arm64: implement spinlocks

We put this off, as it wasn't necessary without smp. Now it
is. Only need to do this for arm64, as we've already done it
already for arm.

Signed-off-by: Andrew Jones <drj

arm64: implement spinlocks

We put this off, as it wasn't necessary without smp. Now it
is. Only need to do this for arm64, as we've already done it
already for arm.

Signed-off-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@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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