Re: [PATCH 4/4] test/avocado: test Linux boot up in x2APIC with userspace local APIC

["Alex Bennée" <alex.bennee@linaro.org>]

Bui Quang Minh <minhquangbui99@gmail.com> writes:

> Simple test to check Linux boot up in x2APIC with userspace local APIC and
> TCG accelerator.

These aren't really simple tests because they are booting up a whole
distro and on my system at least they timeout:

  ➜  ./tests/venv/bin/avocado run tests/avocado/tcg_x2apic.py 
  JOB ID     : 9347a29b02111cc865ab5485ed7e06ad932420a3
  JOB LOG    : /home/alex/avocado/job-results/job-2023-03-06T22.17-9347a29/job.log
   (1/2) tests/avocado/tcg_x2apic.py:TCGx2APIC.test_physical_x2apic: INTERRUPTED: Test interrupted by SIGTERM\nRunner error occurred: Timeout reached\nOriginal status: ERROR\n
  {'name': '1-tests/avocado/tcg_x2apic.py:TCGx2APIC.test_physical_x2apic', 'logdir': '/home/alex/avocado/job-results/job-2023-03-06T22.17-9347a29/test-results/1-tests_... (120
  .67 s)
   (2/2) tests/avocado/tcg_x2apic.py:TCGx2APIC.test_cluster_x2apic: INTERRUPTED: Test interrupted by SIGTERM\nRunner error occurred: Timeout reached\nOriginal status: ERROR\n{
  'name': '2-tests/avocado/tcg_x2apic.py:TCGx2APIC.test_cluster_x2apic', 'logdir': '/home/alex/avocado/job-results/job-2023-03-06T22.17-9347a29/test-results/2-tests_a... (120.
  66 s)
  RESULTS    : PASS 0 | ERROR 0 | FAIL 0 | SKIP 0 | WARN 0 | INTERRUPT 2 | CANCEL 0
  JOB TIME   : 241.63 s

Most of what this exercises is already covered by the boot_linux.py
tests which I would dearly like to deprecate the TCG versions for CI
because they burn so much CI time.

Ideally what I would like are specific directed tests that exercise the
full functionality of the various emulated APICs supported by QEMU
without the weight of a full distro boot.

Do the kvm-unit-test APIC tests count? Forcing TCG seems to fail a bunch
though:

✗  env QEMU=$HOME/lsrc/qemu.git/builds/all/qemu-system-x86_64 ACCEL=tcg ./run_tests.sh -g apic
FAIL apic-split 
PASS ioapic-split (19 tests)
FAIL x2apic 
FAIL xapic

It might be the kvm-unit-tests need a slight tweak to not enable
tsc-deadline for TCG only tests?

Failing that I would accept a kernel+initrd test the focused on
exercising the various APIC paths without the weight of a full distro.

<snip>

-- 
Alex Bennée
Virtualisation Tech Lead @ Linaro