[PATCH] ARC: align child stack in clone

[Pavel Kozlov]

> LGTM, although I can't really test it since the Synopsys qemu tree does not
> have qemu-user support [1].

Thank you for the review. I've checked this patch on QEMU with Linux system
and on the ARC HSDK board.
Also, I can say that it is possible to run ARC binaries on QEMU [1] in
user mode. Currently not all instructions are supported in ARC QEMU and it
is recommended to build binaries with extra -mcpu=archs compiler option,
to reduce instruction set. Maybe this [2] will be also useful.
It will be great to have this patch in coming 2.37.

[1]
https://github.com/foss-for-synopsys-dwc-arc-processors/qemu
[2]
https://github.com/foss-for-synopsys-dwc-arc-processors/glibc/wiki/Glibc-test-suite-for-a-target-without-native-GNU-toolchain#glibc-test-suite-execution-with-qemu-user-mode-emulation

--
Pavel