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Re: [Qemu-devel] [PATCH v2 for-2.11 0/2] Improvements for the pxe tester
From: |
Cornelia Huck |
Subject: |
Re: [Qemu-devel] [PATCH v2 for-2.11 0/2] Improvements for the pxe tester |
Date: |
Fri, 11 Aug 2017 11:49:22 +0200 |
On Fri, 11 Aug 2017 07:57:54 +0200
Thomas Huth <address@hidden> wrote:
> The first patch improves the buffer handling in the pxe tester a
> little bit by allocating a separate buffer on the heap for each
> architecture. This also gets rid of the huge pre-initialized
> array in the tester, shrinking the size of the executable by
> half of a megabyte!
> The second patch adds s390x support to the pxe tester. Starting
> with QEMU 2.10, the guest firmware on s390x can now net-boot via
> TFTP, too, so we can automatically test this code in the pxe tester.
>
> v2: Adressed Cornelia's review feedback from the first version, e.g.:
> - Use g_malloc0() instead of g_malloc()
> - Use sizeof with parentheses
>
> Thomas Huth (2):
> tests/boot-sector: Do not overwrite the x86 buffer on other
> architectures
> tests/pxe: Check virtio-net-ccw on s390x
>
> tests/Makefile.include | 1 +
> tests/boot-sector.c | 61
> +++++++++++++++++++++++++++++++++++++-------------
> tests/pxe-test.c | 7 ++++++
> 3 files changed, 54 insertions(+), 15 deletions(-)
>
Haven't reviewed the updates yet, but tried it out (on my laptop and on
a z/VM guest). Laptop went fine; on the z/VM guest, I forgot to turn on
vm.allocate_pgste at first:
TEST: tests/pxe-test... (pid=56084)
/s390x/pxe/virtio-ccw:
ioctl(KVM_CREATE_VM) failed: 22 Invalid argument
Host kernel setup problem detected. Please verify:
- for kernels supporting the switch_amode or user_mode parameters, whether
user space is running in primary address space
- for kernels supporting the vm.allocate_pgste sysctl, whether it is enabled
qemu-system-s390x: failed to initialize KVM: Invalid argument
qemu-system-s390x: Back to tcg accelerator
OK
PASS: tests/pxe-test
It does the correct fallback (the need for allocate_pgste will go away
with future kernels), so this is fine. However, it prompted me to test
with --disable-tcg:
TEST: tests/boot-serial-test... (pid=60499)
/s390x/boot-serial/s390-ccw-virtio:
qemu-system-s390x: -machine accel=tcg: No accelerator found
socket_accept failed: Resource temporarily unavailable
**
ERROR:/root/git/qemu/tests/libqtest.c:212:qtest_init_without_qmp_handshake:
assertion failed: (s->fd >= 0 && s->qmp_fd >= 0)
FAIL
GTester: last random seed: R02S83c8a1860bbd8c2658647407c7070b7e
(pid=60503)
FAIL: tests/boot-serial-test
There are probably more tests that rely on tcg always being available,
which is no longer true. (Also, the boot-serial test should probably
check if qemu even started rather than run into in a timeout.)
[Your patches are fine, but I think we really need to consider tests
and accelerators.]
Re: [Qemu-devel] [PATCH v2 for-2.11 0/2] Improvements for the pxe tester, Cornelia Huck, 2017/08/15