[PATCH] detect AWS arm virtual instance as kvm

[Daniel P. Berrangé]

On Wed, May 25, 2022 at 02:34:53PM +0800, Frank Liang wrote:
> Hello,
> 
> aws arm virtual instances are running on top of Nitro hypervisor(KVM-based
> hypervisor).
> I am proposing this patch to keep virt-what output consistent with x86
> virtual instances.
> Please review it. Thanks
> 
> With this patch:
> $ sudo virt-what
> kvm
> aws
> $ cat /sys/devices/virtual/dmi/id/product_name
> t4g.small
> 
> Without it:
> $ sudo virt-what
> aws
> 
> Here is the test pass log with this patch.
> # cat test-suite.log
> ======================================================
>    virt-what 1.22: tests/aws-kvm-arm/test-suite.log
> ======================================================
> 
> # TOTAL: 1
> # PASS:  1
> # SKIP:  0
> # XFAIL: 0
> # FAIL:  0
> # XPASS: 0
> # ERROR: 0
> 
> .. contents:: :depth: 2
> 
> Rgs,
> Frank

> From 931e5f24b9e7e6e61cebe3213166bd691df80db0 Mon Sep 17 00:00:00 2001
> From: Xiao Liang <xiliang at redhat.com>
> Date: Tue, 24 May 2022 17:34:52 +0800
> Subject: [PATCH] detect AWS arm virtual instance as kvm
> 
> AWS arm virtual instance is KVM based hypervisor.
> With this patch:
> $ sudo virt-what
> kvm
> aws
> $ cat /sys/devices/virtual/dmi/id/product_name
> t4g.small
> 
> Without it:
> $ sudo virt-what
> aws
> 
> Signed-off-by: Xiao Liang <xiliang at redhat.com>
> ---
>  tests/aws-kvm-arm/test.sh | 3 ++-
>  virt-what.in              | 5 +++++
>  2 files changed, 7 insertions(+), 1 deletion(-)
> 
> diff --git a/tests/aws-kvm-arm/test.sh b/tests/aws-kvm-arm/test.sh
> index 5d31995..d469a99 100755
> --- a/tests/aws-kvm-arm/test.sh
> +++ b/tests/aws-kvm-arm/test.sh
> @@ -18,7 +18,8 @@
>  output="$(PATH=../..:$PATH virt-what --test-root=. 2>&1)"
>  # XXX At the moment KVM cannot be detected on this platform.
>  # We hope to fix that, but for now the only fact printed is "aws".

This comment looks outdated given the change you made

> -expected="aws"
> +expected="kvm
> +aws"
>  
>  if [ "$output" != "$expected" ]; then
>      echo "$0: test failed because output did not match expected"
> diff --git a/virt-what.in b/virt-what.in
> index b59714e..9afbd40 100644
> --- a/virt-what.in
> +++ b/virt-what.in
> @@ -339,6 +339,11 @@ if ! "$skip_qemu_kvm"; then
>              echo qemu
>              skip_lkvm=true
>          fi
> +        if echo "$dmi" | grep -q 'Amazon EC2' &&
> +            echo "$dmi" | grep -q 'System is a virtual machine'; then
> +            echo kvm
> +            skip_lkvm=true
> +        fi
>      elif [ -d ${root}/proc/device-tree/hypervisor ] &&
>           grep -q "linux,kvm" /proc/device-tree/hypervisor/compatible; then
>          # We are running as a spapr KVM guest on ppc64
> -- 
> 2.36.1
> 


With regards,
Daniel
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