[PATCH v2 0/6] tests/boot_linux_console: add extra boot acceptance tests

[Liam Merwick]

Add acceptance tests for the microvm machine class, PVH, and the
new qboot BIOS.

In the case of the test to boot an uncompressed kernel there didn't
seem to be any suitable uncompressed kernel on 
https://archives.fedoraproject.org/
(there is a vmlinux in kernel-debuginfo but that RPM is 575M and
caused timeouts when populating the Avocado cache when first run)
so I chose an RPM with kernels for Kata that is 14M.
(there was a discussion in [1] regarding testing PVH boot but it focussed
more around building a vmlinux binary during testing).

[ What prompted these patches was the discovery that a 'pc' guest booting an
uncompressed kernel (PVH) with a PCI netdev hangs (before we even get guest
console output) when bios-microvm.bin (qboot) is supplied via -bios
(no issue when using 'q35' or 'microvm' machine classes).

E.g. adding the following line to test_x86_64_pc_qboot_pvh() is enough to
trigger a guest hang during startup:
self.vm.add_args('-netdev', 'user,id=n1', '-device', 'virtio-net-pci,netdev=n1')

I bisected that issue to 176d2cda0dee [2] in 4.1 but haven't worked out yet
how/why the "die-id" changes impact the qboot/PVH combination
(the boot succeeds with any subset of those boot variables).

Is booting the 'pc' machine class with bios-microvm.bin something that QEMU
officially supports or is qboot intended for microvm only? ]

Each test added here adds about 1.5s to the overall runtime.
I have run them through the Travis QEMU CI [3] and those acceptance tests pass.

v1 -> v2
Removed unnecessary qboot test for microvm in Patches 2 and 5 [Stefano]
Added SeaBIOS test for microvm to Patch2
Fix path concatenation in Patch4 to use os.path for filesystem paths [Wanier]
Added Patch6 to fix extract_from_deb() to use os.path for filesystem paths
Used dictionary to store kernel info in Patch5 [Philippe]
Dropped patch with typo fix that has been queued separately
Added Stefano's R-b to the patches which have not significantly changed.

[1] https://patchew.org/QEMU/address@hidden/
[2] 176d2cda0dee ("i386/cpu: Consolidate die-id validity in smp context")
[3] https://travis-ci.org/merwick/qemu/builds/645487393
[4] 
https://github.com/wainersm/qemu/commit/8f705e98df90b436b0f4946331d441309c437f7b


Liam Merwick (6):
  tests/boot_linux_console: add microvm acceptance test
  tests/boot_linux_console: add BIOS acceptance test
  travis.yml: install rpm2cpio for acceptance tests
  tests/boot_linux_console: add extract_from_rpm method
  tests/boot_linux_console: add PVH acceptance tests
  tests/boot_linux_console: use os.path for filesystem paths

 .travis.yml                            |   1 +
 tests/acceptance/boot_linux_console.py | 114 ++++++++++++++++++++++++++++++---
 2 files changed, 106 insertions(+), 9 deletions(-)

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1.8.3.1