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Date: Fri, 26 Feb 2016 15:02:15 +0100
From: Andrew Jones <drjones@redhat.com>
Message-ID: <20160226140215.4wpdvt3xgnh2s6s7@hawk.localdomain>
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Subject: Re: [Qemu-devel] [RFC 07/11] arm/run: allow aarch64 to start arm
	binaries
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To: Alex =?iso-8859-1?Q?Benn=E9e?= <alex.bennee@linaro.org>
Cc: mttcg@greensocs.com, peter.maydell@linaro.org, claudio.fontana@huawei.com, a.spyridakis@virtualopensystems.com, mark.burton@greensocs.com, qemu-devel@nongnu.org, will.deacon@arm.com, a.rigo@virtualopensystems.com, crosthwaitepeter@gmail.com, pbonzini@redhat.com, rth@twiddle.net, aurelien@aurel32.net, fred.konrad@greensocs.com

On Fri, Feb 26, 2016 at 01:15:29PM +0000, Alex Benn=E9e wrote:
> AArch64 hosts can happily run AArch32 binaries. We just need to ensure
> that we use "cpu host,aarch64=3Doff" when specifying the CPU type.
>=20
> Signed-off-by: Alex Benn=E9e <alex.bennee@linaro.org>
> ---
>  arm/run | 10 +++++++++-
>  1 file changed, 9 insertions(+), 1 deletion(-)
>=20
> diff --git a/arm/run b/arm/run
> index 0eaf23a..f1a6b7d 100755
> --- a/arm/run
> +++ b/arm/run
> @@ -38,7 +38,15 @@ if [ "$HOST" =3D "aarch64" ] && [ "$ACCEL" =3D "kvm"=
 ]; then
>  	fi
>  fi
> =20
> -qemu=3D"${QEMU:-qemu-system-$ARCH_NAME}"
> +if [ "$ARCH" =3D "arm" ] && [ "$HOST" =3D "aarch64" ]; then
> +    qemu=3D"${QEMU:-qemu-system-$HOST}"
> +    if [ "$ACCEL" =3D "kvm" ]; then
> +	processor=3D"host,aarch64=3Doff"
> +    fi
> +else
> +	qemu=3D"${QEMU:-qemu-system-$ARCH_NAME}"
> +fi

We've got 3382e7795 "arm/run: allow tests to run in AArch32 mode"
already, so I this patch should no longer be necessary.

Thanks,
drew


> +
>  qpath=3D$(which $qemu 2>/dev/null)
> =20
>  if [ -z "$qpath" ]; then
> --=20
> 2.7.1
>=20