Comment 6 for bug 1916230

PPA: https://launchpad.net/~ci-train-ppa-service/+archive/ubuntu/4471/+packages
MP: https://code.launchpad.net/~paelzer/ubuntu/+source/qemu/+git/qemu/+merge/398447

Build log:

[1023/8456] cc -Ilibqemu-s390x-softmmu.fa.p -I. -I../.. -Itarget/s390x -I../../target/s390x -Iqapi -Itrace -Iui -Iui/shader -I/usr/include/pixman-1 -I/usr/include/glib-2.0 -I/usr/lib/s390x-linux-gnu/glib-2.0/include -fdiagnostics-color=auto -pipe -Wall -Winvalid-pch -std=gnu99 -O2 -g -U_FORTIFY_SOURCE -m64 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wundef -Wwrite-strings -Wmissing-prototypes -fno-strict-aliasing -fno-common -fwrapv -g -O2 -ffile-prefix-map=/<<BUILDDIR>>/qemu-5.2+dfsg=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -Wold-style-declaration -Wold-style-definition -Wtype-limits -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers -Wempty-body -Wnested-externs -Wendif-labels -Wexpansion-to-defined -Wno-missing-include-dirs -Wno-shift-negative-value -Wno-psabi -fstack-protector-strong -isystem /<<BUILDDIR>>/qemu-5.2+dfsg/linux-headers -isystem linux-headers -iquote /<<BUILDDIR>>/qemu-5.2+dfsg/tcg/s390 -iquote . -iquote /<<BUILDDIR>>/qemu-5.2+dfsg -iquote /<<BUILDDIR>>/qemu-5.2+dfsg/accel/tcg -iquote /<<BUILDDIR>>/qemu-5.2+dfsg/include -iquote /<<BUILDDIR>>/qemu-5.2+dfsg/disas/libvixl -pthread -fPIE -isystem../../linux-headers -isystemlinux-headers -DNEED_CPU_H '-DCONFIG_TARGET="s390x-softmmu-config-target.h"' '-DCONFIG_DEVICES="s390x-softmmu-config-devices.h"' -MD -MQ libqemu-s390x-softmmu.fa.p/hw_s390x_virtio-ccw-9p.c.o -MF libqemu-s390x-softmmu.fa.p/hw_s390x_virtio-ccw-9p.c.o.d -o libqemu-s390x-softmmu.fa.p/hw_s390x_virtio-ccw-9p.c.o -c ../../hw/s390x/virtio-ccw-9p.c

LGTM, If you want feel free to check out the MP or the PPA in advance to the final upload.