Re: [PULL v3 49/81] acpi: pc: vga: use AcpiDevAmlIf interface to build VGA device descriptors

[B <shentey@gmail.com>]

Am 7. November 2022 22:28:31 UTC schrieb "Michael S. Tsirkin" <mst@redhat.com>:
>On Mon, Nov 07, 2022 at 10:07:52PM +0000, Bernhard Beschow wrote:
>> Am 7. November 2022 13:00:36 UTC schrieb "Michael S. Tsirkin" <mst@redhat.com>:
>> >On Mon, Nov 07, 2022 at 06:16:25PM +0530, Ani Sinha wrote:
>> >> On Mon, Nov 7, 2022 at 6:03 PM Michael S. Tsirkin <mst@redhat.com> wrote:
>> >> >
>> >> > On Sun, Nov 06, 2022 at 10:16:41PM +0100, Bernhard Beschow wrote:
>> >> > >
>> >> > >
>> >> > > On Sat, Nov 5, 2022 at 6:45 PM Michael S. Tsirkin <mst@redhat.com> wrote:
>> >> > >
>> >> > >     From: Igor Mammedov <imammedo@redhat.com>
>> >> > >
>> >> > >     Signed-off-by: Igor Mammedov <imammedo@redhat.com>
>> >> > >     Message-Id: <20221017102146.2254096-2-imammedo@redhat.com>
>> >> > >     Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
>> >> > >     Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
>> >> > >     NB: we do not expect any functional change in
>> >> > >     any ACPI tables with this change. It's only a refactoring.
>> >> > >
>> >> > >     Reviewed-by: Ani Sinha <ani@anisinha.ca>
>> >> > >     ---
>> >> > >      hw/display/vga_int.h       |  2 ++
>> >> > >      hw/display/acpi-vga-stub.c |  7 +++++++
>> >> > >      hw/display/acpi-vga.c      | 26 ++++++++++++++++++++++++++
>> >> > >      hw/display/vga-pci.c       |  4 ++++
>> >> > >      hw/i386/acpi-build.c       | 26 +-------------------------
>> >> > >      hw/display/meson.build     | 17 +++++++++++++++++
>> >> > >      6 files changed, 57 insertions(+), 25 deletions(-)
>> >> > >      create mode 100644 hw/display/acpi-vga-stub.c
>> >> > >      create mode 100644 hw/display/acpi-vga.c
>> >> > >
>> >> > >
>> >> > > With this "qemu:qtest+qtest-hppa / qtest-hppa/display-vga-test" fails due to
>> >> > > the symbol "aml_return" being undefined:
>> >> > >
>> >> > > # starting QEMU: exec ./qemu-system-hppa -qtest unix:/tmp/qtest-515650.sock
>> >> > > -qtest-log /dev/null -chardev socket,path=/tmp/qtest-515650.qmp,id=char0 -mon
>> >> > > chardev=char0,mode=control -display none -vga none -device virtio-vga -accel
>> >> > > qtest
>> >> > > ----------------------------------- stderr -----------------------------------
>> >> > > Failed to open module: qemu/build/qemu-bundle/usr/lib/qemu/
>> >> > > hw-display-virtio-vga.so: undefined symbol: aml_return
>> >> > > qemu-system-hppa: -device virtio-vga: 'virtio-vga' is not a valid device model
>> >> > > name
>> >> > > Broken pipe
>> >> > > ../src/tests/qtest/libqtest.c:179: kill_qemu() tried to terminate QEMU process
>> >> > > but encountered exit status 1 (expected 0)
>> >> > >
>> >> > > (test program exited with status code -6)
>> >> > >
>> >> > > Best regards,
>> >> > > Bernhard
>> >> >
>> >> > It's unfortunate that it doesn't reproduce for me :(
>> >> 
>> >> To reproduce:
>> >> 
>> >> - docker pull registry.gitlab.com/qemu-project/qemu/qemu/centos8:latest
>> >> - configure line:
>> >> 
>> >> ../configure --enable-werror --disable-docs --disable-nettle
>> >> --enable-gcrypt --enable-fdt=system --enable-modules
>> >> --enable-trace-backends=dtrace --enable-docs --enable-vfio-user-server
>> >> --target-list="ppc64-softmmu or1k-softmmu s390x-softmmu x86_64-softmmu
>> >> rx-softmmu sh4-softmmu nios2-softmmu"
>> >
>> >
>> >I suspect --enable-modules is the difference.
>> 
>> Indeed, I'm building with --enable-modules and got the undefined symbol.
>> 
>> Perhaps we could use the -Wl,--no-undefined linker option when building with modules to catch these errors at link time already?
>> 
>> Best regards,
>> Bernhard
>
>I don't see how it can work but sure, send a patch :)

Sounds like circular dependencies. Don't count on me any time soon then ;)

Best regards,
Bernhard
>
>> >
>> >> - # make
>> >> - # QTEST_QEMU_BINARY=./qemu-system-or1k  ./tests/qtest/qos-test
>> >> failed to open module:
>> >> /build/qemu/qemu/build/qemu-bundle/usr/local/lib64/qemu/hw-display-virtio-vga.so:
>> >> undefined symbol: aml_return
>> >> qemu-system-or1k: ../util/error.c:59: error_setv: Assertion `*errp ==
>> >> NULL' failed.
>> >> Broken pipe
>> >> ../tests/qtest/libqtest.c:188: kill_qemu() detected QEMU death from
>> >> signal 6 (Aborted) (core dumped)
>> >> Aborted (core dumped)
>> >
>