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[v5,0/3] tests/qtest/libqos: add DMA support for writing and reading fw_cfg files

Message ID 20250110104619.267564-1-anisinha@redhat.com (mailing list archive)
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Series tests/qtest/libqos: add DMA support for writing and reading fw_cfg files | expand

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Ani Sinha Jan. 10, 2025, 10:46 a.m. UTC 
This patchset enables DMA interface support for writing fw-cfg files in
libqtest. The first patch is just a code refactoring so that fw-cfg
directory parsing can be part of a separate helper function.
The second patch is the actual patch that introduces two new apis for
writing and reading fw-cfg files using DMA interface. The apis are
tested by writing a new basic qtest for vmcoreinfo device in patch 3.

$ MALLOC_PERTURB_=255  QTEST_QEMU_BINARY=./qemu-system-x86_64  /workspace/qemu-ani/build/tests/qtest/vmcoreinfo-test
TAP version 13
# random seed: R02S33ea0ae4568aae69a6191a97e6ea37fc
1..1
# Start of x86_64 tests
# Start of vmcoreinfo tests
# starting QEMU: exec ./qemu-system-x86_64 -qtest unix:/tmp/qtest-267380.sock -qtest-log /dev/null -chardev socket,path=/tmp/qtest-267380.qmp,id=char0 -mon chardev=char0,mode=control -display none -audio none -device vmcoreinfo -accel qtest
ok 1 /x86_64/vmcoreinfo/basic-write
# End of vmcoreinfo tests
# End of x86_64 tests

cc: kraxel@redhat.com
cc: farosas@suse.de
cc: lvivier@redhat.com
cc: pbonzini@redhat.com
cc: armbru@redhat.com
cc: philmd@linaro.org
cc: berrange@redhat.com
cc: qemu-devel@nongnu.org
cc: farosas@suse.de

changelog:
v3: first working version of the patch.
v4: refactoring without any new changes put into a new patch.
v5: a new qtest added to exercize the two new write and read apis.

all along, other review feedbacks has been taken into account.

Ani Sinha (3):
  libqos/fw_cfg: refactor file directory iteraton to make it more
    reusable
  tests/qtest/libqos: add DMA support for writing and reading fw_cfg
    files
  tests/qtest/vmcoreinfo: add a unit test to exercize basic vmcoreinfo
    function

 MAINTAINERS                   |   2 +
 tests/qtest/libqos/fw_cfg.c   | 204 ++++++++++++++++++++++++++++++----
 tests/qtest/libqos/fw_cfg.h   |   6 +-
 tests/qtest/meson.build       |   1 +
 tests/qtest/vmcoreinfo-test.c |  90 +++++++++++++++
 5 files changed, 280 insertions(+), 23 deletions(-)
 create mode 100644 tests/qtest/vmcoreinfo-test.c