://git.kernel.org/pub/scm/virt/kvm/kvm-unit-tests.git>https://git.kernel.org/pub/scm/virt/kvm/kvm-unit-tests.git,
some problems are solved but one.

when I run emulate unittest, it failed.

command:
qemu-kvm --enable-kvm -device pc-testdev -device isa-debug-exit,iobase=0xf4,iosize=0x4 -serial stdio -device pci-testdev -kernel x86/emulator.flat -vnc none

logs:
FAIL: mov null, %ss

Quoted 7 lines · Guoyanjuan

Hi, I found my code is old and I git the latest code from

<https://git.kernel.org/pub/scm/virt/kvm/kvm-unit-tests.git>https://git.kernel.org/pub/scm/virt/kvm/kvm-unit-tests.git,
some problems are solved but one.

when I run emulate unittest, it failed.

Quoted 7 lines

command:
qemu-kvm --enable-kvm -device pc-testdev -device isa-debug-exit,iobase=0xf4,iosize=0x4 -serial stdio -device pci-testdev -kernel x86/emulator.flat -vnc none

logs:
FAIL: mov null, %ss

Lucas Meneghel Rodrigues also reproduced this, it seems to be processor dependent. I haven't debugged it yet because it doesn't reproduce on the two systems I've tested on (Ivy Bridge i7 and Haswell Xeon E5).

Can you please also try loading the kvm-intel module with the "unrestricted_guest=0" parameter, and see if it also reproduce?

It might be a processor bug too.

Paolo
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