[PATCH v4 0/2] automation: qemu32 smoke test

[PATCH v4 0/2] automation: qemu32 smoke test

[Stefano Stabellini]

Hi all,

This small series adds a simple Xen + Dom0 boot arm32 test to gitlab-ci
using QEMU, similar to the existing tests for arm64 and x86.

Cheers,

Stefano

Stefano Stabellini (2):
      gitlab-ci: add qemu-system-arm to the existing tests-artifacts container
      gitlab-ci: add an ARM32 qemu-based smoke test

 automation/gitlab-ci/build.yaml                    | 14 +++-
 automation/gitlab-ci/test.yaml                     | 27 +++++++-
 automation/scripts/qemu-smoke-arm32.sh             | 81 ++++++++++++++++++++++
 ...arm64v8.dockerfile => 6.0.0-arm64v8.dockerfile} |  5 +-
 4 files changed, 121 insertions(+), 6 deletions(-)
 create mode 100755 automation/scripts/qemu-smoke-arm32.sh
 rename automation/tests-artifacts/qemu-system-aarch64/{5.2.0-arm64v8.dockerfile => 6.0.0-arm64v8.dockerfile} (95%)

[PATCH v4 1/2] gitlab-ci: add qemu-system-arm to the existing tests-artifacts container

[Stefano Stabellini]

From: Stefano Stabellini <stefano.stabellini@xilinx.com>

Add qemu-system-arm to the existing test-artifacts qemu container (which
doesn't get build for every iteration but only updated once in a while.)

With qemu-system-arm available, we'll be able to run ARM32 tests.

This patch also bumps the QEMU version to v6.0.0 for both arm32 and
arm64 (the test-artifacts container is one, shared for both).

Signed-off-by: Stefano Stabellini <stefano.stabellini@xilinx.com>
Reviewed-by: Anthony PERARD <anthony.perard@citrix.com>
---
 automation/gitlab-ci/build.yaml                    | 14 ++++++++++++--
 automation/gitlab-ci/test.yaml                     |  4 ++--
 ...arm64v8.dockerfile => 6.0.0-arm64v8.dockerfile} |  5 +++--
 3 files changed, 17 insertions(+), 6 deletions(-)
 rename automation/tests-artifacts/qemu-system-aarch64/{5.2.0-arm64v8.dockerfile => 6.0.0-arm64v8.dockerfile} (95%)

diff --git a/automation/gitlab-ci/build.yaml b/automation/gitlab-ci/build.yaml
index cc36428cf5..72f2a317ac 100644
--- a/automation/gitlab-ci/build.yaml
+++ b/automation/gitlab-ci/build.yaml
@@ -591,9 +591,9 @@ kernel-5.9.9-arm64-export:
   tags:
     - arm64
 
-qemu-system-aarch64-5.2.0-arm64-export:
+qemu-system-aarch64-6.0.0-arm64-export:
   stage: build
-  image: registry.gitlab.com/xen-project/xen/tests-artifacts/qemu-system-aarch64:5.2.0-arm64v8
+  image: registry.gitlab.com/xen-project/xen/tests-artifacts/qemu-system-aarch64:6.0.0-arm64v8
   script:
     - mkdir binaries && cp /qemu-system-aarch64 binaries/qemu-system-aarch64
   artifacts:
@@ -602,6 +602,16 @@ qemu-system-aarch64-5.2.0-arm64-export:
   tags:
     - arm64
 
+qemu-system-aarch64-6.0.0-arm32-export:
+  stage: build
+  image: registry.gitlab.com/xen-project/xen/tests-artifacts/qemu-system-aarch64:6.0.0-arm64v8
+  script:
+    - mkdir binaries && cp /qemu-system-arm binaries/qemu-system-arm
+  artifacts:
+    paths:
+      - binaries/qemu-system-arm
+  tags:
+    - arm64
 
 # x86_64 test artifacts
 
diff --git a/automation/gitlab-ci/test.yaml b/automation/gitlab-ci/test.yaml
index 47e8704df3..ec2a2e1607 100644
--- a/automation/gitlab-ci/test.yaml
+++ b/automation/gitlab-ci/test.yaml
@@ -33,7 +33,7 @@ qemu-alpine-arm64-gcc:
     - alpine-3.12-gcc-arm64
     - alpine-3.12-arm64-rootfs-export
     - kernel-5.9.9-arm64-export
-    - qemu-system-aarch64-5.2.0-arm64-export
+    - qemu-system-aarch64-6.0.0-arm64-export
   artifacts:
     paths:
       - smoke.serial
@@ -81,7 +81,7 @@ qemu-smoke-arm64-gcc:
   dependencies:
     - debian-unstable-gcc-arm64
     - kernel-5.9.9-arm64-export
-    - qemu-system-aarch64-5.2.0-arm64-export
+    - qemu-system-aarch64-6.0.0-arm64-export
   artifacts:
     paths:
       - smoke.serial
diff --git a/automation/tests-artifacts/qemu-system-aarch64/5.2.0-arm64v8.dockerfile b/automation/tests-artifacts/qemu-system-aarch64/6.0.0-arm64v8.dockerfile
similarity index 95%
rename from automation/tests-artifacts/qemu-system-aarch64/5.2.0-arm64v8.dockerfile
rename to automation/tests-artifacts/qemu-system-aarch64/6.0.0-arm64v8.dockerfile
index e105a1c636..793432d40b 100644
--- a/automation/tests-artifacts/qemu-system-aarch64/5.2.0-arm64v8.dockerfile
+++ b/automation/tests-artifacts/qemu-system-aarch64/6.0.0-arm64v8.dockerfile
@@ -3,7 +3,7 @@ LABEL maintainer.name="The Xen Project" \
       maintainer.email="xen-devel@lists.xenproject.org"
 
 ENV DEBIAN_FRONTEND=noninteractive
-ENV QEMU_VERSION=5.2.0
+ENV QEMU_VERSION=6.0.0
 ENV USER root
 
 RUN mkdir /build
@@ -25,7 +25,7 @@ RUN apt-get update && \
     tar xvJf qemu-"$QEMU_VERSION".tar.xz && \
     cd qemu-"$QEMU_VERSION" && \
     ./configure                \
-        --target-list=aarch64-softmmu \
+        --target-list=arm-softmmu,aarch64-softmmu \
         --enable-system        \
         --disable-blobs        \
         --disable-bsd-user     \
@@ -68,6 +68,7 @@ RUN apt-get update && \
     && \
     make -j$(nproc) && \
     cp ./build/qemu-system-aarch64 / && \
+    cp ./build/qemu-system-arm / && \
     cd /build && \
     rm -rf qemu-"$QEMU_VERSION"* && \
     apt-get autoremove -y && \
-- 
2.25.1

[PATCH v4 2/2] gitlab-ci: add an ARM32 qemu-based smoke test

[Stefano Stabellini]

Add a minimal ARM32 smoke test based on qemu-system-arm, as provided by
the test-artifacts qemu container. The minimal test simply boots Xen
(built from previous build stages) and Dom0.

The test needs a working kernel and minimal initrd for dom0. Instead of
building our own kernel and initrd, which would mean maintaining one or
two more builting scripts under automation/, we borrow a kernel and
initrd from distros.

For the kernel we pick the Debian Bullseye kernel, which has everything
we need already built-in. However, we cannot use the Debian Bullseye
initrd because it is 22MB and the large size causes QEMU to core dump.

Instead, use the tiny busybox-based rootfs provided by Alpine Linux,
which is really minimal: just 2.5MB. Note that we cannot use the Alpine
Linux kernel because that doesn't boot on Xen.

Signed-off-by: Stefano Stabellini <stefano.stabellini@xilinx.com>
---
Changes in v4:
- improve commit message
- use Debian Bullseye kernel
- use Alpine Linux initrd
---
 automation/gitlab-ci/test.yaml         | 23 ++++++++
 automation/scripts/qemu-smoke-arm32.sh | 81 ++++++++++++++++++++++++++
 2 files changed, 104 insertions(+)
 create mode 100755 automation/scripts/qemu-smoke-arm32.sh

diff --git a/automation/gitlab-ci/test.yaml b/automation/gitlab-ci/test.yaml
index ec2a2e1607..42cd725a12 100644
--- a/automation/gitlab-ci/test.yaml
+++ b/automation/gitlab-ci/test.yaml
@@ -95,6 +95,29 @@ qemu-smoke-arm64-gcc:
     - /^coverity-tested\/.*/
     - /^stable-.*/
 
+qemu-smoke-arm32-gcc:
+  stage: test
+  image: registry.gitlab.com/xen-project/xen/${CONTAINER}
+  variables:
+    CONTAINER: debian:unstable-arm64v8
+  script:
+    - ./automation/scripts/qemu-smoke-arm32.sh 2>&1 | tee qemu-smoke-arm32.log
+  dependencies:
+    - debian-unstable-gcc-arm32
+    - qemu-system-aarch64-6.0.0-arm32-export
+  artifacts:
+    paths:
+      - smoke.serial
+      - '*.log'
+    when: always
+  tags:
+    - arm64
+  except:
+    - master
+    - smoke
+    - /^coverity-tested\/.*/
+    - /^stable-.*/
+
 qemu-smoke-x86-64-gcc:
   stage: test
   image: registry.gitlab.com/xen-project/xen/${CONTAINER}
diff --git a/automation/scripts/qemu-smoke-arm32.sh b/automation/scripts/qemu-smoke-arm32.sh
new file mode 100755
index 0000000000..d554de7939
--- /dev/null
+++ b/automation/scripts/qemu-smoke-arm32.sh
@@ -0,0 +1,81 @@
+#!/bin/bash
+
+set -ex
+
+export DEBIAN_FRONTENT=noninteractive
+apt-get -qy update
+apt-get -qy install --no-install-recommends device-tree-compiler \
+                                            curl \
+                                            cpio
+
+cd binaries
+# Use the kernel from Debian
+curl --fail --silent --show-error --location --output vmlinuz http://http.us.debian.org/debian/dists/bullseye/main/installer-armhf/current/images/netboot/vmlinuz
+# Use a tiny initrd based on busybox from Alpine Linux
+curl --fail --silent --show-error --location --output initrd.tar.gz https://dl-cdn.alpinelinux.org/alpine/v3.15/releases/armhf/alpine-minirootfs-3.15.1-armhf.tar.gz
+
+mkdir rootfs
+cd rootfs
+tar xvzf ../initrd.tar.gz
+find . | cpio -H newc -o | gzip > ../initrd.gz
+cd ..
+
+kernel=`stat -L --printf="%s" vmlinuz`
+initrd=`stat -L --printf="%s" initrd.gz`
+
+# For Xen, we need a couple of more node. Dump the DT from QEMU and add them
+# XXX QEMU looks for "efi-virtio.rom" even if it is unneeded
+curl -fsSLO https://github.com/qemu/qemu/raw/v5.2.0/pc-bios/efi-virtio.rom
+./qemu-system-arm \
+   -machine virt-6.0 \
+   -machine virtualization=true \
+   -smp 4 \
+   -m 1024 \
+   -serial stdio \
+   -monitor none \
+   -display none \
+   -machine dumpdtb=virt.dtb
+
+dtc -I dtb -O dts virt.dtb > virt.dts
+
+cat >> virt.dts << EOF
+/ {
+	chosen {
+		#address-cells = <0x2>;
+		#size-cells = <0x2>;
+		stdout-path = "/pl011@9000000";
+        xen,xen-bootargs = "console=dtuart dtuart=/pl011@9000000 dom0_mem=512M bootscrub=0";
+		xen,dom0-bootargs = "console=tty0 console=hvc0 earlyprintk clk_ignore_unused root=/dev/ram0 rdinit=/bin/sh init=/bin/sh";
+		dom0 {
+			compatible = "xen,linux-zimage", "xen,multiboot-module";
+			reg = <0x0 0x1000000 0x0 $kernel>;
+		};
+        dom0-ramdisk {
+			compatible = "xen,linux-initrd", "xen,multiboot-module";
+			reg = <0x0 0x3200000 0x0 $initrd>;
+		};
+	};
+};
+EOF
+dtc -I dts -O dtb virt.dts > virt.dtb
+
+rm -f smoke.serial
+set +e
+timeout -k 1 240 \
+./qemu-system-arm \
+   -machine virt-6.0 \
+   -machine virtualization=true \
+   -smp 4 \
+   -m 1024 \
+   -serial stdio \
+   -monitor none \
+   -display none \
+   -dtb virt.dtb \
+   -no-reboot \
+   -kernel ./xen \
+   -device loader,file=./vmlinuz,addr=0x1000000 \
+   -device loader,file=./initrd.gz,addr=0x3200000 |& tee smoke.serial
+
+set -e
+(grep -q "^/ #" smoke.serial) || exit 1
+exit 0
-- 
2.25.1

Re: [PATCH v4 2/2] gitlab-ci: add an ARM32 qemu-based smoke test

[Michal Orzel]

Hi Stefano,

On 22.03.2022 21:38, Stefano Stabellini wrote:
> Add a minimal ARM32 smoke test based on qemu-system-arm, as provided by
> the test-artifacts qemu container. The minimal test simply boots Xen
> (built from previous build stages) and Dom0.
> 
> The test needs a working kernel and minimal initrd for dom0. Instead of
> building our own kernel and initrd, which would mean maintaining one or
> two more builting scripts under automation/, we borrow a kernel and
> initrd from distros.
> 
> For the kernel we pick the Debian Bullseye kernel, which has everything
> we need already built-in. However, we cannot use the Debian Bullseye
> initrd because it is 22MB and the large size causes QEMU to core dump.
> 
> Instead, use the tiny busybox-based rootfs provided by Alpine Linux,
> which is really minimal: just 2.5MB. Note that we cannot use the Alpine
> Linux kernel because that doesn't boot on Xen.
> 
> Signed-off-by: Stefano Stabellini <stefano.stabellini@xilinx.com>
> ---
> Changes in v4:
> - improve commit message
> - use Debian Bullseye kernel
> - use Alpine Linux initrd
> ---
>  automation/gitlab-ci/test.yaml         | 23 ++++++++
>  automation/scripts/qemu-smoke-arm32.sh | 81 ++++++++++++++++++++++++++
>  2 files changed, 104 insertions(+)
>  create mode 100755 automation/scripts/qemu-smoke-arm32.sh
> 
> diff --git a/automation/gitlab-ci/test.yaml b/automation/gitlab-ci/test.yaml
> index ec2a2e1607..42cd725a12 100644
> --- a/automation/gitlab-ci/test.yaml
> +++ b/automation/gitlab-ci/test.yaml
> @@ -95,6 +95,29 @@ qemu-smoke-arm64-gcc:
>      - /^coverity-tested\/.*/
>      - /^stable-.*/
>  
> +qemu-smoke-arm32-gcc:
> +  stage: test
> +  image: registry.gitlab.com/xen-project/xen/${CONTAINER}
> +  variables:
> +    CONTAINER: debian:unstable-arm64v8
> +  script:
> +    - ./automation/scripts/qemu-smoke-arm32.sh 2>&1 | tee qemu-smoke-arm32.log
> +  dependencies:
> +    - debian-unstable-gcc-arm32
> +    - qemu-system-aarch64-6.0.0-arm32-export
> +  artifacts:
> +    paths:
> +      - smoke.serial
> +      - '*.log'
> +    when: always
> +  tags:
> +    - arm64
> +  except:
> +    - master
> +    - smoke
> +    - /^coverity-tested\/.*/
> +    - /^stable-.*/
> +
>  qemu-smoke-x86-64-gcc:
>    stage: test
>    image: registry.gitlab.com/xen-project/xen/${CONTAINER}
> diff --git a/automation/scripts/qemu-smoke-arm32.sh b/automation/scripts/qemu-smoke-arm32.sh
> new file mode 100755
> index 0000000000..d554de7939
> --- /dev/null
> +++ b/automation/scripts/qemu-smoke-arm32.sh
> @@ -0,0 +1,81 @@
> +#!/bin/bash
> +
> +set -ex
> +
> +export DEBIAN_FRONTENT=noninteractive
> +apt-get -qy update
> +apt-get -qy install --no-install-recommends device-tree-compiler \
> +                                            curl \
> +                                            cpio
> +
> +cd binaries
> +# Use the kernel from Debian
> +curl --fail --silent --show-error --location --output vmlinuz http://http.us.debian.org/debian/dists/bullseye/main/installer-armhf/current/images/netboot/vmlinuz
> +# Use a tiny initrd based on busybox from Alpine Linux
> +curl --fail --silent --show-error --location --output initrd.tar.gz https://dl-cdn.alpinelinux.org/alpine/v3.15/releases/armhf/alpine-minirootfs-3.15.1-armhf.tar.gz
> +
> +mkdir rootfs
> +cd rootfs
> +tar xvzf ../initrd.tar.gz
> +find . | cpio -H newc -o | gzip > ../initrd.gz
> +cd ..
> +
> +kernel=`stat -L --printf="%s" vmlinuz`
> +initrd=`stat -L --printf="%s" initrd.gz`
> +
> +# For Xen, we need a couple of more node. Dump the DT from QEMU and add them
> +# XXX QEMU looks for "efi-virtio.rom" even if it is unneeded
> +curl -fsSLO https://github.com/qemu/qemu/raw/v5.2.0/pc-bios/efi-virtio.rom
> +./qemu-system-arm \
> +   -machine virt-6.0 \
Can't we just use "virt" as an alias to the latest virt machine available?

> +   -machine virtualization=true \
> +   -smp 4 \
> +   -m 1024 \
> +   -serial stdio \
> +   -monitor none \
> +   -display none \
> +   -machine dumpdtb=virt.dtb
> +
> +dtc -I dtb -O dts virt.dtb > virt.dts
> +
> +cat >> virt.dts << EOF
> +/ {
> +	chosen {
> +		#address-cells = <0x2>;
> +		#size-cells = <0x2>;
> +		stdout-path = "/pl011@9000000";
> +        xen,xen-bootargs = "console=dtuart dtuart=/pl011@9000000 dom0_mem=512M bootscrub=0";
> +		xen,dom0-bootargs = "console=tty0 console=hvc0 earlyprintk clk_ignore_unused root=/dev/ram0 rdinit=/bin/sh init=/bin/sh";
As you are using initrd, rdinit is the correct option.
Specyfing both rdinit and init does not make a lot of sense as the kernel won't reach init= parsing.

> +		dom0 {
> +			compatible = "xen,linux-zimage", "xen,multiboot-module";
> +			reg = <0x0 0x1000000 0x0 $kernel>;
> +		};
> +        dom0-ramdisk {
> +			compatible = "xen,linux-initrd", "xen,multiboot-module";
> +			reg = <0x0 0x3200000 0x0 $initrd>;
> +		};
> +	};
> +};
> +EOF
> +dtc -I dts -O dtb virt.dts > virt.dtb
> +
> +rm -f smoke.serial
> +set +e
> +timeout -k 1 240 \
> +./qemu-system-arm \
> +   -machine virt-6.0 \
> +   -machine virtualization=true \
> +   -smp 4 \
> +   -m 1024 \
> +   -serial stdio \
> +   -monitor none \
> +   -display none \
> +   -dtb virt.dtb \
> +   -no-reboot \
> +   -kernel ./xen \
> +   -device loader,file=./vmlinuz,addr=0x1000000 \
> +   -device loader,file=./initrd.gz,addr=0x3200000 |& tee smoke.serial
> +
> +set -e
> +(grep -q "^/ #" smoke.serial) || exit 1
> +exit 0

Cheers,
Michal

Re: [PATCH v4 2/2] gitlab-ci: add an ARM32 qemu-based smoke test

[Stefano Stabellini]

On Wed, 23 Mar 2022, Michal Orzel wrote:
> Hi Stefano,

Hi Michal,

I addressed both points below. Sorry for taking so long but the CI-loop
was blocked on ARM. Now it is running again.



> On 22.03.2022 21:38, Stefano Stabellini wrote:
> > Add a minimal ARM32 smoke test based on qemu-system-arm, as provided by
> > the test-artifacts qemu container. The minimal test simply boots Xen
> > (built from previous build stages) and Dom0.
> > 
> > The test needs a working kernel and minimal initrd for dom0. Instead of
> > building our own kernel and initrd, which would mean maintaining one or
> > two more builting scripts under automation/, we borrow a kernel and
> > initrd from distros.
> > 
> > For the kernel we pick the Debian Bullseye kernel, which has everything
> > we need already built-in. However, we cannot use the Debian Bullseye
> > initrd because it is 22MB and the large size causes QEMU to core dump.
> > 
> > Instead, use the tiny busybox-based rootfs provided by Alpine Linux,
> > which is really minimal: just 2.5MB. Note that we cannot use the Alpine
> > Linux kernel because that doesn't boot on Xen.
> > 
> > Signed-off-by: Stefano Stabellini <stefano.stabellini@xilinx.com>
> > ---
> > Changes in v4:
> > - improve commit message
> > - use Debian Bullseye kernel
> > - use Alpine Linux initrd
> > ---
> >  automation/gitlab-ci/test.yaml         | 23 ++++++++
> >  automation/scripts/qemu-smoke-arm32.sh | 81 ++++++++++++++++++++++++++
> >  2 files changed, 104 insertions(+)
> >  create mode 100755 automation/scripts/qemu-smoke-arm32.sh
> > 
> > diff --git a/automation/gitlab-ci/test.yaml b/automation/gitlab-ci/test.yaml
> > index ec2a2e1607..42cd725a12 100644
> > --- a/automation/gitlab-ci/test.yaml
> > +++ b/automation/gitlab-ci/test.yaml
> > @@ -95,6 +95,29 @@ qemu-smoke-arm64-gcc:
> >      - /^coverity-tested\/.*/
> >      - /^stable-.*/
> >  
> > +qemu-smoke-arm32-gcc:
> > +  stage: test
> > +  image: registry.gitlab.com/xen-project/xen/${CONTAINER}
> > +  variables:
> > +    CONTAINER: debian:unstable-arm64v8
> > +  script:
> > +    - ./automation/scripts/qemu-smoke-arm32.sh 2>&1 | tee qemu-smoke-arm32.log
> > +  dependencies:
> > +    - debian-unstable-gcc-arm32
> > +    - qemu-system-aarch64-6.0.0-arm32-export
> > +  artifacts:
> > +    paths:
> > +      - smoke.serial
> > +      - '*.log'
> > +    when: always
> > +  tags:
> > +    - arm64
> > +  except:
> > +    - master
> > +    - smoke
> > +    - /^coverity-tested\/.*/
> > +    - /^stable-.*/
> > +
> >  qemu-smoke-x86-64-gcc:
> >    stage: test
> >    image: registry.gitlab.com/xen-project/xen/${CONTAINER}
> > diff --git a/automation/scripts/qemu-smoke-arm32.sh b/automation/scripts/qemu-smoke-arm32.sh
> > new file mode 100755
> > index 0000000000..d554de7939
> > --- /dev/null
> > +++ b/automation/scripts/qemu-smoke-arm32.sh
> > @@ -0,0 +1,81 @@
> > +#!/bin/bash
> > +
> > +set -ex
> > +
> > +export DEBIAN_FRONTENT=noninteractive
> > +apt-get -qy update
> > +apt-get -qy install --no-install-recommends device-tree-compiler \
> > +                                            curl \
> > +                                            cpio
> > +
> > +cd binaries
> > +# Use the kernel from Debian
> > +curl --fail --silent --show-error --location --output vmlinuz http://http.us.debian.org/debian/dists/bullseye/main/installer-armhf/current/images/netboot/vmlinuz
> > +# Use a tiny initrd based on busybox from Alpine Linux
> > +curl --fail --silent --show-error --location --output initrd.tar.gz https://dl-cdn.alpinelinux.org/alpine/v3.15/releases/armhf/alpine-minirootfs-3.15.1-armhf.tar.gz
> > +
> > +mkdir rootfs
> > +cd rootfs
> > +tar xvzf ../initrd.tar.gz
> > +find . | cpio -H newc -o | gzip > ../initrd.gz
> > +cd ..
> > +
> > +kernel=`stat -L --printf="%s" vmlinuz`
> > +initrd=`stat -L --printf="%s" initrd.gz`
> > +
> > +# For Xen, we need a couple of more node. Dump the DT from QEMU and add them
> > +# XXX QEMU looks for "efi-virtio.rom" even if it is unneeded
> > +curl -fsSLO https://github.com/qemu/qemu/raw/v5.2.0/pc-bios/efi-virtio.rom
> > +./qemu-system-arm \
> > +   -machine virt-6.0 \
> Can't we just use "virt" as an alias to the latest virt machine available?
> 
> > +   -machine virtualization=true \
> > +   -smp 4 \
> > +   -m 1024 \
> > +   -serial stdio \
> > +   -monitor none \
> > +   -display none \
> > +   -machine dumpdtb=virt.dtb
> > +
> > +dtc -I dtb -O dts virt.dtb > virt.dts
> > +
> > +cat >> virt.dts << EOF
> > +/ {
> > +	chosen {
> > +		#address-cells = <0x2>;
> > +		#size-cells = <0x2>;
> > +		stdout-path = "/pl011@9000000";
> > +        xen,xen-bootargs = "console=dtuart dtuart=/pl011@9000000 dom0_mem=512M bootscrub=0";
> > +		xen,dom0-bootargs = "console=tty0 console=hvc0 earlyprintk clk_ignore_unused root=/dev/ram0 rdinit=/bin/sh init=/bin/sh";
> As you are using initrd, rdinit is the correct option.
> Specyfing both rdinit and init does not make a lot of sense as the kernel won't reach init= parsing.
> 
> > +		dom0 {
> > +			compatible = "xen,linux-zimage", "xen,multiboot-module";
> > +			reg = <0x0 0x1000000 0x0 $kernel>;
> > +		};
> > +        dom0-ramdisk {
> > +			compatible = "xen,linux-initrd", "xen,multiboot-module";
> > +			reg = <0x0 0x3200000 0x0 $initrd>;
> > +		};
> > +	};
> > +};
> > +EOF
> > +dtc -I dts -O dtb virt.dts > virt.dtb
> > +
> > +rm -f smoke.serial
> > +set +e
> > +timeout -k 1 240 \
> > +./qemu-system-arm \
> > +   -machine virt-6.0 \
> > +   -machine virtualization=true \
> > +   -smp 4 \
> > +   -m 1024 \
> > +   -serial stdio \
> > +   -monitor none \
> > +   -display none \
> > +   -dtb virt.dtb \
> > +   -no-reboot \
> > +   -kernel ./xen \
> > +   -device loader,file=./vmlinuz,addr=0x1000000 \
> > +   -device loader,file=./initrd.gz,addr=0x3200000 |& tee smoke.serial
> > +
> > +set -e
> > +(grep -q "^/ #" smoke.serial) || exit 1
> > +exit 0
> 
> Cheers,
> Michal
>