kbuild: fix asm-offset generation to work with clang

KBuild abuses the asm statement to write to a file and
clang chokes about these invalid asm statements. Hack it
even more by fooling this is actu

kbuild: fix asm-offset generation to work with clang

KBuild abuses the asm statement to write to a file and
clang chokes about these invalid asm statements. Hack it
even more by fooling this is actual valid asm code.

This is an adaption of the Linux kernel commit cf0c3e68aa81f992b0
which in turn is based on a patch for the U-Boot:
http://patchwork.ozlabs.org/patch/375026/

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20201001072234.143703-5-thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Tested-by: Andrew Jones <drjones@redhat.com>

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arm64: initial drop

This is the initial drop of the arm64 test framework and a first test
that just checks that setup completed (a selftest). kvm isn't needed
to run this test unless testing with sm

arm64: initial drop

This is the initial drop of the arm64 test framework and a first test
that just checks that setup completed (a selftest). kvm isn't needed
to run this test unless testing with smp > 1.

Try it out with
yum install gcc-aarch64-linux-gnu
./configure --cross-prefix=aarch64-linux-gnu- --arch=arm64
make
QEMU=[qemu with aarch64, mach-virt, and chr-testdev] ./run_tests.sh

Signed-off-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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