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ARM QEMU: Unknown syscall 397
QEMU is reporting
```
Unknown syscall 397
```
(statx if I read tables right) when used via flatpak for ARM images on x86_64. This has been reproduced on Fedora and Gentoo.
To reproduce:
- get flatpak KDE 5.12 for arm:
flatpak install --user org.kde.Sdk/arm/5.12 org.kde.Platform/arm/5.12
- run qmake inside Sdk:
QEMU_STRACE=1 flatpak run --filesystem=host --command=qmake org.kde.Sdk/arm/5.12 .
You will get a host of messages with unknown syscall. In practice, qmake will fail to find .pro files if you have them in that folder and libraries in the system.
As far as I understand, Flatpak images are built on AARCH64 hardware.
My config on Gentoo:
kernel: 4.19.86-gentoo x86_64
app-emulation/qemu: ~4.2.0-r1 , same with 4.0.0
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